Method Channel Improvements Done

Author: we-md-s001

android/app/src/main/kotlin/com/webreinvent/vaahflutter/MainActivity.kt

@@ -1,6 +1,30 @@
 package com.webreinvent.vaahflutter
 
+import android.os.Bundle
+import android.widget.Toast
 import io.flutter.embedding.android.FlutterActivity
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.plugin.common.MethodChannel
 
-class MainActivity: FlutterActivity() {
+class MainActivity : FlutterActivity() {
+    private val CHANNEL = "snackbar_channel"
+
+    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
+        super.configureFlutterEngine(flutterEngine)
+
+        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL).setMethodCallHandler { call, result ->
+            if (call.method == "showSnackbar") {
+                showSnackbar()
+                result.success("Snackbar displayed")
+            } else {
+                result.notImplemented()
+            }
+        }
+    }
+
+    private fun showSnackbar() {
+        runOnUiThread {
+            Toast.makeText(this, "This is a test", Toast.LENGTH_SHORT).show()
+        }
+    }
 }

assets/env/develop.json

@@ -17,5 +17,6 @@
   "one_signal_config": null,
   "pusher_config": null,
   "show_debug_panel": true,
+  "method_channel_map": {},
   "debug_panel_color": 3422552064
-}
+}

assets/env/production.json

@@ -17,5 +17,6 @@
   "one_signal_config": null,
   "pusher_config": null,
   "show_debug_panel": false,
+  "method_channel_name": "",
   "debug_panel_color": 3422552064
-}
+}

assets/env/staging.json

@@ -17,5 +17,6 @@
   "one_signal_config": null,
   "pusher_config": null,
   "show_debug_panel": true,
+  "method_channel_name": "",
   "debug_panel_color": 3422552064
-}
+}

lib/vaahextendflutter/env/env.dart

@@ -62,6 +62,7 @@ class EnvironmentConfig {
     this.oneSignalConfig,
     this.pusherConfig,
     required this.showDebugPanel,
+    required this.methodChannelMap,
     required this.debugPanelColor,
   });
 
@@ -82,6 +83,7 @@ class EnvironmentConfig {
   final OneSignalConfig? oneSignalConfig;
   final PusherConfig? pusherConfig;
   final bool showDebugPanel;
+  final Map<String, dynamic> methodChannelMap;
   @JsonKey(fromJson: _colorFromJson, toJson: _colorToJson)
   final Color debugPanelColor;
 
@@ -123,6 +125,7 @@ class EnvironmentConfig {
       pushNotificationsServiceType: PushNotificationsServiceType.none,
       internalNotificationsServiceType: InternalNotificationsServiceType.none,
       showDebugPanel: true,
+      methodChannelMap: {},
       debugPanelColor: Colors.black.withOpacity(0.8),
     );
   }

lib/vaahextendflutter/env/env.g.dart

@@ -0,0 +1,51 @@
+// import 'package:flutter/foundation.dart';
+
+// import 'services/base_service.dart';
+// import 'services/platform_channel_service.dart';
+
+// BasePlatformService get service {
+//   return PlatformChannelService();
+// }
+
+// abstract class PlatformService {
+//   static final BasePlatformService _service = service;
+
+//   /// Invokes a [method] with or without [arguments] present at the native side.
+//   ///
+//   /// Returns a [Future] which completes to one of the following:
+//   ///
+//   /// * on successful invocation, a result (possibly null),
+//   /// * if the invocation failed in the platform plugin, a [PlatformException],
+//   /// * if the method has not been implemented by a platform plugin, a [MissingPluginException].
+//   ///
+//   /// Example:
+//   /// ```dart
+//   /// final int sum = await PlatformService.invokeMethod<int>('getSum', {'a': 10, 'b': 20});
+//   /// print(sum); // 30
+//   /// ```
+//   static Future<T?> invokeMethod<T>(String method, [dynamic arguments]) {
+//     return _service.invokeMethod<T>(method, arguments);
+//   }
+
+//   /// Sets up a [Stream] using the [eventChannelName] with or without [argumetns].
+//   ///
+//   /// Returns a broadcast [Stream] which emits events to listeners as follows:
+//   ///
+//   /// * for every successfull event, a decoded data event (possibly null) is received from the
+//   ///   platform plugin;
+//   /// * for every error event, an error event containing a [PlatformException]
+//   ///   received from the platform plugin.
+//   ///
+//   /// When a stream is activated or deactivated, errors that happen are reported using the
+//   /// [FlutterError] capability. Only when the number of stream listeners increases from 0 to 1 does
+//   /// the stream become active. Deactivation of the stream only occurs when the number of stream
+//   /// listeners drops to zero.
+//   ///
+//   /// Example:
+//   /// ```dart
+//   /// final myStream = PlatformService.getEventStream('com.example.app/battery');
+//   /// ```
+//   static Stream<dynamic> getEventStream(String eventChannelName, [dynamic arguments]) {
+//     return _service.getEventStream(eventChannelName, arguments);
+//   }
+// }

