KeyGeneration2 (#34)

Real P-256 key generation and handling in the Keystore

Reviewed-on: #34

.gitignore

@@ -181,4 +181,6 @@ app.*.symbols
 !**/ios/**/default.perspectivev3
 !/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
 !/dev/ci/**/Gemfile.lock
-!.vscode/settings.json
+!.vscode/settings.json
+dialer/android/gradle.properties
+.gitignore

dialer/android/app/src/main/kotlin/com/icing/dialer/KeyDeleter.kt

@@ -0,0 +1,28 @@
+package com.icing.dialer
+
+import java.security.KeyStore
+
+object KeyDeleterHelper {
+
+    private const val ANDROID_KEYSTORE = "AndroidKeyStore"
+
+    /**
+     * Deletes the key pair associated with the given alias from the Android Keystore.
+     *
+     * @param alias The alias of the key pair to delete.
+     * @throws Exception if deletion fails.
+     */
+    fun deleteKeyPair(alias: String) {
+        try {
+            val keyStore = KeyStore.getInstance(ANDROID_KEYSTORE).apply { load(null) }
+
+            if (!keyStore.containsAlias(alias)) {
+                throw Exception("No key found with alias \"$alias\" to delete.")
+            }
+
+            keyStore.deleteEntry(alias)
+        } catch (e: Exception) {
+            throw Exception("Failed to delete key pair: ${e.message}", e)
+        }
+    }
+}

dialer/android/app/src/main/kotlin/com/icing/dialer/KeyGenerator.kt

@@ -0,0 +1,47 @@
+package com.icing.dialer
+
+import android.security.keystore.KeyGenParameterSpec
+import android.security.keystore.KeyProperties
+import java.security.KeyPairGenerator
+import java.security.KeyStore
+
+object KeyGeneratorHelper {
+
+    private const val ANDROID_KEYSTORE = "AndroidKeyStore"
+
+    /**
+     * Generates an ECDSA P-256 key pair and stores it in the Android Keystore.
+     *
+     * @param alias Unique identifier for the key pair.
+     * @throws Exception if key generation fails.
+     */
+    fun generateECKeyPair(alias: String) {
+        try {
+            val keyStore = KeyStore.getInstance(ANDROID_KEYSTORE).apply { load(null) }
+
+            // Check if the key already exists
+            if (keyStore.containsAlias(alias)) {
+                throw Exception("Key with alias \"$alias\" already exists.")
+            }
+
+            val keyPairGenerator = KeyPairGenerator.getInstance(
+                KeyProperties.KEY_ALGORITHM_EC,
+                ANDROID_KEYSTORE
+            )
+
+            val parameterSpec = KeyGenParameterSpec.Builder(
+                alias,
+                KeyProperties.PURPOSE_SIGN or KeyProperties.PURPOSE_VERIFY
+            )
+                .setAlgorithmParameterSpec(java.security.spec.ECGenParameterSpec("secp256r1"))
+                .setDigests(KeyProperties.DIGEST_SHA256, KeyProperties.DIGEST_SHA384, KeyProperties.DIGEST_SHA512)
+                .setUserAuthenticationRequired(false) // Set to true if you require user authentication
+                .build()
+
+            keyPairGenerator.initialize(parameterSpec)
+            keyPairGenerator.generateKeyPair()
+        } catch (e: Exception) {
+            throw Exception("Failed to generate EC key pair: ${e.message}", e)
+        }
+    }
+}

dialer/android/app/src/main/kotlin/com/icing/dialer/KeystoreHelper.kt

@@ -0,0 +1,154 @@
+package com.icing.dialer
+
+import java.security.PrivateKey
+import android.security.keystore.KeyGenParameterSpec
+import android.security.keystore.KeyProperties
+import android.util.Base64
+import io.flutter.plugin.common.MethodCall
+import io.flutter.plugin.common.MethodChannel
+import java.security.KeyPairGenerator
+import java.security.KeyStore
+import java.security.Signature
+
+class KeystoreHelper(private val call: MethodCall, private val result: MethodChannel.Result) {
+
+    private val ANDROID_KEYSTORE = "AndroidKeyStore"
+
+    fun handleMethodCall() {
+        when (call.method) {
+            "generateKeyPair" -> generateECKeyPair()
+            "signData" -> signData()
+            "getPublicKey" -> getPublicKey()
+            "deleteKeyPair" -> deleteKeyPair()
+            "keyPairExists" -> keyPairExists()
+            else -> result.notImplemented()
+        }
+    }
+
+    private fun generateECKeyPair() {
+        val alias = call.argument<String>("alias")
+        if (alias == null) {
+            result.error("INVALID_ARGUMENT", "Alias is required", null)
+            return
+        }
+
+        try {
+            val keyStore = KeyStore.getInstance(ANDROID_KEYSTORE).apply { load(null) }
+
+            if (keyStore.containsAlias(alias)) {
+                result.error("KEY_EXISTS", "Key with alias \"$alias\" already exists.", null)
+                return
+            }
+
+            val keyPairGenerator = KeyPairGenerator.getInstance(
+                KeyProperties.KEY_ALGORITHM_EC,
+                ANDROID_KEYSTORE
+            )
+
+            val parameterSpec = KeyGenParameterSpec.Builder(
+                alias,
+                KeyProperties.PURPOSE_SIGN or KeyProperties.PURPOSE_VERIFY
+            )
+                .setAlgorithmParameterSpec(java.security.spec.ECGenParameterSpec("secp256r1"))
+                .setDigests(KeyProperties.DIGEST_SHA256, KeyProperties.DIGEST_SHA384, KeyProperties.DIGEST_SHA512)
+                .setUserAuthenticationRequired(false)
+                .build()
+
+            keyPairGenerator.initialize(parameterSpec)
+            keyPairGenerator.generateKeyPair()
+
+            result.success(null)
+        } catch (e: Exception) {
+            result.error("KEY_GENERATION_FAILED", e.message, null)
+        }
+    }
+
+    private fun signData() {
+        val alias = call.argument<String>("alias")
+        val data = call.argument<String>("data")
+        if (alias == null || data == null) {
+            result.error("INVALID_ARGUMENT", "Alias and data are required", null)
+            return
+        }
+
+        try {
+            val keyStore = KeyStore.getInstance(ANDROID_KEYSTORE).apply { load(null) }
+
+            val privateKey = keyStore.getKey(alias, null) as? PrivateKey ?: run {
+                result.error("KEY_NOT_FOUND", "Private key not found for alias \"$alias\".", null)
+                return
+            }
+
+            val signature = Signature.getInstance("SHA256withECDSA")
+            signature.initSign(privateKey)
+            signature.update(data.toByteArray())
+            val signedBytes = signature.sign()
+
+            val signatureBase64 = Base64.encodeToString(signedBytes, Base64.DEFAULT)
+            result.success(signatureBase64)
+        } catch (e: Exception) {
+            result.error("SIGNING_FAILED", e.message, null)
+        }
+    }
+
+    private fun getPublicKey() {
+        val alias = call.argument<String>("alias")
+        if (alias == null) {
+            result.error("INVALID_ARGUMENT", "Alias is required", null)
+            return
+        }
+
+        try {
+            val keyStore = KeyStore.getInstance(ANDROID_KEYSTORE).apply { load(null) }
+
+            val certificate = keyStore.getCertificate(alias) ?: run {
+                result.error("CERTIFICATE_NOT_FOUND", "Certificate not found for alias \"$alias\".", null)
+                return
+            }
+
+            val publicKey = certificate.publicKey
+            val publicKeyBase64 = Base64.encodeToString(publicKey.encoded, Base64.DEFAULT)
+            result.success(publicKeyBase64)
+        } catch (e: Exception) {
+            result.error("PUBLIC_KEY_RETRIEVAL_FAILED", e.message, null)
+        }
+    }
+
+    private fun deleteKeyPair() {
+        val alias = call.argument<String>("alias")
+        if (alias == null) {
+            result.error("INVALID_ARGUMENT", "Alias is required", null)
+            return
+        }
+
+        try {
+            val keyStore = KeyStore.getInstance(ANDROID_KEYSTORE).apply { load(null) }
+
+            if (!keyStore.containsAlias(alias)) {
+                result.error("KEY_NOT_FOUND", "No key found with alias \"$alias\" to delete.", null)
+                return
+            }
+
+            keyStore.deleteEntry(alias)
+            result.success(null)
+        } catch (e: Exception) {
+            result.error("KEY_DELETION_FAILED", e.message, null)
+        }
+    }
+
+    private fun keyPairExists() {
+        val alias = call.argument<String>("alias")
+        if (alias == null) {
+            result.error("INVALID_ARGUMENT", "Alias is required", null)
+            return
+        }
+
+        try {
+            val keyStore = KeyStore.getInstance(ANDROID_KEYSTORE).apply { load(null) }
+            val exists = keyStore.containsAlias(alias)
+            result.success(exists)
+        } catch (e: Exception) {
+            result.error("KEY_CHECK_FAILED", e.message, null)
+        }
+    }
+}

dialer/android/app/src/main/kotlin/com/icing/dialer/MainActivity.kt

@@ -1,5 +1,19 @@
 package com.icing.dialer
 
+import android.os.Bundle
 import io.flutter.embedding.android.FlutterActivity
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.plugin.common.MethodChannel
+import com.icing.dialer.KeystoreHelper
 
-class MainActivity: FlutterActivity()
+class MainActivity: FlutterActivity() {
+    private val CHANNEL = "com.example.keystore"
+
+    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
+        super.configureFlutterEngine(flutterEngine)
+        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL).setMethodCallHandler { call, result ->
+            // Delegate method calls to KeystoreHelper
+            KeystoreHelper(call, result).handleMethodCall()
+        }
+    }
+}

dialer/android/app/src/main/kotlin/com/icing/dialer/PublicKeyRetriever.kt

@@ -0,0 +1,30 @@
+package com.icing.dialer
+
+import java.security.KeyStore
+import java.security.PublicKey
+import android.util.Base64
+
+object PublicKeyHelper {
+
+    private const val ANDROID_KEYSTORE = "AndroidKeyStore"
+
+    /**
+     * Retrieves the public key associated with the given alias.
+     *
+     * @param alias The alias of the key pair.
+     * @return The public key as a Base64-encoded string.
+     * @throws Exception if retrieval fails.
+     */
+    fun getPublicKey(alias: String): String {
+        try {
+            val keyStore = KeyStore.getInstance(ANDROID_KEYSTORE).apply { load(null) }
+
+            val certificate = keyStore.getCertificate(alias) ?: throw Exception("Certificate not found for alias \"$alias\".")
+            val publicKey: PublicKey = certificate.publicKey
+
+            return Base64.encodeToString(publicKey.encoded, Base64.DEFAULT)
+        } catch (e: Exception) {
+            throw Exception("Failed to retrieve public key: ${e.message}", e)
+        }
+    }
+}

dialer/android/app/src/main/kotlin/com/icing/dialer/Signer.kt

@@ -0,0 +1,37 @@
+package com.icing.dialer
+
+import android.security.keystore.KeyProperties
+import java.security.KeyStore
+import java.security.Signature
+import android.util.Base64
+import java.security.PrivateKey
+
+object SignerHelper {
+
+    private const val ANDROID_KEYSTORE = "AndroidKeyStore"
+
+    /**
+     * Signs the provided data using the private key associated with the given alias.
+     *
+     * @param alias The alias of the key pair.
+     * @param data The data to sign.
+     * @return The signature as a Base64-encoded string.
+     * @throws Exception if signing fails.
+     */
+    fun signData(alias: String, data: ByteArray): String {
+        try {
+            val keyStore = KeyStore.getInstance(ANDROID_KEYSTORE).apply { load(null) }
+
+            val privateKey = keyStore.getKey(alias, null) as? PrivateKey?: throw Exception("Private key not found for alias \"$alias\".")
+
+            val signature = Signature.getInstance("SHA256withECDSA")
+            signature.initSign(privateKey)
+            signature.update(data)
+            val signedBytes = signature.sign()
+
+            return Base64.encodeToString(signedBytes, Base64.DEFAULT)
+        } catch (e: Exception) {
+            throw Exception("Failed to sign data: ${e.message}", e)
+        }
+    }
+}

dialer/android/gradle.properties

@@ -2,3 +2,4 @@ org.gradle.jvmargs=-Xmx4G -XX:MaxMetaspaceSize=2G -XX:+HeapDumpOnOutOfMemoryErro
 android.useAndroidX=true
 android.enableJetifier=true
 dev.steenbakker.mobile_scanner.useUnbundled=true
+org.gradle.java.home=/usr/lib/jvm/java-17-openjdk-amd64

dialer/devtools_options.yaml

@@ -0,0 +1,3 @@
+description: This file stores settings for Dart & Flutter DevTools.
+documentation: https://docs.flutter.dev/tools/devtools/extensions#configure-extension-enablement-states
+extensions:

