throwing error in static Future<void> setServiceMethod(Function serviceMethod) while trying to start foreground service

[vaimikpatel2908]

Exception has occurred.
NoSuchMethodError (NoSuchMethodError: The method 'toRawHandle' was called on null.
Receiver: null
Tried calling: toRawHandle())

[RBSoftwareBR]

Same here. any solutions?

[ChangJoo-Park]

Can you reproduce codes?

[pkotowski]

Have the same problem. minSDK 23, max
Added: <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
Added: <service android:name="changjoopark.com.flutter_foreground_plugin.FlutterForegroundService"/>
Added: <uses-sdk android:minSdkVersion="23" tools:overrideLibrary="changjoopark.com.flutter_foreground_plugin" />`

gradle:

compileSdkVersion 28
minSdkVersion 23
targetSdkVersion 28

And error occurs, after copy-paste code from pub.dev:

E/flutter (10022): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: NoSuchMethodError: The method 'toRawHandle' was called on null.
E/flutter (10022): Receiver: null
E/flutter (10022): Tried calling: toRawHandle()
E/flutter (10022): #0 Object.noSuchMethod (dart:core-patch/object_patch.dart:53:5)
E/flutter (10022): #1 FlutterForegroundPlugin.setServiceMethod (package:flutter_foreground_plugin/flutter_foreground_plugin.dart:53:58)
E/flutter (10022): #2 ActivityWidgetState.startForegroundService (package:activity/view/activity/activity.dart:334:35)

[rvgroup]

I also had this error. The called function must be static:

static void _globalForegroundService() {....}

[radheyjat]

Same Error trrigger when call await FlutterForegroundPlugin.setServiceMethod(globalForegroundService);
Without this method working fine but not call onStart & onStop method

[ghost]

I also got the same error, but I moved startForegroundService and globalForegroundService Function to main.dart and it worked.

[willroyMyles]

I got this to work by moving startForegroundServices() outside of main class