lib/vaahextendflutter/services/platform_service/platform_service.dart

@@ -0,0 +1,4 @@
+abstract class BasePlatformService {
+  Future<T?> invokeMethod<T>(String method, [dynamic arguments]);
+  Stream<dynamic> getEventStream(String eventChannelName, [dynamic arguments]);
+}

lib/vaahextendflutter/services/platform_service/services/base_service.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/services.dart';
+
+import '../../../env/env.dart';
+import 'base_service.dart';
+
+class PlatformChannelService implements BasePlatformService {
+  static final Map<String, EventChannel> _eventChannels = {};
+
+  @override
+  Future<T?> invokeMethod<T>(String method, [dynamic arguments]) async {
+    final String methodChannelName = EnvironmentConfig.getConfig.methodChannelMap[method];
+    final MethodChannel channel = MethodChannel(methodChannelName);
+    try {
+      final result = await channel.invokeMethod<T>(method, arguments);
+      return result;
+    } on MissingPluginException catch (e) {
+      if (channel.name.isEmpty) {
+        throw 'Please provide correct method_channel_name in env config: ${e.message}';
+      }
+      throw 'No plugin handler for the method call was found: ${e.message}(${channel.name})';
+    } on PlatformException catch (e) {
+      throw 'Failed to invoke method: ${e.message}';
+    } on Exception catch (_) {
+      rethrow;
+    }
+  }
+
+  @override
+  Stream<dynamic> getEventStream(String eventChannelName, [dynamic arguments]) {
+    if (!_eventChannels.containsKey(eventChannelName)) {
+      _eventChannels[eventChannelName] = EventChannel(eventChannelName);
+    }
+    return _eventChannels[eventChannelName]!.receiveBroadcastStream(arguments);
+  }
+}

lib/vaahextendflutter/services/platform_service/services/platform_channel_service.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 
 import '../../vaahextendflutter/services/notification/internal/notification_view.dart';
 import 'ui/index.dart';
@@ -20,16 +21,32 @@ class HomePage extends StatefulWidget {
 }
 
 class _HomePageState extends State<HomePage> {
+  static const MethodChannel _platform = MethodChannel('snackbar_channel');
+
+  Future<void> _showNativeSnackbar() async {
+    try {
+      final result = await _platform.invokeMethod<String>('showSnackbar');
+      debugPrint("Native Snackbar Response: $result");
+    } on PlatformException catch (e) {
+      debugPrint("Failed to show snackbar: ${e.message}");
+    } on MissingPluginException catch (_) {
+      debugPrint("MethodChannel not implemented on this platform");
+    }
+  }
+
   @override
   void initState() {
     super.initState();
-    // TODO:
-    // increaseOpenCount();
+    // TODO: increaseOpenCount();
   }
 
   @override
   Widget build(BuildContext context) {
     return Scaffold(
+      floatingActionButton: FloatingActionButton(
+        onPressed: _showNativeSnackbar,
+        child: const Icon(Icons.message),
+      ),
       appBar: AppBar(
         actions: const [
           InternalNotificationsBadge(),

