feat(android_intent_plus): adds sendService method

packages/android_intent_plus/android/src/main/java/dev/fluttercommunity/plus/androidintent/IntentSender.java

@@ -63,6 +63,23 @@ void send(Intent intent) {
     }
   }
 
+  /** Creates an intent and launches it as a Service. */
+  void sendService(Intent intent) {
+    if (applicationContext == null) {
+      Log.wtf(TAG, "Trying to send an intent before the applicationContext was initialized.");
+      return;
+    }
+
+    Log.v(TAG, "Sending service intent " + intent);
+
+    if (activity != null) {
+      activity.startService(intent);
+    } else {
+      intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+      applicationContext.startService(intent);
+    }
+  }
+
   /**
    * Like with {@code send}, creates and launches an intent with the given params, but wraps the
    * {@code Intent} with {@code Intent.createChooser}.

packages/android_intent_plus/android/src/main/java/dev/fluttercommunity/plus/androidintent/MethodCallHandlerImpl.java

@@ -119,6 +119,9 @@ public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) {
       } else if ("sendBroadcast".equalsIgnoreCase(call.method)) {
         sender.sendBroadcast(intent);
         result.success(null);
+      } else if ("sendService".equalsIgnoreCase(call.method)) {
+        sender.sendService(intent);
+        result.success(null);
       } else if ("canResolveActivity".equalsIgnoreCase(call.method)) {
         result.success(sender.canResolveActivity(intent));
       } else if ("getResolvedActivity".equalsIgnoreCase(call.method)) {

packages/android_intent_plus/example/integration_test/android_intent_plus_test.dart

@@ -85,6 +85,13 @@ void main() {
     await intent.launchChooser('title');
   }, skip: !Platform.isAndroid);
 
+  testWidgets('sendService should not throw', (WidgetTester tester) async {
+    const intent = AndroidIntent(
+      action: 'com.example.service',
+    );
+    await intent.sendService();
+  }, skip: !Platform.isAndroid);
+
   testWidgets('SendBroadcast should not throw', (WidgetTester tester) async {
     const intent = AndroidIntent(
       action: 'com.example.broadcast',

packages/android_intent_plus/lib/android_intent.dart

@@ -179,6 +179,20 @@ class AndroidIntent {
     );
   }
 
+  /// Starts intent as service.
+  ///
+  /// This works only on Android platforms.
+  Future<void> sendService() async {
+    if (!_platform.isAndroid) {
+      return;
+    }
+
+    await _channel.invokeMethod<void>(
+      'sendService',
+      _buildArguments(),
+    );
+  }
+
   /// Sends intent as broadcast.
   ///
   /// This works only on Android platforms.

packages/android_intent_plus/test/android_intent_test.dart

@@ -236,6 +236,20 @@ void main() {
       });
     });
 
+    group('sendService', () {
+      test('start a service', () async {
+        androidIntent = AndroidIntent.private(
+          action: 'com.example.service',
+          channel: mockChannel,
+          platform: FakePlatform(operatingSystem: 'android'),
+        );
+        await androidIntent.sendService();
+        verify(mockChannel.invokeMethod<void>('sendService', <String, Object>{
+          'action': 'com.example.service',
+        }));
+      });
+    });
+
     group('sendBroadcast', () {
       test('send a broadcast', () async {
         androidIntent = AndroidIntent.private(