dialer/lib/features/settings/cryptography/key_management.dart

@@ -0,0 +1,145 @@
+import 'package:flutter/material.dart';
+import 'package:dialer/services/cryptography/asymmetric_crypto_service.dart';
+
+class ManageKeysPage extends StatefulWidget {
+  const ManageKeysPage({Key? key}) : super(key: key);
+
+  @override
+  _ManageKeysPageState createState() => _ManageKeysPageState();
+}
+
+class _ManageKeysPageState extends State<ManageKeysPage> {
+  final AsymmetricCryptoService _cryptoService = AsymmetricCryptoService();
+  List<Map<String, dynamic>> _keys = [];
+  bool _isLoading = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _loadKeys();
+  }
+
+  Future<void> _loadKeys() async {
+    setState(() {
+      _isLoading = true;
+    });
+    try {
+      List<Map<String, dynamic>> keys = await _cryptoService.getAllKeys();
+      setState(() {
+        _keys = keys;
+      });
+    } catch (e) {
+      ScaffoldMessenger.of(context)
+          .showSnackBar(SnackBar(content: Text('Error loading keys: $e')));
+    } finally {
+      setState(() {
+        _isLoading = false;
+      });
+    }
+  }
+
+  Future<void> _generateKey() async {
+    setState(() {
+      _isLoading = true;
+    });
+    try {
+      await _cryptoService.generateKeyPair();
+      await _loadKeys();
+      ScaffoldMessenger.of(context)
+          .showSnackBar(const SnackBar(content: Text('Key generated successfully')));
+    } catch (e) {
+      ScaffoldMessenger.of(context)
+          .showSnackBar(SnackBar(content: Text('Error generating key: $e')));
+    } finally {
+      setState(() {
+        _isLoading = false;
+      });
+    }
+  }
+
+  Future<void> _deleteKey(String alias) async {
+    setState(() {
+      _isLoading = true;
+    });
+    try {
+      await _cryptoService.deleteKeyPair(alias);
+      await _loadKeys();
+      ScaffoldMessenger.of(context)
+          .showSnackBar(const SnackBar(content: Text('Key deleted successfully')));
+    } catch (e) {
+      ScaffoldMessenger.of(context)
+          .showSnackBar(SnackBar(content: Text('Error deleting key: $e')));
+    } finally {
+      setState(() {
+        _isLoading = false;
+      });
+    }
+  }
+
+  Future<void> _viewPublicKey(String alias) async {
+    try {
+      final publicKey = await _cryptoService.getPublicKey(alias);
+      showDialog(
+        context: context,
+        builder: (_) => AlertDialog(
+          title: const Text('Public Key'),
+          content: SingleChildScrollView(child: Text(publicKey)),
+          actions: [
+            TextButton(
+              child: const Text('Close'),
+              onPressed: () {
+                Navigator.pop(context);
+              },
+            )
+          ],
+        ),
+      );
+    } catch (e) {
+      ScaffoldMessenger.of(context)
+          .showSnackBar(SnackBar(content: Text('Error retrieving public key: $e')));
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('Manage Keys'),
+      ),
+      body: _isLoading
+          ? const Center(child: CircularProgressIndicator())
+          : _keys.isEmpty
+              ? const Center(child: Text('No keys found'))
+              : ListView.builder(
+                  itemCount: _keys.length,
+                  itemBuilder: (context, index) {
+                    final keyData = _keys[index];
+                    return ListTile(
+                      title: Text(keyData['label'] ?? 'No label'),
+                      subtitle: Text(keyData['alias'] ?? ''),
+                      trailing: Row(
+                        mainAxisSize: MainAxisSize.min,
+                        children: [
+                          IconButton(
+                            icon: const Icon(Icons.visibility),
+                            tooltip: 'View Public Key',
+                            onPressed: () => _viewPublicKey(keyData['alias']),
+                          ),
+                          IconButton(
+                            icon: const Icon(Icons.delete),
+                            tooltip: 'Delete Key',
+                            onPressed: () => _deleteKey(keyData['alias']),
+                          ),
+                        ],
+                      ),
+                    );
+                  },
+                ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: _generateKey,
+        child: const Icon(Icons.add),
+        tooltip: 'Generate New Key',
+      ),
+    );
+  }
+}

dialer/lib/features/settings/key/delete_key_pair.dart

@@ -1,65 +0,0 @@
-import 'package:flutter/material.dart';
-import 'key_storage.dart';
-
-class DeleteKeyPairPage extends StatelessWidget {
-  const DeleteKeyPairPage({super.key});
-
-  Future<void> _deleteKeyPair(BuildContext context) async {
-    final keyStorage = KeyStorage();
-    await keyStorage.deleteKeys();
-
-    ScaffoldMessenger.of(context).showSnackBar(
-      const SnackBar(
-        content: Text('The key pair has been deleted.'),
-      ),
-    );
-
-    Navigator.pop(context);
-  }
-
-  void _showConfirmationDialog(BuildContext context) {
-    showDialog(
-      context: context,
-      builder: (BuildContext context) {
-        return AlertDialog(
-          title: const Text('Confirm Deletion'),
-          content: const Text(
-              'Are you sure you want to delete the key pair? This action is irreversible.'),
-          actions: [
-            TextButton(
-              child: const Text('Cancel'),
-              onPressed: () {
-                Navigator.of(context).pop();
-              },
-            ),
-            TextButton(
-              child: const Text('Delete'),
-              onPressed: () {
-                Navigator.of(context).pop();
-                _deleteKeyPair(context);
-              },
-            ),
-          ],
-        );
-      },
-    );
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: Colors.black,
-      appBar: AppBar(
-        title: const Text('Delete a Key Pair'),
-      ),
-      body: Center(
-        child: ElevatedButton(
-          onPressed: () {
-            _showConfirmationDialog(context);
-          },
-          child: const Text('Delete Key Pair'),
-        ),
-      ),
-    );
-  }
-}

dialer/lib/features/settings/key/export_private_key.dart

@@ -1,138 +0,0 @@
-import 'package:flutter/material.dart';
-import 'dart:typed_data';
-import 'dart:convert';
-import 'package:pointycastle/export.dart' as crypto;
-import 'package:file_picker/file_picker.dart';
-import 'dart:io';
-import 'key_storage.dart';
-
-class ExportPrivateKeyPage extends StatefulWidget {
-  const ExportPrivateKeyPage({super.key});
-
-  @override
-  _ExportPrivateKeyPageState createState() => _ExportPrivateKeyPageState();
-}
-
-class _ExportPrivateKeyPageState extends State<ExportPrivateKeyPage> {
-  final TextEditingController _passwordController = TextEditingController();
-
-  Future<void> _exportPrivateKey() async {
-    final keyStorage = KeyStorage();
-    final privateKeyPem = await keyStorage.getPrivateKey();
-
-    if (privateKeyPem == null) {
-      // Show error message if there's no key
-      ScaffoldMessenger.of(context).showSnackBar(
-        const SnackBar(
-          content: Text('No private key found to export.'),
-        ),
-      );
-      return;
-    }
-
-    final password = _passwordController.text;
-    if (password.isEmpty) {
-      ScaffoldMessenger.of(context).showSnackBar(
-        const SnackBar(
-          content: Text('Please enter a password.'),
-        ),
-      );
-      return;
-    }
-
-    final encryptedData = _encryptPrivateKey(privateKeyPem, password);
-
-    final outputFile = await FilePicker.platform.saveFile(
-      dialogTitle: 'Save encrypted private key',
-      fileName: 'private_key_encrypted.aes',
-    );
-
-    if (outputFile != null) {
-      try {
-        final file = File(outputFile);
-        await file.writeAsBytes(encryptedData);
-
-        showDialog(
-          context: context,
-          builder: (context) => AlertDialog(
-            title: const Text('Key Exported'),
-            content: const Text('The encrypted private key has been exported successfully.'),
-            actions: [
-              TextButton(
-                onPressed: () => Navigator.pop(context),
-                child: const Text('OK'),
-              ),
-            ],
-          ),
-        );
-      } catch (e) {
-        ScaffoldMessenger.of(context).showSnackBar(
-          SnackBar(
-            content: Text('Failed to write file: $e'),
-          ),
-        );
-      }
-    }
-  }
-
-  Uint8List _encryptPrivateKey(String privateKey, String password) {
-    // Derive a key from the password using PBKDF2
-    final derivator = crypto.PBKDF2KeyDerivator(
-      crypto.HMac(crypto.SHA256Digest(), 64),
-    );
-
-    final salt = Uint8List.fromList(utf8.encode('some_salt')); // In production, use a random salt and store it securely
-    derivator.init(crypto.Pbkdf2Parameters(salt, 1000, 32));
-    final key = derivator.process(Uint8List.fromList(utf8.encode(password)));
-
-    // Initialize AES-CBC cipher with PKCS7 padding
-    final iv = Uint8List(16); // zero IV for example, in production use random IV and store it
-    final params = crypto.PaddedBlockCipherParameters<crypto.ParametersWithIV<crypto.KeyParameter>, Null>(
-      crypto.ParametersWithIV<crypto.KeyParameter>(crypto.KeyParameter(key), iv),
-      null,
-    );
-
-    final cipher = crypto.PaddedBlockCipher('AES/CBC/PKCS7');
-    cipher.init(true, params);
-
-    final input = Uint8List.fromList(utf8.encode(privateKey));
-    final output = cipher.process(input);
-
-    return output;
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: Colors.black,
-      appBar: AppBar(
-        title: const Text('Export Private Key'),
-      ),
-      body: Padding(
-        padding: const EdgeInsets.all(16.0),
-        child: Column(
-          children: [
-            const Text(
-              'Enter a password to encrypt the private key:',
-              style: TextStyle(color: Colors.white),
-            ),
-            TextField(
-              controller: _passwordController,
-              obscureText: true,
-              style: const TextStyle(color: Colors.white),
-              decoration: const InputDecoration(
-                hintText: 'Password',
-                hintStyle: TextStyle(color: Colors.grey),
-              ),
-            ),
-            const SizedBox(height: 20),
-            ElevatedButton(
-              onPressed: _exportPrivateKey,
-              child: const Text('Export Encrypted Private Key'),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-}

dialer/lib/features/settings/key/generate_new_key_pair.dart

@@ -1,122 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:pointycastle/export.dart' as crypto;
-import 'dart:math';
-import 'dart:convert';
-import 'dart:typed_data';
-import 'package:asn1lib/asn1lib.dart';
-import 'key_storage.dart';
-
-class GenerateNewKeyPairPage extends StatelessWidget {
-  const GenerateNewKeyPairPage({super.key});
-
-  Future<Map<String, String>> _generateKeyPair() async {
-    final keyParams = crypto.RSAKeyGeneratorParameters(
-      BigInt.parse('65537'),
-      2048,
-      64,
-    );
-
-    final secureRandom = crypto.FortunaRandom();
-    final random = Random.secure();
-    final seeds = List<int>.generate(32, (_) => random.nextInt(256));
-    secureRandom.seed(crypto.KeyParameter(Uint8List.fromList(seeds)));
-
-    final rngParams = crypto.ParametersWithRandom(keyParams, secureRandom);
-    final keyGenerator = crypto.RSAKeyGenerator();
-    keyGenerator.init(rngParams);
-
-    final pair = keyGenerator.generateKeyPair();
-    final publicKey = pair.publicKey as crypto.RSAPublicKey;
-    final privateKey = pair.privateKey as crypto.RSAPrivateKey;
-
-    final publicKeyPem = _encodePublicKeyToPemPKCS1(publicKey);
-    final privateKeyPem = _encodePrivateKeyToPemPKCS1(privateKey);
-
-    // Save keys securely
-    final keyStorage = KeyStorage();
-    await keyStorage.saveKeys(publicKey: publicKeyPem, privateKey: privateKeyPem);
-
-    return {'publicKey': publicKeyPem, 'privateKey': privateKeyPem};
-  }
-
-  String _encodePublicKeyToPemPKCS1(crypto.RSAPublicKey publicKey) {
-    final bytes = _encodePublicKeyToDer(publicKey);
-    return _formatPem(bytes, 'RSA PUBLIC KEY');
-  }
-
-  String _encodePrivateKeyToPemPKCS1(crypto.RSAPrivateKey privateKey) {
-    final bytes = _encodePrivateKeyToDer(privateKey);
-    return _formatPem(bytes, 'RSA PRIVATE KEY');
-  }
-
-  Uint8List _encodePublicKeyToDer(crypto.RSAPublicKey publicKey) {
-    final algorithmSeq = ASN1Sequence();
-    // Create the OID directly with the arcs
-    algorithmSeq.add(ASN1ObjectIdentifier([1, 2, 840, 113549, 1, 1, 1]));
-    algorithmSeq.add(ASN1Null());
-
-    final publicKeySeq = ASN1Sequence();
-    publicKeySeq.add(ASN1Integer(publicKey.modulus!));
-    publicKeySeq.add(ASN1Integer(publicKey.exponent!));
-
-    final publicKeyBitString = ASN1BitString(Uint8List.fromList(publicKeySeq.encodedBytes));
-
-    final topLevelSeq = ASN1Sequence();
-    topLevelSeq.add(algorithmSeq);
-    topLevelSeq.add(publicKeyBitString);
-
-    return Uint8List.fromList(topLevelSeq.encodedBytes);
-  }
-
-  Uint8List _encodePrivateKeyToDer(crypto.RSAPrivateKey privateKey) {
-    final privateKeySeq = ASN1Sequence();
-    privateKeySeq.add(ASN1Integer(BigInt.from(0))); // Version
-    privateKeySeq.add(ASN1Integer(privateKey.n!));
-    privateKeySeq.add(ASN1Integer(privateKey.exponent!));
-    privateKeySeq.add(ASN1Integer(privateKey.d!));
-    privateKeySeq.add(ASN1Integer(privateKey.p!));
-    privateKeySeq.add(ASN1Integer(privateKey.q!));
-    privateKeySeq.add(ASN1Integer(privateKey.d! % (privateKey.p! - BigInt.one)));
-    privateKeySeq.add(ASN1Integer(privateKey.d! % (privateKey.q! - BigInt.one)));
-    privateKeySeq.add(ASN1Integer(privateKey.q!.modInverse(privateKey.p!)));
-
-    return Uint8List.fromList(privateKeySeq.encodedBytes);
-  }
-
-  String _formatPem(Uint8List bytes, String label) {
-    final base64Data = base64Encode(bytes);
-    final chunks = RegExp('.{1,64}').allMatches(base64Data).map((m) => m.group(0)!);
-    return '-----BEGIN $label-----\n${chunks.join('\n')}\n-----END $label-----';
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: Colors.black,
-      appBar: AppBar(
-        title: const Text('Generate a New Key Pair'),
-      ),
-      body: Center(
-        child: ElevatedButton(
-          onPressed: () async {
-            await _generateKeyPair();
-            showDialog(
-              context: context,
-              builder: (context) => AlertDialog(
-                title: const Text('Keys Generated'),
-                content: const Text('The new key pair has been generated and stored securely.'),
-                actions: [
-                  TextButton(
-                    onPressed: () => Navigator.pop(context),
-                    child: const Text('OK'),
-                  ),
-                ],
-              ),
-            );
-          },
-          child: const Text('Generate a New Key Pair'),
-        ),
-      ),
-    );
-  }
-}

dialer/lib/features/settings/key/key_storage.dart

@@ -1,28 +0,0 @@
-// key_storage.dart
-
-import 'package:flutter_secure_storage/flutter_secure_storage.dart';
-
-class KeyStorage {
-  static const _publicKeyKey = 'public_key';
-  static const _privateKeyKey = 'private_key';
-
-  final FlutterSecureStorage _storage = const FlutterSecureStorage();
-
-  Future<void> saveKeys({required String publicKey, required String privateKey}) async {
-    await _storage.write(key: _publicKeyKey, value: publicKey);
-    await _storage.write(key: _privateKeyKey, value: privateKey);
-  }
-
-  Future<String?> getPublicKey() async {
-    return await _storage.read(key: _publicKeyKey);
-  }
-
-  Future<String?> getPrivateKey() async {
-    return await _storage.read(key: _privateKeyKey);
-  }
-
-  Future<void> deleteKeys() async {
-    await _storage.delete(key: _publicKeyKey);
-    await _storage.delete(key: _privateKeyKey);
-  }
-}

dialer/lib/features/settings/key/manage_keys_page.dart

@@ -1,80 +0,0 @@
-import 'package:flutter/material.dart';
-import 'show_public_key_qr.dart';
-import 'show_public_key_text.dart';
-import 'generate_new_key_pair.dart';
-import 'export_private_key.dart';
-import 'delete_key_pair.dart';
-
-class KeyManagementPage extends StatelessWidget {
-  const KeyManagementPage({super.key});
-
-  void _navigateToOption(BuildContext context, String option) {
-    switch (option) {
-      case 'Display public key as text':
-        Navigator.push(
-          context,
-          MaterialPageRoute(builder: (context) => const DisplayPublicKeyTextPage()),
-        );
-        break;
-      case 'Display public key as QR code':
-        Navigator.push(
-          context,
-          MaterialPageRoute(builder: (context) => const DisplayPublicKeyQRCodePage()),
-        );
-        break;
-      case 'Generate a new key pair':
-        Navigator.push(
-          context,
-          MaterialPageRoute(builder: (context) => const GenerateNewKeyPairPage()),
-        );
-        break;
-      case 'Export private key to password-encrypted file (AES 256)':
-        Navigator.push(
-          context,
-          MaterialPageRoute(builder: (context) => const ExportPrivateKeyPage()),
-        );
-        break;
-      case 'Delete a key pair':
-        Navigator.push(
-          context,
-          MaterialPageRoute(builder: (context) => const DeleteKeyPairPage()),
-        );
-        break;
-      default:
-        break;
-    }
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    final keyManagementOptions = [
-      'Display public key as text',
-      'Display public key as QR code',
-      'Generate a new key pair',
-      'Export private key to password-encrypted file (AES 256)',
-      'Delete a key pair',
-    ];
-
-    return Scaffold(
-      backgroundColor: Colors.black,
-      appBar: AppBar(
-        title: const Text('Key Management'),
-      ),
-      body: ListView.builder(
-        itemCount: keyManagementOptions.length,
-        itemBuilder: (context, index) {
-          return ListTile(
-            title: Text(
-              keyManagementOptions[index],
-              style: const TextStyle(color: Colors.white),
-            ),
-            trailing: const Icon(Icons.arrow_forward_ios, color: Colors.white),
-            onTap: () {
-              _navigateToOption(context, keyManagementOptions[index]);
-            },
-          );
-        },
-      ),
-    );
-  }
-}

dialer/lib/features/settings/key/show_public_key_qr.dart

@@ -1,49 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:pretty_qr_code/pretty_qr_code.dart';
-import 'key_storage.dart';
-
-class DisplayPublicKeyQRCodePage extends StatelessWidget {
-  const DisplayPublicKeyQRCodePage({super.key});
-
-  Future<String?> _loadPublicKey() async {
-    final keyStorage = KeyStorage();
-    return keyStorage.getPublicKey();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: Colors.black,
-      appBar: AppBar(
-        title: const Text('Public Key in QR Code'),
-      ),
-      body: FutureBuilder<String?>(
-        future: _loadPublicKey(),
-        builder: (context, snapshot) {
-          if (snapshot.connectionState == ConnectionState.waiting) {
-            return const Center(child: CircularProgressIndicator());
-          }
-
-          final publicKey = snapshot.data;
-          if (publicKey == null) {
-            return const Center(
-              child: Text(
-                'No public key found.',
-                style: TextStyle(color: Colors.white),
-              ),
-            );
-          }
-
-          return Center(
-            child: PrettyQr(
-              data: publicKey,
-              size: 250,
-              roundEdges: true,
-              elementColor: Colors.white,
-            ),
-          );
-        },
-      ),
-    );
-  }
-}

dialer/lib/features/settings/key/show_public_key_text.dart

@@ -1,50 +0,0 @@
-import 'package:flutter/material.dart';
-import 'key_storage.dart';
-
-class DisplayPublicKeyTextPage extends StatelessWidget {
-  const DisplayPublicKeyTextPage({super.key});
-
-  Future<String?> _loadPublicKey() async {
-    final keyStorage = KeyStorage();
-    return await keyStorage.getPublicKey();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: Colors.black,
-      appBar: AppBar(
-        title: const Text('Public Key as Text'),
-      ),
-      body: FutureBuilder<String?>(
-        future: _loadPublicKey(),
-        builder: (context, snapshot) {
-          if (snapshot.connectionState == ConnectionState.waiting) {
-            return const Center(child: CircularProgressIndicator());
-          }
-
-          final publicKey = snapshot.data;
-          if (publicKey == null) {
-            return const Center(
-              child: Text(
-                'No public key found.',
-                style: TextStyle(color: Colors.white),
-              ),
-            );
-          }
-
-          return Center(
-            child: Padding(
-              padding: const EdgeInsets.all(16.0),
-              child: SelectableText(
-                publicKey,
-                style: const TextStyle(color: Colors.white),
-                textAlign: TextAlign.center,
-              ),
-            ),
-          );
-        },
-      ),
-    );
-  }
-}

dialer/lib/features/settings/settings.dart

@@ -2,9 +2,9 @@
 
 import 'package:flutter/material.dart';
 import 'package:dialer/features/settings/call/settingsCall.dart';
-import 'package:dialer/features/settings/sim/settings_accounts.dart';
+// import 'package:dialer/features/settings/cryptography/';
-import 'package:dialer/features/settings/key/manage_keys_page.dart';
 import 'package:dialer/features/settings/blocked/settings_blocked.dart';
+import 'cryptography/key_management.dart';
 
 class SettingsPage extends StatelessWidget {
   const SettingsPage({super.key});
@@ -17,16 +17,10 @@ class SettingsPage extends StatelessWidget {
           MaterialPageRoute(builder: (context) => const SettingsCallPage()),
         );
         break;
-      case 'Sim settings':
-        Navigator.push(
-          context,
-          MaterialPageRoute(builder: (context) => const SettingsAccountsPage()),
-        );
-        break;
       case 'Key management':
         Navigator.push(
           context,
-          MaterialPageRoute(builder: (context) => const KeyManagementPage()),
+          MaterialPageRoute(builder: (context) => ManageKeysPage()),
         );
         break;
       case 'Blocked numbers':
@@ -46,7 +40,6 @@ class SettingsPage extends StatelessWidget {
   Widget build(BuildContext context) {
     final settingsOptions = [
       'Calling settings',
-      'Page of telephone accounts',
       'Key management',
       'Blocked numbers'
     ];

dialer/lib/features/settings/sim/choose_sim.dart

@@ -1,91 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:mobile_number/mobile_number.dart';
-
-class ChooseSimPage extends StatefulWidget {
-  const ChooseSimPage({Key? key}) : super(key: key);
-
-  @override
-  _ChooseSimPageState createState() => _ChooseSimPageState();
-}
-
-class _ChooseSimPageState extends State<ChooseSimPage> {
-  List<SimCard> _simCards = [];
-  int? _selectedSimIndex;
-
-  @override
-  void initState() {
-    super.initState();
-    _fetchSimCards();
-  }
-
-  Future<void> _fetchSimCards() async {
-    try {
-      bool permissionsGranted = await MobileNumber.hasPhonePermission;
-      if (!permissionsGranted) {
-        await MobileNumber.requestPhonePermission;
-        permissionsGranted = await MobileNumber.hasPhonePermission;
-      }
-      if (permissionsGranted) {
-        List<SimCard>? simCards = await MobileNumber.getSimCards;
-        if (simCards != null && mounted) {
-          setState(() {
-            _simCards = simCards;
-            _selectedSimIndex = 0;
-          });
-        } else {
-          print('No SIM cards found');
-        }
-      } else {
-        print('Phone permission denied');
-      }
-    } catch (e) {
-      print('Failed to get SIM cards: $e');
-    }
-  }
-
-  void _onSimSelected(int? index) {
-    if (index != null) {
-      setState(() {
-        _selectedSimIndex = index;
-      });
-    }
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: Colors.black,
-      appBar: AppBar(
-        title: const Text('Choose SIM'),
-      ),
-      body: _simCards.isEmpty
-          ? const Center(
-        child: Text(
-          'No SIM cards found',
-          style: TextStyle(color: Colors.white),
-        ),
-      )
-          : ListView.builder(
-        itemCount: _simCards.length,
-        itemBuilder: (context, index) {
-          final sim = _simCards[index];
-          return ListTile(
-            title: Text(
-              'SIM ${index + 1}',
-              style: const TextStyle(color: Colors.white),
-            ),
-            subtitle: Text(
-              'Operator: ${sim.carrierName ?? 'N/A'}',
-              style: const TextStyle(color: Colors.grey),
-            ),
-            trailing: Radio<int>(
-              value: index,
-              groupValue: _selectedSimIndex,
-              onChanged: _onSimSelected,
-            ),
-          );
-        },
-      ),
-    );
-  }
-}

dialer/lib/features/settings/sim/settings_accounts.dart

@@ -1,57 +0,0 @@
-import 'package:flutter/material.dart';
-import 'choose_sim.dart';
-import 'sim_parameters.dart';
-
-class SettingsAccountsPage extends StatelessWidget {
-  const SettingsAccountsPage({Key? key}) : super(key: key);
-
-  void _navigateToAccountOption(BuildContext context, String option) {
-    switch (option) {
-      case 'Chose SIM card':
-        Navigator.push(
-          context,
-          MaterialPageRoute(builder: (context) => const ChooseSimPage()),
-        );
-        break;
-      case 'SIM card parameters':
-        Navigator.push(
-          context,
-          MaterialPageRoute(builder: (context) => const SimParametersPage()),
-        );
-        break;
-      default:
-        break;
-    }
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    final accountOptions = [
-      'Chose SIM card',
-      'SIM card parameters',
-    ];
-
-    return Scaffold(
-      backgroundColor: Colors.black,
-      appBar: AppBar(
-        title: const Text('Sim settings'),
-      ),
-      body: ListView.builder(
-        itemCount: accountOptions.length,
-        itemBuilder: (context, index) {
-          return ListTile(
-            title: Text(
-              accountOptions[index],
-              style: const TextStyle(color: Colors.white),
-            ),
-            trailing:
-            const Icon(Icons.arrow_forward_ios, color: Colors.white),
-            onTap: () {
-              _navigateToAccountOption(context, accountOptions[index]);
-            },
-          );
-        },
-      ),
-    );
-  }
-}

dialer/lib/features/settings/sim/sim_parameters.dart

@@ -1,89 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:mobile_number/mobile_number.dart';
-
-class SimParametersPage extends StatefulWidget {
-  const SimParametersPage({Key? key}) : super(key: key);
-
-  @override
-  _SimParametersPageState createState() => _SimParametersPageState();
-}
-
-class _SimParametersPageState extends State<SimParametersPage> {
-  List<SimCard> _simCards = [];
-
-  @override
-  void initState() {
-    super.initState();
-    _fetchSimParameters();
-  }
-
-  Future<void> _fetchSimParameters() async {
-    try {
-      bool permissionsGranted = await MobileNumber.hasPhonePermission;
-      if (!permissionsGranted) {
-        await MobileNumber.requestPhonePermission;
-        // Check again if permission is granted
-        permissionsGranted = await MobileNumber.hasPhonePermission;
-      }
-      if (permissionsGranted) {
-        List<SimCard>? simCards = await MobileNumber.getSimCards;
-        if (simCards != null && mounted) {
-          setState(() {
-            _simCards = simCards;
-          });
-        } else {
-          print('No SIM cards found');
-        }
-      } else {
-        print('Phone permission denied');
-      }
-    } catch (e) {
-      print('Failed to get SIM cards: $e');
-    }
-  }
-
-  Widget _buildSimInfo(SimCard sim, int index) {
-    return Card(
-      color: Colors.grey[850],
-      child: ListTile(
-        title: Text(
-          'SIM ${index + 1}',
-          style: const TextStyle(color: Colors.white),
-        ),
-        subtitle: Text(
-          '''
-Carrier Name: ${sim.carrierName ?? 'N/A'}
-Country Iso: ${sim.countryIso ?? 'N/A'}
-Display Name: ${sim.displayName ?? 'N/A'}
-Slot Index: ${sim.slotIndex ?? 'N/A'}
-Number: ${sim.number ?? 'N/A'}
-''',
-          style: const TextStyle(color: Colors.grey),
-        ),
-      ),
-    );
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: Colors.black,
-      appBar: AppBar(
-        title: const Text('SIM Parameters'),
-      ),
-      body: _simCards.isEmpty
-          ? const Center(
-        child: Text(
-          'No SIM cards found',
-          style: TextStyle(color: Colors.white),
-        ),
-      )
-          : ListView.builder(
-        itemCount: _simCards.length,
-        itemBuilder: (context, index) {
-          return _buildSimInfo(_simCards[index], index);
-        },
-      ),
-    );
-  }
-}

dialer/lib/main.dart

@@ -2,11 +2,28 @@ import 'package:dialer/features/home/home_page.dart';
 import 'package:flutter/material.dart';
 import 'package:dialer/features/contacts/contact_state.dart';
 import 'globals.dart' as globals;
+import 'package:dialer/services/cryptography/asymmetric_crypto_service.dart';
+import 'package:provider/provider.dart';
 
-void main() {
+void main() async {
+  WidgetsFlutterBinding.ensureInitialized();
   const stealthFlag = String.fromEnvironment('STEALTH', defaultValue: 'false');
   globals.isStealthMode = stealthFlag.toLowerCase() == 'true';
-  runApp(const Dialer());
+
+  final AsymmetricCryptoService cryptoService = AsymmetricCryptoService();
+  await cryptoService.initializeDefaultKeyPair();
+
+  runApp(
+    MultiProvider(
+      providers: [
+        Provider<AsymmetricCryptoService>(
+          create: (_) => cryptoService,
+        ),
+        // Add other providers here
+      ],
+      child: Dialer(),
+    ),
+  );
 }
 
 class Dialer extends StatelessWidget {

dialer/lib/services/cryptography/asymmetric_crypto_service.dart

@@ -0,0 +1,170 @@
+import 'dart:async';
+import 'dart:convert';
+import 'package:flutter/services.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:uuid/uuid.dart';
+
+class AsymmetricCryptoService {
+  static const MethodChannel _channel = MethodChannel('com.example.keystore');
+  final FlutterSecureStorage _secureStorage = FlutterSecureStorage();
+  final String _aliasPrefix = 'icing_';
+  final Uuid _uuid = Uuid();
+
+  /// Generates an ECDSA P-256 key pair with a unique alias and stores its metadata.
+  Future<String> generateKeyPair({String? label}) async {
+    try {
+      // Generate a unique identifier for the key
+      final String uuid = _uuid.v4();
+      final String alias = '$_aliasPrefix$uuid';
+
+      // Invoke native method to generate the key pair
+      await _channel.invokeMethod('generateKeyPair', {'alias': alias});
+
+      // Store key metadata securely
+      final Map<String, dynamic> keyMetadata = {
+        'alias': alias,
+        'label': label ?? 'Key $uuid',
+        'created_at': DateTime.now().toIso8601String(),
+      };
+
+      // Retrieve existing keys
+      final String? existingKeys = await _secureStorage.read(key: 'keys');
+      List<dynamic> keysList = existingKeys != null ? jsonDecode(existingKeys) : [];
+
+      // Add the new key
+      keysList.add(keyMetadata);
+
+      // Save updated keys list
+      await _secureStorage.write(key: 'keys', value: jsonEncode(keysList));
+
+      return alias;
+    } on PlatformException catch (e) {
+      throw Exception("Failed to generate key pair: ${e.message}");
+    }
+  }
+
+  /// Signs data using the specified key alias.
+  Future<String> signData(String alias, String data) async {
+    try {
+      final String signature = await _channel.invokeMethod('signData', {
+        'alias': alias,
+        'data': data,
+      });
+      return signature;
+    } on PlatformException catch (e) {
+      throw Exception("Failed to sign data with alias '$alias': ${e.message}");
+    }
+  }
+
+  /// Retrieves the public key for the specified alias.
+  Future<String> getPublicKey(String alias) async {
+    try {
+      final String publicKey = await _channel.invokeMethod('getPublicKey', {
+        'alias': alias,
+      });
+      return publicKey;
+    } on PlatformException catch (e) {
+      throw Exception("Failed to retrieve public key: ${e.message}");
+    }
+  }
+
+  /// Deletes the key pair associated with the specified alias and removes its metadata.
+  Future<void> deleteKeyPair(String alias) async {
+    try {
+      await _channel.invokeMethod('deleteKeyPair', {'alias': alias});
+      
+      final String? existingKeys = await _secureStorage.read(key: 'keys');
+      if (existingKeys != null) {
+        List<dynamic> keysList = jsonDecode(existingKeys);
+        keysList.removeWhere((key) => key['alias'] == alias);
+        await _secureStorage.write(key: 'keys', value: jsonEncode(keysList));
+      }
+    } on PlatformException catch (e) {
+      throw Exception("Failed to delete key pair: ${e.message}");
+    }
+  }
+
+  /// Retrieves all stored key metadata.
+  Future<List<Map<String, dynamic>>> getAllKeys() async {
+    try {
+      final String? existingKeys = await _secureStorage.read(key: 'keys');
+      if (existingKeys == null) {
+        print("No keys found");
+        return [];
+      }
+      List<dynamic> keysList = jsonDecode(existingKeys);
+      return keysList.cast<Map<String, dynamic>>();
+    } catch (e) {
+      throw Exception("Failed to retrieve keys: $e");
+    }
+  }
+
+  /// Checks if a key pair exists for the given alias.
+  Future<bool> keyPairExists(String alias) async {
+    try {
+      final bool exists = await _channel.invokeMethod('keyPairExists', {'alias': alias});
+      return exists;
+    } on PlatformException catch (e) {
+      throw Exception("Failed to check key pair existence: ${e.message}");
+    }
+  }
+
+  /// Initializes the default key pair if it doesn't exist.
+  Future<void> initializeDefaultKeyPair() async {
+    const String defaultAlias = 'icing_default';
+    final List<Map<String, dynamic>> keys = await getAllKeys();
+    
+    // Check if the key exists in metadata
+    final bool defaultKeyExists = keys.any((key) => key['alias'] == defaultAlias);
+    
+    if (!defaultKeyExists) {
+      await _channel.invokeMethod('generateKeyPair', {'alias': defaultAlias});
+      
+      final Map<String, dynamic> keyMetadata = {
+        'alias': defaultAlias,
+        'label': 'Default Key',
+        'created_at': DateTime.now().toIso8601String(),
+      };
+      
+      keys.add(keyMetadata);
+      await _secureStorage.write(key: 'keys', value: jsonEncode(keys));
+    }
+  }
+
+  /// Updates the label of a key with the specified alias.
+  ///
+  /// [alias]: The unique alias of the key to update.
+  /// [newLabel]: The new label to assign to the key.
+  ///
+  /// Throws an exception if the key is not found or the update fails.
+  Future<void> updateKeyLabel(String alias, String newLabel) async {
+    try {
+      // Retrieve existing keys
+      final String? existingKeys = await _secureStorage.read(key: 'keys');
+      if (existingKeys == null) {
+        throw Exception("No keys found to update.");
+      }
+
+      List<dynamic> keysList = jsonDecode(existingKeys);
+
+      // Find the key with the specified alias
+      bool keyFound = false;
+      for (var key in keysList) {
+        if (key['alias'] == alias) {
+          key['label'] = newLabel;
+          keyFound = true;
+          break;
+        }
+      }
+
+      if (!keyFound) {
+        throw Exception("Key with alias \"$alias\" not found.");
+      }
+
+      // Save the updated keys list
+      await _secureStorage.write(key: 'keys', value: jsonEncode(keysList));
+    } catch (e) {
+      throw Exception("Failed to update key label: $e");
+    }
+  }
+}

dialer/packages/mobile_number/CHANGELOG.md

@@ -1,59 +0,0 @@
-## 2.1.1
-
-* Fix Android building
-
-## 2.1.0
-
-* Make min sdk to Flutter 3.0.0 
-
-## 2.0.0
-
-* Remove null check operator from method ListenPhone 
-
-## 1.0.4
-
-* Null safety support
-
-## 1.0.3
-
-* Fix crash because of null value on empty number
-
-## 1.0.2
-
-* Support old Flutter plugin V1
-
-## 1.0.1
-
-* Fix crash related to Android 10
-
-## 1.0.0
-
-* Addded has phone permission
-* Added request phone permission
-* Added phone permission listener
-* Fix bugs
-
-## 0.0.6
-
-* Add sample image.
-
-## 0.0.5
-
-* Add support for dual sim card.
-
-## 0.0.4
-
-* Print exception message on debugging console.
-
-## 0.0.3
-
-* Migrate to AndroidX
-
-## 0.0.2
-
-* Add gt mobile number native code to Android
-
-
-## 0.0.1
-
-* Initial Release.

dialer/packages/mobile_number/LICENSE

@@ -1,13 +0,0 @@
-   Copyright 2023 Amr Eniou
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-     http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.

dialer/packages/mobile_number/README.md

@@ -1,66 +0,0 @@
-# mobile_number
-
-This is a FLutter Plugin to get the device mobile number.
-#### Note: It works for Android only because getting mobile number of sim card is not supported in iOS.
-#### Note: If the mobile number is not pre-exist on sim card it will not return te phone number.
-
-## Installation 
-#### Link on Flutter plugins
-https://pub.dev/packages/mobile_number
-
-#### Note: 
-if you still using depecated FlutterActivty on MainActivity.java
-which is import of 
-- `import io.flutter.app.FlutterActivity;`
-
-not 
-- `import io.flutter.embedding.android.FlutterActivity;`
-
-then you need to add the following to your MainActivity.java
-``` 
-@Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        MobileNumberPlugin.registerWith(registrarFor("com.amorenew.mobile_number.MobileNumberPlugin()"));
-    }
-  ```
-
-## Usage
-
-#### Check Phone Permission
-
-```await MobileNumber.hasPhonePermission```
-
-#### Request Phone Permission
-
-```await MobileNumber.requestPhonePermission```
-
-#### Listen to widget resume after Phone Permission request
-
-```MobileNumber.listenPhonePermission((isPermissionGranted) {
-      if (isPermissionGranted) {
-        //Get mobile number
-      } else {
-        //Request Phone Permission
-      }
-    });
-  ```
-
-#### Get first sim card number
-
-```Future<String> getMobileNumber() async {
-    final String mobileNumber = await MobileNumber.mobileNumber;
-    return mobileNumber;
-  }
-  ```
-
-#### Get List of sim cards for dual sim cards
-
-```Future<List<SimCard>> geSimCards() async {
-    final List<SimCard> simCards = await MobileNumber.getSimCards;
-    return simCards;
-  }
-  ```
-  
-
-![alt text](https://raw.githubusercontent.com/amorenew/Flutter-Mobile-Number-Plugin/master/sample1.png)

dialer/packages/mobile_number/android/build.gradle

@@ -1,41 +0,0 @@
-group 'com.amorenew.mobile_number'
-version '1.0-SNAPSHOT'
-
-buildscript {
-    repositories {
-        google()
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:7.2.2'
-    }
-}
-
-rootProject.allprojects {
-    repositories {
-        google()
-        mavenCentral()
-    }
-}
-
-apply plugin: 'com.android.library'
-
-android {
-    compileSdkVersion 33
-    namespace "com.amorenew.mobile_number"
-
-    defaultConfig {
-        targetSdkVersion 33
-        minSdkVersion 21
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-    }
-    lintOptions {
-        disable 'InvalidPackage'
-    }
-}
-
-dependencies {
-    implementation 'androidx.core:core:1.9.0'
-    // Other dependencies...
-}

dialer/packages/mobile_number/android/gradle.properties

@@ -1,3 +0,0 @@
-org.gradle.jvmargs=-Xmx1536M
-android.enableR8=true
-android.useAndroidX=true

dialer/packages/mobile_number/android/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +0,0 @@
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.1-bin.zip
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists

dialer/packages/mobile_number/android/res/values/strings_en.arb

@@ -1 +0,0 @@
-{}

dialer/packages/mobile_number/android/settings.gradle

@@ -1 +0,0 @@
-rootProject.name = 'mobile_number'

dialer/packages/mobile_number/android/src/main/AndroidManifest.xml

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.amorenew.mobile_number"> <!-- Package is "com.amorenew.mobile_number" -->
-    <uses-permission android:name="android.permission.READ_PHONE_STATE"
-        android:maxSdkVersion="29" />
-    <uses-permission android:name="android.permission.READ_PHONE_NUMBERS" />
-    <meta-data
-        android:name="flutterEmbedding"
-        android:value="2" />
-</manifest>

dialer/packages/mobile_number/android/src/main/java/com/amorenew/mobile_number/CountryToPhonePrefix.java

