Flutter - No implementation found for method "sendCustomData" on channel com.mobile.app/customChannel

for a job I need to call Custom MethodChannel and get information from Android native code, but I get the error "No implementation found for method "sendCustomData" on channel com.mobile.app/customChannel".

My code is below:

 class myService implements UserDataCollector { static final myService _singleton = myService._internal(); factory myService() { return _singleton; } final _platform = const MethodChannel('com.mobile.app/customChannel'); myService._internal(); Future<void> sendCustomData( {required String dataType, required Map<String, dynamic> data}) async { if (RemoteConfigController.sendCustomDataToVeloxity) { final encodedJson = jsonEncode(data); _platform.invokeMethod("sendCustomData", { "customData": encodedJson, "customDataType": dataType, }); } } } 

Android :

class MainActivity : FlutterActivity() { private val CHANNEL = "com.mobile.app/customChannel"; override fun configureFlutterEngine(flutterEngine: FlutterEngine) { super.configureFlutterEngine(flutterEngine) GeneratedPluginRegistrant.registerWith(flutterEngine) MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL) .setMethodCallHandler { call: MethodCall, result: MethodChannel.Result -> if (call.method == "sendCustomData") { result.success(true) } else { result.notImplemented() } } } } 

Use

 await veloxityService.sendCustomData(dataType: "send_data", data: {""}); 

note : Namings are examples.

Thanks.