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Flutter plugin for accessing the Android AlarmManager service, and running Dart code in the background when alarms fire.

android_alarm_manager_plus #

Flutter Community: android_alarm_manager_plus

pub package pub points android_alarm_manager_plus

A Flutter plugin for accessing the Android AlarmManager service, and running Dart code in the background when alarms fire.

Platform Support #


Getting Started #

After importing this plugin to your project as usual, add the following to your AndroidManifest.xml within the <manifest></manifest> tags:

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<!-- For apps with targetSDK=31 (Android 12) -->
<uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM"/>

Next, within the <application></application> tags, add:

        <action android:name="android.intent.action.BOOT_COMPLETED" />

Then in Dart code add:

import 'package:android_alarm_manager_plus/android_alarm_manager_plus.dart';

// Be sure to annotate your callback function to avoid issues in release mode on Flutter >= 3.3.0
static void printHello() {
  final DateTime now =;
  final int isolateId = Isolate.current.hashCode;
  print("[$now] Hello, world! isolate=${isolateId} function='$printHello'");

main() async {
  // Be sure to add this line if initialize() call happens before runApp()

  await AndroidAlarmManager.initialize();
  final int helloAlarmID = 0;
  await AndroidAlarmManager.periodic(const Duration(minutes: 1), helloAlarmID, printHello);

printHello will then run (roughly) every minute, even if the main app ends. However, printHello will not run in the same isolate as the main application. Unlike threads, isolates do not share memory and communication between isolates must be done via message passing (see more documentation on isolates here).

Using other plugins in alarm callbacks #

If alarm callbacks will need access to other Flutter plugins, including the alarm manager plugin itself, it may be necessary to inform the background service how to initialize plugins depending on which Flutter Android embedding the application is using.


Does this plugin support to invoke a method after reboot? #

From the Android AlarmManager documentation:

Registered alarms are retained while the device is asleep (and can optionally wake the device up if they go off during that time), but will be cleared if it is turned off and rebooted.

My alarm is not firing after force stopping the app #

The Android OS will not fire alarms for apps that have been force stopped.

StackOverflow response:

My alarm is not firing on a specific device #

Likely the device is running some battery optimization software that is preventing the alarm from firing. Check out to find out about more about optimizations done by different vendors.

Plugin Development #

Running Flutter unit tests #

Run normally with flutter test from the root of the project.

Running Espresso tests #

The Espresso test runs the same sample code provided in example/lib/main.dart but is run using the Flutter Espresso plugin.

Modifying the main.dart will cause this test to fail.

This test will call into the example/lib/main_espresso.dart file which will enable Flutter Driver and then calls into the main.dart.

See for more info on why.

To run the test, run from the example/android folder:

./gradlew app:connectedAndroidTest -Ptarget=`pwd`/../lib/main_espresso.dart

Running End-to-end Flutter Driver tests #

To run the Flutter Driver tests, cd into example and run:

flutter driver test_driver/android_alarm_manager_plus_e2e.dart

Learn more #

pub points


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Flutter plugin for accessing the Android AlarmManager service, and running Dart code in the background when alarms fire.

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API reference


Icon for licenses.BSD-3-Clause (LICENSE)




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