@@ -1,262 +0,0 @@
-package com.amorenew.mobile_number;
-
-import java.util.HashMap;
-import java.util.Map;
-
-class CountryToPhonePrefix {
-
-    private static Map<String, String> map = new HashMap<>();
-
-    static String prefixFor(String iso2CountryCode) {
-        String result = map.get(iso2CountryCode.toUpperCase());
-        if (result == null) {
-            return "";
-        }
-        return result;
-    }
-
-    static {
-        map.put("AC", "247");
-        map.put("AD", "376");
-        map.put("AE", "971");
-        map.put("AF", "93");
-        map.put("AG", "1268");
-        map.put("AI", "1264");
-        map.put("AL", "355");
-        map.put("AM", "374");
-        map.put("AN", "599");
-        map.put("AO", "244");
-        map.put("AR", "54");
-        map.put("AS", "1684");
-        map.put("AT", "43");
-        map.put("AU", "61");
-        map.put("AW", "297");
-        map.put("AX", "35818");
-//        map.put("AZ", "37497");
-        map.put("AZ", "994");
-        map.put("BA", "387");
-        map.put("BB", "1246");
-        map.put("BD", "880");
-        map.put("BE", "32");
-        map.put("BF", "226");
-        map.put("BG", "359");
-        map.put("BH", "973");
-        map.put("BI", "257");
-        map.put("BJ", "229");
-        map.put("BM", "1441");
-        map.put("BN", "673");
-        map.put("BO", "591");
-        map.put("BR", "55");
-        map.put("BS", "1242");
-        map.put("BT", "975");
-        map.put("BW", "267");
-        map.put("BY", "375");
-        map.put("BZ", "501");
-        map.put("CA", "1");
-        map.put("CC", "61");
-        map.put("CD", "243");
-        map.put("CF", "236");
-        map.put("CG", "242");
-        map.put("CH", "41");
-        map.put("CI", "225");
-        map.put("CK", "682");
-        map.put("CL", "56");
-        map.put("CM", "237");
-        map.put("CN", "86");
-        map.put("CO", "57");
-        map.put("CR", "506");
-        map.put("CS", "381");
-        map.put("CU", "53");
-        map.put("CV", "238");
-        map.put("CX", "61");
-//        map.put("CY", "90392");
-        map.put("CY", "357");
-        map.put("CZ", "420");
-        map.put("DE", "49");
-        map.put("DJ", "253");
-        map.put("DK", "45");
-        map.put("DM", "1767");
-        map.put("DO", "1809"); // and 1829?
-        map.put("DZ", "213");
-        map.put("EC", "593");
-        map.put("EE", "372");
-        map.put("EG", "20");
-        map.put("EH", "212");
-        map.put("ER", "291");
-        map.put("ES", "34");
-        map.put("ET", "251");
-        map.put("FI", "358");
-        map.put("FJ", "679");
-        map.put("FK", "500");
-        map.put("FM", "691");
-        map.put("FO", "298");
-        map.put("FR", "33");
-        map.put("GA", "241");
-        map.put("GB", "44");
-        map.put("GD", "1473");
-        map.put("GE", "995");
-        map.put("GF", "594");
-        map.put("GG", "44");
-        map.put("GH", "233");
-        map.put("GI", "350");
-        map.put("GL", "299");
-        map.put("GM", "220");
-        map.put("GN", "224");
-        map.put("GP", "590");
-        map.put("GQ", "240");
-        map.put("GR", "30");
-        map.put("GT", "502");
-        map.put("GU", "1671");
-        map.put("GW", "245");
-        map.put("GY", "592");
-        map.put("HK", "852");
-        map.put("HN", "504");
-        map.put("HR", "385");
-        map.put("HT", "509");
-        map.put("HU", "36");
-        map.put("ID", "62");
-        map.put("IE", "353");
-        map.put("IL", "972");
-        map.put("IM", "44");
-        map.put("IN", "91");
-        map.put("IO", "246");
-        map.put("IQ", "964");
-        map.put("IR", "98");
-        map.put("IS", "354");
-        map.put("IT", "39");
-        map.put("JE", "44");
-        map.put("JM", "1876");
-        map.put("JO", "962");
-        map.put("JP", "81");
-        map.put("KE", "254");
-        map.put("KG", "996");
-        map.put("KH", "855");
-        map.put("KI", "686");
-        map.put("KM", "269");
-        map.put("KN", "1869");
-        map.put("KP", "850");
-        map.put("KR", "82");
-        map.put("KW", "965");
-        map.put("KY", "1345");
-        map.put("KZ", "7");
-        map.put("LA", "856");
-        map.put("LB", "961");
-        map.put("LC", "1758");
-        map.put("LI", "423");
-        map.put("LK", "94");
-        map.put("LR", "231");
-        map.put("LS", "266");
-        map.put("LT", "370");
-        map.put("LU", "352");
-        map.put("LV", "371");
-        map.put("LY", "218");
-        map.put("MA", "212");
-        map.put("MC", "377");
-//        map.put("MD", "373533");
-        map.put("MD", "373");
-        map.put("ME", "382");
-        map.put("MG", "261");
-        map.put("MH", "692");
-        map.put("MK", "389");
-        map.put("ML", "223");
-        map.put("MM", "95");
-        map.put("MN", "976");
-        map.put("MO", "853");
-        map.put("MP", "1670");
-        map.put("MQ", "596");
-        map.put("MR", "222");
-        map.put("MS", "1664");
-        map.put("MT", "356");
-        map.put("MU", "230");
-        map.put("MV", "960");
-        map.put("MW", "265");
-        map.put("MX", "52");
-        map.put("MY", "60");
-        map.put("MZ", "258");
-        map.put("NA", "264");
-        map.put("NC", "687");
-        map.put("NE", "227");
-        map.put("NF", "672");
-        map.put("NG", "234");
-        map.put("NI", "505");
-        map.put("NL", "31");
-        map.put("NO", "47");
-        map.put("NP", "977");
-        map.put("NR", "674");
-        map.put("NU", "683");
-        map.put("NZ", "64");
-        map.put("OM", "968");
-        map.put("PA", "507");
-        map.put("PE", "51");
-        map.put("PF", "689");
-        map.put("PG", "675");
-        map.put("PH", "63");
-        map.put("PK", "92");
-        map.put("PL", "48");
-        map.put("PM", "508");
-        map.put("PR", "1787"); // and 1939 ?
-        map.put("PS", "970");
-        map.put("PT", "351");
-        map.put("PW", "680");
-        map.put("PY", "595");
-        map.put("QA", "974");
-        map.put("RE", "262");
-        map.put("RO", "40");
-        map.put("RS", "381");
-        map.put("RU", "7");
-        map.put("RW", "250");
-        map.put("SA", "966");
-        map.put("SB", "677");
-        map.put("SC", "248");
-        map.put("SD", "249");
-        map.put("SE", "46");
-        map.put("SG", "65");
-        map.put("SH", "290");
-        map.put("SI", "386");
-        map.put("SJ", "47");
-        map.put("SK", "421");
-        map.put("SL", "232");
-        map.put("SM", "378");
-        map.put("SN", "221");
-        map.put("SO", "252");
-        map.put("SR", "597");
-        map.put("ST", "239");
-        map.put("SV", "503");
-        map.put("SY", "963");
-        map.put("SZ", "268");
-        map.put("TA", "290");
-        map.put("TC", "1649");
-        map.put("TD", "235");
-        map.put("TG", "228");
-        map.put("TH", "66");
-        map.put("TJ", "992");
-        map.put("TK", "690");
-        map.put("TL", "670");
-        map.put("TM", "993");
-        map.put("TN", "216");
-        map.put("TO", "676");
-        map.put("TR", "90");
-        map.put("TT", "1868");
-        map.put("TV", "688");
-        map.put("TW", "886");
-        map.put("TZ", "255");
-        map.put("UA", "380");
-        map.put("UG", "256");
-        map.put("US", "1");
-        map.put("UY", "598");
-        map.put("UZ", "998");
-        map.put("VA", "379");
-        map.put("VC", "1784");
-        map.put("VE", "58");
-        map.put("VG", "1284");
-        map.put("VI", "1340");
-        map.put("VN", "84");
-        map.put("VU", "678");
-        map.put("WF", "681");
-        map.put("WS", "685");
-        map.put("YE", "967");
-        map.put("YT", "262");
-        map.put("ZA", "27");
-        map.put("ZM", "260");
-        map.put("ZW", "263");
-    }}

dialer/packages/mobile_number/android/src/main/java/com/amorenew/mobile_number/MobileNumberPlugin.java

@@ -1,248 +0,0 @@
-package com.amorenew.mobile_number;
-
-import android.Manifest;
-import android.annotation.SuppressLint;
-import android.app.Activity;
-import android.content.Context;
-import android.content.pm.PackageManager;
-import android.os.Build;
-import android.telephony.SubscriptionInfo;
-import android.telephony.SubscriptionManager;
-import android.telephony.TelephonyManager;
-import android.util.Log;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.RequiresApi;
-import androidx.core.app.ActivityCompat;
-import androidx.core.content.ContextCompat;
-
-import org.json.JSONArray;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import io.flutter.embedding.engine.plugins.FlutterPlugin;
-import io.flutter.embedding.engine.plugins.activity.ActivityAware;
-import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding;
-import io.flutter.plugin.common.BinaryMessenger;
-import io.flutter.plugin.common.EventChannel;
-import io.flutter.plugin.common.MethodCall;
-import io.flutter.plugin.common.MethodChannel;
-import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
-import io.flutter.plugin.common.MethodChannel.Result;
-import io.flutter.plugin.common.PluginRegistry.Registrar;
-import io.flutter.plugin.common.PluginRegistry.RequestPermissionsResultListener;
-
-/**
- * MobileNumberPlugin
- */
-public class MobileNumberPlugin implements FlutterPlugin, ActivityAware, MethodCallHandler, RequestPermissionsResultListener {
-    private static final int MY_PERMISSIONS_REQUEST_READ_PHONE_STATE = 0;
-    final String Event_phonePermissionResult = "requestPhonePermission=";
-    private EventChannel.EventSink permissionEvent;
-    private Context applicationContext;
-    private Activity activity;
-    private TelephonyManager telephonyManager;
-    private Result result;
-    private MethodChannel methodChannel;
-    private EventChannel permissionEventChannel;
-
-
-    /**
-     * Plugin registration.
-     */
-    public static void registerWith(Registrar registrar) {
-        final MobileNumberPlugin instance = new MobileNumberPlugin();
-        instance.onAttachedToEngine(registrar.context(), registrar.messenger(), registrar.activity());
-    }
-
-    @Override
-    public void onAttachedToEngine(@NonNull FlutterPluginBinding flutterPluginBinding) {
-        onAttachedToEngine(flutterPluginBinding.getApplicationContext(), flutterPluginBinding.getBinaryMessenger(), null);
-    }
-
-    private void onAttachedToEngine(Context applicationContext, BinaryMessenger messenger, Activity _activity) {
-        this.applicationContext = applicationContext;
-        if(_activity!=null)
-            this.activity=_activity;
-        methodChannel = new MethodChannel(messenger, "mobile_number");
-        methodChannel.setMethodCallHandler(this);
-        permissionEventChannel = new EventChannel(messenger, "phone_permission_event");
-        permissionEventChannel.setStreamHandler(new EventChannel.StreamHandler() {
-            @Override
-            public void onListen(Object o, EventChannel.EventSink eventSink) {
-                permissionEvent = eventSink;
-            }
-
-            @Override
-            public void onCancel(Object o) {
-
-            }
-        });
-    }
-
-    @Override
-    public void onDetachedFromEngine(@NonNull FlutterPluginBinding flutterPluginBinding) {
-
-    }
-
-    @Override
-    public void onAttachedToActivity(@NonNull ActivityPluginBinding activityPluginBinding) {
-        //MobileNumberPlugin.activity = activityPluginBinding.getActivity();
-        //activityV2 = activityPluginBinding.getActivity();
-        activity = activityPluginBinding.getActivity();
-    }
-
-    @Override
-    public void onDetachedFromActivityForConfigChanges() {
-
-    }
-
-    @Override
-    public void onReattachedToActivityForConfigChanges(@NonNull ActivityPluginBinding activityPluginBinding) {
-
-    }
-
-    @Override
-    public void onDetachedFromActivity() {
-
-    }
-
-    @Override
-    public void onMethodCall(MethodCall call, Result result) {
-        this.result = result;
-        final String method_GetMobileNumber = "getMobileNumber";
-        final String method_hasPhonePermission = "hasPhonePermission";
-        final String method_requestPhonePermission = "requestPhonePermission";
-        switch (call.method) {
-            case method_GetMobileNumber:
-                telephonyManager = (TelephonyManager) applicationContext
-                        .getSystemService(Context.TELEPHONY_SERVICE);
-                getMobileNumber();
-                break;
-            case method_hasPhonePermission:
-                result.success(hasPhonePermission());
-                break;
-            case method_requestPhonePermission:
-                requestPhonePermission();
-                break;
-            default:
-                result.notImplemented();
-                break;
-        }
-    }
-
-    private boolean hasPhonePermission() {
-        if (android.os.Build.VERSION.SDK_INT > Build.VERSION_CODES.Q) {
-            return ContextCompat.checkSelfPermission(applicationContext,
-                    Manifest.permission.READ_PHONE_NUMBERS) == PackageManager.PERMISSION_GRANTED;
-        } else {
-            return ContextCompat.checkSelfPermission(applicationContext,
-                    Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_GRANTED;
-        }
-    }
-
-    private void requestPhonePermission() {
-        if (android.os.Build.VERSION.SDK_INT > Build.VERSION_CODES.Q) {
-            if (ActivityCompat.shouldShowRequestPermissionRationale(activity,
-                    Manifest.permission.READ_PHONE_NUMBERS)) {
-                // Show an explanation to the user *asynchronously* -- don't block
-                // this thread waiting for the user's response! After the user
-                // sees the explanation, try again to request the permission.
-            } else {
-                ActivityCompat.requestPermissions(activity,
-                        new String[]{Manifest.permission.READ_PHONE_NUMBERS}, MY_PERMISSIONS_REQUEST_READ_PHONE_STATE);
-            }
-        } else {
-            if (ActivityCompat.shouldShowRequestPermissionRationale(activity,
-                    Manifest.permission.READ_PHONE_STATE)) {
-            } else {
-                ActivityCompat.requestPermissions(activity,
-                        new String[]{Manifest.permission.READ_PHONE_STATE}, MY_PERMISSIONS_REQUEST_READ_PHONE_STATE);
-            }
-        }
-    }
-
-    private void getMobileNumber() {
-        if (!hasPhonePermission()) {
-            requestPhonePermission();
-        } else {
-            // Permission has already been granted
-            generateMobileNumber();
-
-        }
-    }
-
-    @SuppressLint("HardwareIds")
-    private void generateMobileNumber() {
-        JSONArray simJsonArray = new JSONArray();
-        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP_MR1) {
-            for (SubscriptionInfo subscriptionInfo : getSubscriptions()) {
-                SimCard simCard = new SimCard(telephonyManager, subscriptionInfo);
-                simJsonArray.put(simCard.toJSON());
-            }
-        }
-        if (simJsonArray.length()==0) {
-            SimCard simCard = getSingleSimCard();
-            if (simCard != null) {
-                simJsonArray.put(simCard.toJSON());
-            }
-        }
-
-        if (simJsonArray.toString().isEmpty()) {
-            Log.d("UNAVAILABLE", "No phone number on sim card#3");
-            result.error("UNAVAILABLE", "No phone number on sim card", null);
-        } else result.success(simJsonArray.toString());
-    }
-
-
-    @SuppressLint("HardwareIds")
-    SimCard getSingleSimCard() {
-        if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.READ_PHONE_NUMBERS) == PackageManager.PERMISSION_DENIED
-                && ActivityCompat.checkSelfPermission(activity, Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_DENIED) {
-            Log.e("UNAVAILABLE", "No phone number on sim card Permission Denied#2", null);
-            return null;
-        } else if (telephonyManager.getLine1Number() == null || telephonyManager.getLine1Number().isEmpty()) {
-            Log.e("UNAVAILABLE", "No phone number on sim card#2", null);
-            return null;
-        }
-        return new SimCard(telephonyManager);
-    }
-
-    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP_MR1)
-    List<SubscriptionInfo> getSubscriptions() {
-        final SubscriptionManager subscriptionManager = (SubscriptionManager) activity.getSystemService(Context.TELEPHONY_SUBSCRIPTION_SERVICE);
-
-        if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.READ_PHONE_NUMBERS) == PackageManager.PERMISSION_DENIED
-                && ActivityCompat.checkSelfPermission(activity, Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_DENIED) {
-            Log.e("UNAVAILABLE", "No phone number on sim card Permission Denied#1", null);
-            return new ArrayList<>();
-        } else if (subscriptionManager == null) {
-            Log.e("UNAVAILABLE", "No phone number on sim card#1", null);
-            return new ArrayList<>();
-        }
-        return subscriptionManager.getActiveSubscriptionInfoList();
-    }
-
-
-    @Override
-    public boolean onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
-                                              @NonNull int[] grantResults) {
-        // If request is cancelled, the result arrays are empty.
-        if (requestCode == MY_PERMISSIONS_REQUEST_READ_PHONE_STATE) {
-            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
-                if (permissionEvent != null)
-                    permissionEvent.success(true);
-                generateMobileNumber();
-                return true;
-            } else {
-                if (permissionEvent != null)
-                    permissionEvent.success(false);
-            }
-        }
-        result.error("PERMISSION", "onRequestPermissionsResult is not granted", null);
-        return false;
-    }
-
-
-}