lib/views/pages/home.dart

@@ -5,10 +5,10 @@ packages:
     dependency: transitive
     description:
       name: _fe_analyzer_shared
-      sha256: f256b0c0ba6c7577c15e2e4e114755640a875e885099367bf6e012b19314c834
+      sha256: "16e298750b6d0af7ce8a3ba7c18c69c3785d11b15ec83f6dcd0ad2a0009b3cab"
       url: "https://pub.dev"
     source: hosted
-    version: "72.0.0"
+    version: "76.0.0"
   _flutterfire_internals:
     dependency: transitive
     description:
@@ -21,15 +21,15 @@ packages:
     dependency: transitive
     description: dart
     source: sdk
-    version: "0.3.2"
+    version: "0.3.3"
   analyzer:
     dependency: transitive
     description:
       name: analyzer
-      sha256: b652861553cd3990d8ed361f7979dc6d7053a9ac8843fa73820ab68ce5410139
+      sha256: "1f14db053a8c23e260789e9b0980fa27f2680dd640932cae5e1137cce0e46e1e"
       url: "https://pub.dev"
     source: hosted
-    version: "6.7.0"
+    version: "6.11.0"
   args:
     dependency: transitive
     description:
@@ -178,10 +178,10 @@ packages:
     dependency: transitive
     description:
       name: collection
-      sha256: ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a
+      sha256: a1ace0a119f20aabc852d165077c036cd864315bd99b7eaa10a60100341941bf
       url: "https://pub.dev"
     source: hosted
-    version: "1.18.0"
+    version: "1.19.0"
   colorize:
     dependency: "direct main"
     description:
@@ -529,18 +529,18 @@ packages:
     dependency: transitive
     description:
       name: leak_tracker
-      sha256: "3f87a60e8c63aecc975dda1ceedbc8f24de75f09e4856ea27daf8958f2f0ce05"
+      sha256: "7bb2830ebd849694d1ec25bf1f44582d6ac531a57a365a803a6034ff751d2d06"
       url: "https://pub.dev"
     source: hosted
-    version: "10.0.5"
+    version: "10.0.7"
   leak_tracker_flutter_testing:
     dependency: transitive
     description:
       name: leak_tracker_flutter_testing
-      sha256: "932549fb305594d82d7183ecd9fa93463e9914e1b67cacc34bc40906594a1806"
+      sha256: "9491a714cca3667b60b5c420da8217e6de0d1ba7a5ec322fab01758f6998f379"
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.5"
+    version: "3.0.8"
   leak_tracker_testing:
     dependency: transitive
     description:
@@ -569,10 +569,10 @@ packages:
     dependency: transitive
     description:
       name: macros
-      sha256: "0acaed5d6b7eab89f63350bccd82119e6c602df0f391260d0e32b5e23db79536"
+      sha256: "1d9e801cd66f7ea3663c45fc708450db1fa57f988142c64289142c9b7ee80656"
       url: "https://pub.dev"
     source: hosted
-    version: "0.1.2-main.4"
+    version: "0.1.3-main.0"
   matcher:
     dependency: transitive
     description:
@@ -786,7 +786,7 @@ packages:
     dependency: transitive
     description: flutter
     source: sdk
-    version: "0.0.99"
+    version: "0.0.0"
   source_gen:
     dependency: transitive
     description:
@@ -823,10 +823,10 @@ packages:
     dependency: transitive
     description:
       name: stack_trace
-      sha256: "73713990125a6d93122541237550ee3352a2d84baad52d375a4cad2eb9b7ce0b"
+      sha256: "9f47fd3630d76be3ab26f0ee06d213679aa425996925ff3feffdec504931c377"
       url: "https://pub.dev"
     source: hosted
-    version: "1.11.1"
+    version: "1.12.0"
   stream_channel:
     dependency: transitive
     description:
@@ -847,10 +847,10 @@ packages:
     dependency: transitive
     description:
       name: string_scanner
-      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+      sha256: "688af5ed3402a4bde5b3a6c15fd768dbf2621a614950b17f04626c431ab3c4c3"
       url: "https://pub.dev"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.0"
   term_glyph:
     dependency: transitive
     description:
@@ -863,10 +863,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: "5b8a98dafc4d5c4c9c72d8b31ab2b23fc13422348d2997120294d3bac86b4ddb"
+      sha256: "664d3a9a64782fcdeb83ce9c6b39e78fd2971d4e37827b9b06c3aa1edc5e760c"
       url: "https://pub.dev"
     source: hosted
-    version: "0.7.2"
+    version: "0.7.3"
   timezone:
     dependency: "direct main"
     description:
@@ -911,10 +911,10 @@ packages:
     dependency: transitive
     description:
       name: vm_service
-      sha256: "5c5f338a667b4c644744b661f309fb8080bb94b18a7e91ef1dbd343bed00ed6d"
+      sha256: f6be3ed8bd01289b34d679c2b62226f63c0e69f9fd2e50a6b3c1c729a961041b
       url: "https://pub.dev"
     source: hosted
-    version: "14.2.5"
+    version: "14.3.0"
   watcher:
     dependency: transitive
     description: