while i am using "android_alarm_manager_plus", I failed it to create "createAlarm" in the callback function

[boziyoung]

can you tell me what i should do ? please

Reproducible code：

import 'package:flutter/material.dart';
// ignore: depend_on_referenced_packages
import 'package:android_alarm_manager_plus/android_alarm_manager_plus.dart';
import 'package:flutter_alarm_clock/flutter_alarm_clock.dart';

void main() async {
  // initialize AlarmClockManager service

  runApp(const MyApp());
  await AndroidAlarmManager.initialize();
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  //  定时器任务
  // Future<void> main() async {
  //   final int periodicId = 0;
  //   final int oneshotId = 0;
  //   final int oneshotAtId = 0;

  //   print("main alarm run");

  // }

  bool isOn = false;
  bool edit = true;
  int alarmId = 1;
  TextEditingController hc = TextEditingController();
  TextEditingController mc = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            TextField(
              enabled: edit,
              keyboardType: TextInputType.number,
              decoration: InputDecoration(
                labelText: "Hour",
              ),
              controller: hc,
            ),
            TextField(
              enabled: edit,
              keyboardType: TextInputType.number,
              decoration: InputDecoration(
                labelText: "minutes",
              ),
              controller: mc,
            ),
            Transform.scale(
              scale: 2,
              child: Switch(
                  value: isOn,
                  onChanged: ((value) {
                    setState(() {
                      isOn = value;
                      edit = !edit;
                    });
                    if (isOn == true) {
                      var h = hc.text;
                      var m = mc.text;
                      print("$h $m");
                      AndroidAlarmManager.oneShotAt(
                        DateTime(2022, 09, 26, int.parse(h), int.parse(m), 00),
                        alarmId,
                        setAlarmClock,
                        // () => FlutterAlarmClock.createAlarm(23, 59),
// your code
                      );
                    } else {
                      AndroidAlarmManager.cancel(alarmId);
                      print('Alarm Timer Canceled');
                    }
                  })),
            ),
            TextButton(
                onPressed: () {
                  setAlarmClock();
                  // FlutterAlarmClock.createAlarm(23, 59);
                },
                child: const Text("clock"))
          ],
        ),
      ),
      // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}

void setAlarmClock() {
  print('Alarm Fired at ${DateTime.now()}');
  FlutterAlarmClock.createAlarm(23, 59);
}

issue：

E/MethodChannel#flutter_alarm_clock(26487): Failed to handle method call
E/MethodChannel#flutter_alarm_clock(26487): kotlin.UninitializedPropertyAccessException: lateinit property activity has not been initialized
E/MethodChannel#flutter_alarm_clock(26487): at tech.sebastjanmevlja.flutter_alarm_clock.FlutterAlarmClockPlugin.createAlarm(FlutterAlarmClockPlugin.kt:111)
E/MethodChannel#flutter_alarm_clock(26487): at tech.sebastjanmevlja.flutter_alarm_clock.FlutterAlarmClockPlugin.onMethodCall(FlutterAlarmClockPlugin.kt:57)
E/MethodChannel#flutter_alarm_clock(26487): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:262)
E/MethodChannel#flutter_alarm_clock(26487): at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:295)
E/MethodChannel#flutter_alarm_clock(26487): at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger(DartMessenger.java:319)
E/MethodChannel#flutter_alarm_clock(26487): at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(Unknown Source:12)
E/MethodChannel#flutter_alarm_clock(26487): at android.os.Handler.handleCallback(Handler.java:938)
E/MethodChannel#flutter_alarm_clock(26487): at android.os.Handler.dispatchMessage(Handler.java:99)
E/MethodChannel#flutter_alarm_clock(26487): at android.os.Looper.loopOnce(Looper.java:233)
E/MethodChannel#flutter_alarm_clock(26487): at android.os.Looper.loop(Looper.java:344)
E/MethodChannel#flutter_alarm_clock(26487): at android.app.ActivityThread.main(ActivityThread.java:8212)
E/MethodChannel#flutter_alarm_clock(26487): at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#flutter_alarm_clock(26487): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:584)
E/MethodChannel#flutter_alarm_clock(26487): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1034)
E/flutter (26487): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: PlatformException(error, lateinit property activity has not been initialized, null, kotlin.UninitializedPropertyAccessException: lateinit property activity has not been initialized
E/flutter (26487): at tech.sebastjanmevlja.flutter_alarm_clock.FlutterAlarmClockPlugin.createAlarm(FlutterAlarmClockPlugin.kt:111)
E/flutter (26487): at tech.sebastjanmevlja.flutter_alarm_clock.FlutterAlarmClockPlugin.onMethodCall(FlutterAlarmClockPlugin.kt:57)
E/flutter (26487): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:262)
E/flutter (26487): at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:295)
E/flutter (26487): at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger(DartMessenger.java:319)
E/flutter (26487): at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(Unknown Source:12)
E/flutter (26487): at android.os.Handler.handleCallback(Handler.java:938)
E/flutter (26487): at android.os.Handler.dispatchMessage(Handler.java:99)
E/flutter (26487): at android.os.Looper.loopOnce(Looper.java:233)
E/flutter (26487): at android.os.Looper.loop(Looper.java:344)
E/flutter (26487): at android.app.ActivityThread.main(ActivityThread.java:8212)
E/flutter (26487): at java.lang.reflect.Method.invoke(Native Method)
E/flutter (26487): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:584)
E/flutter (26487): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1034)
E/flutter (26487): )
E/flutter (26487): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:653:7)
E/flutter (26487): #1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:296:18)
E/flutter (26487):
E/flutter (26487):

[mevljas]

Are you trying to run this in the background by any chance?

[boziyoung]

Are you trying to run this in the background by any chance?

yes, i want to achieve the function that if it meets any certain conditions, it can automatically create an alarm clock in the background