dialer/packages/mobile_number/android/src/main/java/com/amorenew/mobile_number/SimCard.java

@@ -1,73 +0,0 @@
-package com.amorenew.mobile_number;
-
-import android.annotation.SuppressLint;
-import android.os.Build;
-import android.telephony.SubscriptionInfo;
-import android.telephony.TelephonyManager;
-
-import androidx.annotation.RequiresApi;
-
-import org.json.JSONException;
-import org.json.JSONObject;
-
-public class SimCard {
-
-    private String carrierName = "";
-    private String displayName = "";
-    private int slotIndex = 0;
-    private String number = "";
-    private String countryIso = "";
-    private String countryPhonePrefix = "";
-
-    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP_MR1)
-    public SimCard(TelephonyManager telephonyManager, SubscriptionInfo subscriptionInfo) {
-        this.carrierName = subscriptionInfo.getCarrierName().toString();
-        this.displayName = subscriptionInfo.getDisplayName().toString();
-        this.slotIndex = subscriptionInfo.getSimSlotIndex();
-        this.number = subscriptionInfo.getNumber();
-        if (subscriptionInfo.getCountryIso() != null && !subscriptionInfo.getCountryIso().isEmpty())
-            this.countryIso = subscriptionInfo.getCountryIso();
-        else if (telephonyManager.getSimCountryIso() != null)
-            this.countryIso = telephonyManager.getSimCountryIso();
-        this.countryPhonePrefix = CountryToPhonePrefix.prefixFor(this.countryIso);
-    }
-
-    @SuppressLint({"MissingPermission", "HardwareIds"})
-    public SimCard(TelephonyManager telephonyManager) {
-        if (telephonyManager.getSimOperator() != null)
-            carrierName = telephonyManager.getSimOperatorName();
-        if (telephonyManager.getSimOperator() != null)
-            displayName = telephonyManager.getSimOperatorName();
-        if (telephonyManager.getSimCountryIso() != null) {
-            countryIso = telephonyManager.getSimCountryIso();
-            countryPhonePrefix = CountryToPhonePrefix.prefixFor(countryIso);
-        }
-        if (telephonyManager.getLine1Number() != null && !telephonyManager.getLine1Number().isEmpty()) {
-            if (telephonyManager.getLine1Number().startsWith("0"))
-                number = countryPhonePrefix + telephonyManager.getLine1Number().substring(1);
-            number = telephonyManager.getLine1Number();
-        }
-    }
-
-// final JSONArray jsonArray = new JSONArray();
-
-    JSONObject toJSON() {
-        JSONObject json = new JSONObject();
-        try {
-            json.put("carrierName", carrierName);
-            json.put("displayName", displayName);
-            json.put("slotIndex", slotIndex);
-            json.put("number", number);
-            json.put("countryIso", countryIso);
-            json.put("countryPhonePrefix", countryPhonePrefix);
-        } catch (JSONException e) {
-            e.printStackTrace();
-        }
-        return json;
-
-    }
-}
-
-
-
-

dialer/packages/mobile_number/example/README.md

@@ -1,16 +0,0 @@
-# mobile_number_example
-
-Demonstrates how to use the mobile_number plugin.
-
-## Getting Started
-
-This project is a starting point for a Flutter application.
-
-A few resources to get you started if this is your first Flutter project:
-
-- [Lab: Write your first Flutter app](https://flutter.dev/docs/get-started/codelab)
-- [Cookbook: Useful Flutter samples](https://flutter.dev/docs/cookbook)
-
-For help getting started with Flutter, view our
-[online documentation](https://flutter.dev/docs), which offers tutorials,
-samples, guidance on mobile development, and a full API reference.

dialer/packages/mobile_number/example/android/app/build.gradle

@@ -1,58 +0,0 @@
-def localProperties = new Properties()
-def localPropertiesFile = rootProject.file('local.properties')
-if (localPropertiesFile.exists()) {
-    localPropertiesFile.withReader('UTF-8') { reader ->
-        localProperties.load(reader)
-    }
-}
-
-def flutterRoot = localProperties.getProperty('flutter.sdk')
-if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
-}
-
-def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
-if (flutterVersionCode == null) {
-    flutterVersionCode = '1'
-}
-
-def flutterVersionName = localProperties.getProperty('flutter.versionName')
-if (flutterVersionName == null) {
-    flutterVersionName = '1.0'
-}
-
-apply plugin: 'com.android.application'
-apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
-
-android {
-    compileSdk 33
-
-
-    defaultConfig {
-        applicationId "com.example.mobile_number_example"
-        minSdkVersion 21
-        targetSdkVersion 33
-        versionCode flutterVersionCode.toInteger()
-        versionName flutterVersionName
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-    }
-
-    buildTypes {
-        release {
-            signingConfig signingConfigs.debug
-        }
-    }
-    lint {
-        disable 'InvalidPackage'
-    }
-}
-
-flutter {
-    source '../..'
-}
-
-dependencies {
-    testImplementation 'junit:junit:4.13.2'
-    androidTestImplementation 'androidx.test:runner:1.4.0'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
-}

dialer/packages/mobile_number/example/android/app/src/debug/AndroidManifest.xml

@@ -1,7 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.mobile_number_example">
-    <!-- Flutter needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-</manifest>

dialer/packages/mobile_number/example/android/app/src/main/AndroidManifest.xml

@@ -1,58 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.mobile_number_example">
-
-    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
-         calls FlutterMain.startInitialization(this); in its onCreate method.
-         In most cases you can leave this as-is, but you if you want to provide
-         additional functionality it is fine to subclass or reimplement
-         FlutterApplication and put your custom class here. -->
-    <application
-        android:name="${applicationName}"
-        android:icon="@mipmap/ic_launcher"
-        android:label="mobile_number_example">
-        <activity
-            android:name=".MainActivity"
-            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
-            android:hardwareAccelerated="true"
-            android:launchMode="singleTop"
-            android:theme="@style/LaunchTheme"
-            android:windowSoftInputMode="adjustResize"
-            android:exported="true">
-            <!-- This keeps the window background of the activity showing
-                 until Flutter renders its first frame. It can be removed if
-                 there is no splash screen (such as the default splash screen
-                 defined in @style/LaunchTheme). -->
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
-                <category android:name="android.intent.category.LAUNCHER" />
-            </intent-filter>
-            <meta-data
-                android:name="io.flutter.embedding.android.NormalTheme"
-                android:resource="@style/NormalTheme" />
-            <!-- Displays an Android View that continues showing the launch screen
-                 Drawable until Flutter paints its first frame, then this splash
-                 screen fades out. A splash screen is useful to avoid any visual
-                 gap between the end of Android's launch screen and the painting of
-                 Flutter's first frame. -->
-            <meta-data
-                android:name="io.flutter.embedding.android.SplashScreenDrawable"
-                android:resource="@drawable/launch_background" />
-
-            <meta-data
-                android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
-                android:value="true" />
-        </activity>
-
-        <activity
-            android:name=".EmbeddingV1Activity"
-            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale"
-            android:hardwareAccelerated="true"
-            android:theme="@style/LaunchTheme"
-            android:windowSoftInputMode="adjustResize" />
-
-        <meta-data
-            android:name="flutterEmbedding"
-            android:value="2" />
-
-    </application>
-</manifest>

dialer/packages/mobile_number/example/android/app/src/main/java/com/example/mobile_number_example/EmbeddingV1Activity.java

@@ -1,14 +0,0 @@
-package com.example.mobile_number_example;
-
-import android.os.Bundle;
-
-import com.amorenew.mobile_number.MobileNumberPlugin;
-import io.flutter.app.FlutterActivity;
-
-public class EmbeddingV1Activity extends FlutterActivity {
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        MobileNumberPlugin.registerWith(registrarFor("com.amorenew.mobile_number.MobileNumberPlugin()"));
-    }
-}

dialer/packages/mobile_number/example/android/app/src/main/java/com/example/mobile_number_example/MainActivity.java

@@ -1,15 +0,0 @@
-package com.example.mobile_number_example;
-
-import io.flutter.embedding.android.FlutterActivity;
-
-
-public class MainActivity extends FlutterActivity {
-
-
-  // @Override
-  // public void configureFlutterEngine(FlutterEngine flutterEngine) {
-  //   super.configureFlutterEngine(flutterEngine);
-  //   flutterEngine.getPlugins().add(new com.example.mobile_number.MobileNumberPlugin());
-  // }
-
-}

dialer/packages/mobile_number/example/android/app/src/main/res/drawable/launch_background.xml

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Modify this file to customize your launch splash screen -->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="@android:color/white" />
-
-    <!-- You can insert your own image assets here -->
-    <!-- <item>
-        <bitmap
-            android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
-</layer-list>

dialer/packages/mobile_number/example/android/app/src/main/res/values/styles.xml

@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
-        <!-- Show a splash screen on the activity. Automatically removed when
-             Flutter draws its first frame -->
-        <item name="android:windowBackground">@drawable/launch_background</item>
-    </style>
-
-    <!-- Theme applied to the Android Window as soon as the process has started.
-         This theme determines the color of the Android Window while your
-         Flutter UI initializes, as well as behind your Flutter UI while its
-         running.
-         
-         This Theme is only used starting with V2 of Flutter's Android embedding. -->
-    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
-        <item name="android:windowBackground">@android:color/white</item>
-    </style>
-</resources>

dialer/packages/mobile_number/example/android/app/src/profile/AndroidManifest.xml

@@ -1,7 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.mobile_number_example">
-    <!-- Flutter needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-</manifest>

dialer/packages/mobile_number/example/android/build.gradle

@@ -1,29 +0,0 @@
-buildscript {
-    repositories {
-        google()
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:7.2.2'
-    }
-}
-
-allprojects {
-    repositories {
-        google()
-        mavenCentral()
-    }
-}
-
-rootProject.buildDir = '../build'
-subprojects {
-    project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
-    project.evaluationDependsOn(':app')
-}
-
-task clean(type: Delete) {
-    delete rootProject.buildDir
-}

dialer/packages/mobile_number/example/android/gradle.properties

@@ -1,4 +0,0 @@
-android.enableJetifier=true
-android.useAndroidX=true
-org.gradle.jvmargs=-Xmx1536M
-android.enableR8=true

dialer/packages/mobile_number/example/android/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +0,0 @@
-#Tue May 19 14:57:48 GST 2020
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.1-bin.zip

dialer/packages/mobile_number/example/android/res/values/strings_en.arb

@@ -1 +0,0 @@
-{}

dialer/packages/mobile_number/example/android/settings.gradle

@@ -1,15 +0,0 @@
-include ':app'
-
-def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()
-
-def plugins = new Properties()
-def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
-if (pluginsFile.exists()) {
-    pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) }
-}
-
-plugins.each { name, path ->
-    def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
-    include ":$name"
-    project(":$name").projectDir = pluginDirectory
-}

dialer/packages/mobile_number/example/android/settings_aar.gradle

@@ -1 +0,0 @@
-include ':app'

dialer/packages/mobile_number/example/ios/Flutter/AppFrameworkInfo.plist

@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-  <key>CFBundleDevelopmentRegion</key>
-  <string>en</string>
-  <key>CFBundleExecutable</key>
-  <string>App</string>
-  <key>CFBundleIdentifier</key>
-  <string>io.flutter.flutter.app</string>
-  <key>CFBundleInfoDictionaryVersion</key>
-  <string>6.0</string>
-  <key>CFBundleName</key>
-  <string>App</string>
-  <key>CFBundlePackageType</key>
-  <string>FMWK</string>
-  <key>CFBundleShortVersionString</key>
-  <string>1.0</string>
-  <key>CFBundleSignature</key>
-  <string>????</string>
-  <key>CFBundleVersion</key>
-  <string>1.0</string>
-  <key>MinimumOSVersion</key>
-  <string>8.0</string>
-</dict>
-</plist>

dialer/packages/mobile_number/example/ios/Flutter/Debug.xcconfig

@@ -1,2 +0,0 @@
-#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
-#include "Generated.xcconfig"

dialer/packages/mobile_number/example/ios/Flutter/Release.xcconfig

@@ -1,2 +0,0 @@
-#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
-#include "Generated.xcconfig"

dialer/packages/mobile_number/example/ios/Podfile

@@ -1,84 +0,0 @@
-# Uncomment this line to define a global platform for your project
-# platform :ios, '9.0'
-
-# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
-ENV['COCOAPODS_DISABLE_STATS'] = 'true'
-
-project 'Runner', {
-  'Debug' => :debug,
-  'Profile' => :release,
-  'Release' => :release,
-}
-
-def parse_KV_file(file, separator='=')
-  file_abs_path = File.expand_path(file)
-  if !File.exists? file_abs_path
-    return [];
-  end
-  generated_key_values = {}
-  skip_line_start_symbols = ["#", "/"]
-  File.foreach(file_abs_path) do |line|
-    next if skip_line_start_symbols.any? { |symbol| line =~ /^\s*#{symbol}/ }
-    plugin = line.split(pattern=separator)
-    if plugin.length == 2
-      podname = plugin[0].strip()
-      path = plugin[1].strip()
-      podpath = File.expand_path("#{path}", file_abs_path)
-      generated_key_values[podname] = podpath
-    else
-      puts "Invalid plugin specification: #{line}"
-    end
-  end
-  generated_key_values
-end
-
-target 'Runner' do
-  # Flutter Pod
-
-  copied_flutter_dir = File.join(__dir__, 'Flutter')
-  copied_framework_path = File.join(copied_flutter_dir, 'Flutter.framework')
-  copied_podspec_path = File.join(copied_flutter_dir, 'Flutter.podspec')
-  unless File.exist?(copied_framework_path) && File.exist?(copied_podspec_path)
-    # Copy Flutter.framework and Flutter.podspec to Flutter/ to have something to link against if the xcode backend script has not run yet.
-    # That script will copy the correct debug/profile/release version of the framework based on the currently selected Xcode configuration.
-    # CocoaPods will not embed the framework on pod install (before any build phases can generate) if the dylib does not exist.
-
-    generated_xcode_build_settings_path = File.join(copied_flutter_dir, 'Generated.xcconfig')
-    unless File.exist?(generated_xcode_build_settings_path)
-      raise "Generated.xcconfig must exist. If you're running pod install manually, make sure flutter pub get is executed first"
-    end
-    generated_xcode_build_settings = parse_KV_file(generated_xcode_build_settings_path)
-    cached_framework_dir = generated_xcode_build_settings['FLUTTER_FRAMEWORK_DIR'];
-
-    unless File.exist?(copied_framework_path)
-      FileUtils.cp_r(File.join(cached_framework_dir, 'Flutter.framework'), copied_flutter_dir)
-    end
-    unless File.exist?(copied_podspec_path)
-      FileUtils.cp(File.join(cached_framework_dir, 'Flutter.podspec'), copied_flutter_dir)
-    end
-  end
-
-  # Keep pod path relative so it can be checked into Podfile.lock.
-  pod 'Flutter', :path => 'Flutter'
-
-  # Plugin Pods
-
-  # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
-  # referring to absolute paths on developers' machines.
-  system('rm -rf .symlinks')
-  system('mkdir -p .symlinks/plugins')
-  plugin_pods = parse_KV_file('../.flutter-plugins')
-  plugin_pods.each do |name, path|
-    symlink = File.join('.symlinks', 'plugins', name)
-    File.symlink(path, symlink)
-    pod name, :path => File.join(symlink, 'ios')
-  end
-end
-
-post_install do |installer|
-  installer.pods_project.targets.each do |target|
-    target.build_configurations.each do |config|
-      config.build_settings['ENABLE_BITCODE'] = 'NO'
-    end
-  end
-end

dialer/packages/mobile_number/example/ios/Runner.xcodeproj/project.pbxproj

@@ -1,506 +0,0 @@
-// !$*UTF8*$!
-{
-	archiveVersion = 1;
-	classes = {
-	};
-	objectVersion = 46;
-	objects = {
-
-/* Begin PBXBuildFile section */
-		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
-		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
-		3B80C3941E831B6300D905FE /* App.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 3B80C3931E831B6300D905FE /* App.framework */; };
-		3B80C3951E831B6300D905FE /* App.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 3B80C3931E831B6300D905FE /* App.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
-		9705A1C61CF904A100538489 /* Flutter.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 9740EEBA1CF902C7004384FC /* Flutter.framework */; };
-		9705A1C71CF904A300538489 /* Flutter.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 9740EEBA1CF902C7004384FC /* Flutter.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
-		9740EEB41CF90195004384FC /* Debug.xcconfig in Resources */ = {isa = PBXBuildFile; fileRef = 9740EEB21CF90195004384FC /* Debug.xcconfig */; };
-		978B8F6F1D3862AE00F588F7 /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = 7AFFD8EE1D35381100E5BB4D /* AppDelegate.m */; };
-		97C146F31CF9000F007C117D /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 97C146F21CF9000F007C117D /* main.m */; };
-		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
-		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
-		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
-/* End PBXBuildFile section */
-
-/* Begin PBXCopyFilesBuildPhase section */
-		9705A1C41CF9048500538489 /* Embed Frameworks */ = {
-			isa = PBXCopyFilesBuildPhase;
-			buildActionMask = 2147483647;
-			dstPath = "";
-			dstSubfolderSpec = 10;
-			files = (
-				3B80C3951E831B6300D905FE /* App.framework in Embed Frameworks */,
-				9705A1C71CF904A300538489 /* Flutter.framework in Embed Frameworks */,
-			);
-			name = "Embed Frameworks";
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-/* End PBXCopyFilesBuildPhase section */
-
-/* Begin PBXFileReference section */
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-   version = "1.0">
-   <FileRef
-      location = "group:Runner.xcodeproj">
-   </FileRef>
-</Workspace>

dialer/packages/mobile_number/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -1,93 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "0910"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
-               BuildableName = "Runner.app"
-               BlueprintName = "Runner"
-               ReferencedContainer = "container:Runner.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
-      shouldUseLaunchSchemeArgsEnv = "YES">
-      <Testables>
-      </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
-            BuildableName = "Runner.app"
-            BlueprintName = "Runner"
-            ReferencedContainer = "container:Runner.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </TestAction>
-   <LaunchAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      debugServiceExtension = "internal"
-      allowLocationSimulation = "YES">
-      <BuildableProductRunnable
-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
-            BuildableName = "Runner.app"
-            BlueprintName = "Runner"
-            ReferencedContainer = "container:Runner.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      buildConfiguration = "Profile"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      debugDocumentVersioning = "YES">
-      <BuildableProductRunnable
-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
-            BuildableName = "Runner.app"
-            BlueprintName = "Runner"
-            ReferencedContainer = "container:Runner.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>

dialer/packages/mobile_number/example/ios/Runner.xcworkspace/contents.xcworkspacedata

@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Workspace
-   version = "1.0">
-   <FileRef
-      location = "group:Runner.xcodeproj">
-   </FileRef>
-</Workspace>

dialer/packages/mobile_number/example/ios/Runner/AppDelegate.h

@@ -1,6 +0,0 @@
-#import <Flutter/Flutter.h>
-#import <UIKit/UIKit.h>
-
-@interface AppDelegate : FlutterAppDelegate
-
-@end

dialer/packages/mobile_number/example/ios/Runner/AppDelegate.m

@@ -1,13 +0,0 @@
-#include "AppDelegate.h"
-#include "GeneratedPluginRegistrant.h"
-
-@implementation AppDelegate
-
-- (BOOL)application:(UIApplication *)application
-    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-  [GeneratedPluginRegistrant registerWithRegistry:self];
-  // Override point for customization after application launch.
-  return [super application:application didFinishLaunchingWithOptions:launchOptions];
-}
-
-@end

dialer/packages/mobile_number/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -1,122 +0,0 @@
-{
-  "images" : [
-    {
-      "size" : "20x20",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-20x20@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "20x20",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-20x20@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-40x40@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-40x40@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "60x60",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-60x60@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "60x60",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-60x60@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "20x20",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-20x20@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "20x20",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-20x20@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-29x29@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-29x29@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-40x40@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-40x40@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "76x76",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-76x76@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "76x76",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-76x76@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "83.5x83.5",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-83.5x83.5@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "1024x1024",
-      "idiom" : "ios-marketing",
-      "filename" : "Icon-App-1024x1024@1x.png",
-      "scale" : "1x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}

dialer/packages/mobile_number/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json

@@ -1,23 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "universal",
-      "filename" : "LaunchImage.png",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "universal",
-      "filename" : "LaunchImage@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "universal",
-      "filename" : "LaunchImage@3x.png",
-      "scale" : "3x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}

dialer/packages/mobile_number/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md

@@ -1,5 +0,0 @@
-# Launch Screen Assets
-
-You can customize the launch screen with your own desired assets by replacing the image files in this directory.
-
-You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.

dialer/packages/mobile_number/example/ios/Runner/Base.lproj/LaunchScreen.storyboard

@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
-    <dependencies>
-        <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="EHf-IW-A2E">
-            <objects>
-                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
-                    <layoutGuides>
-                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
-                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
-                    </layoutGuides>
-                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <subviews>
-                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
-                            </imageView>
-                        </subviews>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <constraints>
-                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
-                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
-                        </constraints>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="53" y="375"/>
-        </scene>
-    </scenes>
-    <resources>
-        <image name="LaunchImage" width="168" height="185"/>
-    </resources>
-</document>

dialer/packages/mobile_number/example/ios/Runner/Base.lproj/Main.storyboard

@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
-    <dependencies>
-        <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
-    </dependencies>
-    <scenes>
-        <!--Flutter View Controller-->
-        <scene sceneID="tne-QT-ifu">
-            <objects>
-                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
-                    <layoutGuides>
-                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
-                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
-                    </layoutGuides>
-                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
-                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
-            </objects>
-        </scene>
-    </scenes>
-</document>

dialer/packages/mobile_number/example/ios/Runner/Info.plist

@@ -1,45 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>CFBundleDevelopmentRegion</key>
-	<string>en</string>
-	<key>CFBundleExecutable</key>
-	<string>$(EXECUTABLE_NAME)</string>
-	<key>CFBundleIdentifier</key>
-	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundleName</key>
-	<string>Icing Dialer</string>
-	<key>CFBundlePackageType</key>
-	<string>APPL</string>
-	<key>CFBundleShortVersionString</key>
-	<string>$(FLUTTER_BUILD_NAME)</string>
-	<key>CFBundleSignature</key>
-	<string>????</string>
-	<key>CFBundleVersion</key>
-	<string>$(FLUTTER_BUILD_NUMBER)</string>
-	<key>LSRequiresIPhoneOS</key>
-	<true/>
-	<key>UILaunchStoryboardName</key>
-	<string>LaunchScreen</string>
-	<key>UIMainStoryboardFile</key>
-	<string>Main</string>
-	<key>UISupportedInterfaceOrientations</key>
-	<array>
-		<string>UIInterfaceOrientationPortrait</string>
-		<string>UIInterfaceOrientationLandscapeLeft</string>
-		<string>UIInterfaceOrientationLandscapeRight</string>
-	</array>
-	<key>UISupportedInterfaceOrientations~ipad</key>
-	<array>
-		<string>UIInterfaceOrientationPortrait</string>
-		<string>UIInterfaceOrientationPortraitUpsideDown</string>
-		<string>UIInterfaceOrientationLandscapeLeft</string>
-		<string>UIInterfaceOrientationLandscapeRight</string>
-	</array>
-	<key>UIViewControllerBasedStatusBarAppearance</key>
-	<false/>
-</dict>
-</plist>

dialer/packages/mobile_number/example/ios/Runner/main.m

@@ -1,9 +0,0 @@
-#import <Flutter/Flutter.h>
-#import <UIKit/UIKit.h>
-#import "AppDelegate.h"
-
-int main(int argc, char* argv[]) {
-  @autoreleasepool {
-    return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
-  }
-}

dialer/packages/mobile_number/example/lib/main.dart

@@ -1,78 +0,0 @@
-import 'dart:async';
-
-import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
-import 'package:mobile_number/mobile_number.dart';
-
-void main() => runApp(MyApp());
-
-class MyApp extends StatefulWidget {
-  @override
-  _MyAppState createState() => _MyAppState();
-}
-
-class _MyAppState extends State<MyApp> {
-  String _mobileNumber = '';
-  List<SimCard> _simCard = <SimCard>[];
-
-  @override
-  void initState() {
-    super.initState();
-    MobileNumber.listenPhonePermission((isPermissionGranted) {
-      if (isPermissionGranted) {
-        initMobileNumberState();
-      } else {}
-    });
-
-    initMobileNumberState();
-  }
-
-  // Platform messages are asynchronous, so we initialize in an async method.
-  Future<void> initMobileNumberState() async {
-    if (!await MobileNumber.hasPhonePermission) {
-      await MobileNumber.requestPhonePermission;
-      return;
-    }
-    // Platform messages may fail, so we use a try/catch PlatformException.
-    try {
-      _mobileNumber = (await MobileNumber.mobileNumber)!;
-      _simCard = (await MobileNumber.getSimCards)!;
-    } on PlatformException catch (e) {
-      debugPrint("Failed to get mobile number because of '${e.message}'");
-    }
-
-    // If the widget was removed from the tree while the asynchronous platform
-    // message was in flight, we want to discard the reply rather than calling
-    // setState to update our non-existent appearance.
-    if (!mounted) return;
-
-    setState(() {});
-  }
-
-  Widget fillCards() {
-    List<Widget> widgets = _simCard
-        .map((SimCard sim) => Text(
-            'Sim Card Number: (${sim.countryPhonePrefix}) - ${sim.number}\nCarrier Name: ${sim.carrierName}\nCountry Iso: ${sim.countryIso}\nDisplay Name: ${sim.displayName}\nSim Slot Index: ${sim.slotIndex}\n\n'))
-        .toList();
-    return Column(children: widgets);
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      home: Scaffold(
-        appBar: AppBar(
-          title: const Text('Plugin example app'),
-        ),
-        body: Center(
-          child: Column(
-            children: <Widget>[
-              Text('Running on: $_mobileNumber\n'),
-              fillCards()
-            ],
-          ),
-        ),
-      ),
-    );
-  }
-}

dialer/packages/mobile_number/example/pubspec.yaml

@@ -1,64 +0,0 @@
-name: mobile_number_example
-description: Demonstrates how to use the mobile_number plugin.
-publish_to: 'none'
-
-environment:
-  sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
-
-dependencies:
-  flutter:
-    sdk: flutter
-
-  # The following adds the Cupertino Icons font to your application.
-  # Use with the CupertinoIcons class for iOS style icons.
-  cupertino_icons: ^0.1.2
-
-dev_dependencies:
-  flutter_test:
-    sdk: flutter
-
-  mobile_number:
-    path: ../
-
-# For information on the generic Dart part of this file, see the
-# following page: https://dart.dev/tools/pub/pubspec
-
-# The following section is specific to Flutter.
-flutter:
-
-  # The following line ensures that the Material Icons font is
-  # included with your application, so that you can use the icons in
-  # the material Icons class.
-  uses-material-design: true
-
-  # To add assets to your application, add an assets section, like this:
-  # assets:
-  #  - images/a_dot_burr.jpeg
-  #  - images/a_dot_ham.jpeg
-
-  # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
-
-  # For details regarding adding assets from package dependencies, see
-  # https://flutter.dev/assets-and-images/#from-packages
-
-  # To add custom fonts to your application, add a fonts section here,
-  # in this "flutter" section. Each entry in this list should have a
-  # "family" key with the font family name, and a "fonts" key with a
-  # list giving the asset and other descriptors for the font. For
-  # example:
-  # fonts:
-  #   - family: Schyler
-  #     fonts:
-  #       - asset: fonts/Schyler-Regular.ttf
-  #       - asset: fonts/Schyler-Italic.ttf
-  #         style: italic
-  #   - family: Trajan Pro
-  #     fonts:
-  #       - asset: fonts/TrajanPro.ttf
-  #       - asset: fonts/TrajanPro_Bold.ttf
-  #         weight: 700
-  #
-  # For details regarding fonts from package dependencies,
-  # see https://flutter.dev/custom-fonts/#from-packages

dialer/packages/mobile_number/example/test/widget_test.dart

@@ -1,27 +0,0 @@
-// This is a basic Flutter widget test.
-//
-// To perform an interaction with a widget in your test, use the WidgetTester
-// utility that Flutter provides. For example, you can send tap and scroll
-// gestures. You can also use WidgetTester to find child widgets in the widget
-// tree, read text, and verify that the values of widget properties are correct.
-
-// import 'package:flutter/material.dart';
-// import 'package:flutter_test/flutter_test.dart';
-
-// import '../../example/lib/main.dart';
-
-void main() {
-  // testWidgets('Verify Platform version', (WidgetTester tester) async {
-  //   // Build our app and trigger a frame.
-  //   await tester.pumpWidget(MyApp());
-
-  //   // Verify that platform version is retrieved.
-  //   expect(
-  //     find.byWidgetPredicate(
-  //       (Widget widget) => widget is Text &&
-  //                          widget.data.startsWith('Running on:'),
-  //     ),
-  //     findsOneWidget,
-  //   );
-  // });
-}

dialer/packages/mobile_number/ios/Classes/MobileNumberPlugin.h

@@ -1,4 +0,0 @@
-#import <Flutter/Flutter.h>
-
-@interface MobileNumberPlugin : NSObject<FlutterPlugin>
-@end

dialer/packages/mobile_number/ios/Classes/MobileNumberPlugin.m

@@ -1,20 +0,0 @@
-#import "MobileNumberPlugin.h"
-
-@implementation MobileNumberPlugin
-+ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
-  FlutterMethodChannel* channel = [FlutterMethodChannel
-      methodChannelWithName:@"mobile_number"
-            binaryMessenger:[registrar messenger]];
-  MobileNumberPlugin* instance = [[MobileNumberPlugin alloc] init];
-  [registrar addMethodCallDelegate:instance channel:channel];
-}
-
-- (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
-  if ([@"getPlatformVersion" isEqualToString:call.method]) {
-    result([@"iOS " stringByAppendingString:[[UIDevice currentDevice] systemVersion]]);
-  } else {
-    result(FlutterMethodNotImplemented);
-  }
-}
-
-@end

dialer/packages/mobile_number/ios/mobile_number.podspec

@@ -1,21 +0,0 @@
-#
-# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html
-#
-Pod::Spec.new do |s|
-  s.name             = 'mobile_number'
-  s.version          = '0.0.1'
-  s.summary          = 'A new flutter plugin project.'
-  s.description      = <<-DESC
-A new flutter plugin project.
-                       DESC
-  s.homepage         = 'http://example.com'
-  s.license          = { :file => '../LICENSE' }
-  s.author           = { 'Your Company' => 'email@example.com' }
-  s.source           = { :path => '.' }
-  s.source_files = 'Classes/**/*'
-  s.public_header_files = 'Classes/**/*.h'
-  s.dependency 'Flutter'
-
-  s.ios.deployment_target = '8.0'
-end
-

dialer/packages/mobile_number/lib/mobile_number.dart

@@ -1,65 +0,0 @@
-import 'dart:async';
-
-import 'package:flutter/services.dart';
-import 'package:flutter/widgets.dart';
-import 'package:mobile_number/sim_card.dart';
-import 'package:mobile_number/widget_lifecycle.dart';
-
-export 'package:mobile_number/sim_card.dart';
-export 'package:mobile_number/widget_lifecycle.dart';
-
-class MobileNumber {
-  static const MethodChannel _channel = const MethodChannel('mobile_number');
-
-  static void listenPhonePermission(
-    Function(bool isPermissionGranted) subscription,
-  ) {
-    WidgetsBinding.instance.addObserver(
-      WidgetLifecycle(
-        resumeCallBack: (() async {
-          if (await MobileNumber.hasPhonePermission) {
-            subscription(true);
-          } else {
-            subscription(false);
-          }
-        }),
-      ),
-    );
-  }
-
-  static Future<bool> get hasPhonePermission async {
-    final bool hasPermission =
-        await _channel.invokeMethod('hasPhonePermission');
-    return hasPermission;
-  }
-
-  static Future<void> get requestPhonePermission async {
-    await _channel.invokeMethod('requestPhonePermission');
-  }
-
-  static Future<String>? get mobileNumber async {
-    final String simCardsJson = await _channel.invokeMethod('getMobileNumber');
-    if (simCardsJson.isEmpty) {
-      return '';
-    }
-    List<SimCard> simCards = SimCard.parseSimCards(simCardsJson);
-    if (simCards.isNotEmpty && simCards[0].number != null) {
-      return simCards[0].countryPhonePrefix! + simCards[0].number!;
-    } else {
-      return '';
-    }
-  }
-
-  static Future<List<SimCard>>? get getSimCards async {
-    final String simCardsJson = await _channel.invokeMethod('getMobileNumber');
-    if (simCardsJson.isEmpty) {
-      return <SimCard>[];
-    }
-    List<SimCard> simCards = SimCard.parseSimCards(simCardsJson);
-    if (simCards.isNotEmpty) {
-      return simCards;
-    } else {
-      return <SimCard>[];
-    }
-  }
-}

dialer/packages/mobile_number/lib/sim_card.dart

@@ -1,43 +0,0 @@
-import 'dart:convert';
-
-class SimCard {
-  final String? carrierName;
-  final String? displayName;
-  final int? slotIndex;
-  final String? number;
-  final String? countryIso;
-  final String? countryPhonePrefix;
-
-  SimCard({
-    this.carrierName,
-    this.displayName,
-    this.slotIndex,
-    this.number,
-    this.countryIso,
-    this.countryPhonePrefix,
-  });
-
-  factory SimCard.fromMap(Map<String, dynamic> json) => SimCard(
-        carrierName: json["carrierName"],
-        displayName: json["displayName"],
-        slotIndex: json["slotIndex"],
-        number: json["number"],
-        countryIso: json["countryIso"],
-        countryPhonePrefix: json["countryPhonePrefix"],
-      );
-
-  Map<String, dynamic> toMap() => {
-        "carrierName": carrierName,
-        "displayName": displayName,
-        "slotIndex": slotIndex,
-        "number": number,
-        "countryIso": countryIso,
-        "countryPhonePrefix": countryPhonePrefix,
-      };
-
-  static List<SimCard> parseSimCards(String str) =>
-      List<SimCard>.from(json.decode(str).map((x) => SimCard.fromMap(x)));
-
-  static String simCardToJson(List<SimCard> data) =>
-      json.encode(List<dynamic>.from(data.map((x) => x.toMap())));
-}

dialer/packages/mobile_number/lib/widget_lifecycle.dart

@@ -1,30 +0,0 @@
-import 'package:flutter/foundation.dart';
-import 'package:flutter/widgets.dart';
-
-class WidgetLifecycle extends WidgetsBindingObserver {
-  final AsyncCallback? resumeCallBack;
-  final AsyncCallback? suspendingCallBack;
-
-  WidgetLifecycle({
-    this.resumeCallBack,
-    this.suspendingCallBack,
-  });
-
-  @override
-  Future<Null> didChangeAppLifecycleState(AppLifecycleState state) async {
-    switch (state) {
-      case AppLifecycleState.resumed:
-        if (resumeCallBack != null) {
-          await resumeCallBack!();
-        }
-        break;
-      case AppLifecycleState.inactive:
-      case AppLifecycleState.paused:
-      case AppLifecycleState.detached:
-        if (suspendingCallBack != null) {
-          await suspendingCallBack!();
-        }
-        break;
-    }
-  }
-}

dialer/packages/mobile_number/local.properties

@@ -1,9 +0,0 @@
-## This file must *NOT* be checked into Version Control Systems,
-# as it contains information specific to your local configuration.
-#
-# Location of the SDK. This is only used by Gradle.
-# For customization when using a Version Control System, please read the
-# header note.
-#Mon Jun 03 03:03:49 EET 2019
-ndk.dir=D\:\\Programming\\Android\\Tools\\Android_SDK\\ndk-bundle
-sdk.dir=D\:\\Programming\\Android\\Tools\\Android_SDK