All geek questions in one place

Android AlarmManager does not work when the phone is sleeping

I have a problem with AlarmManager.

In short, I plan on alarmManager:

Intent intent = new Intent(context, MyActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
alarmManager.setExact(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + delayInMs, pendingIntent);

And MyActivity appears at the specified time. Just when the device is connected. It also works when it is in my pocket, or when the delay is a few minutes. But when I install alarmManager until night, it will not work in the morning. However, it will work as soon as I take the phone or unlock the screen.

So, I suppose this is due to the hibernation of the device, but how to solve this problem?

1) I added a log to each myActivity method, and I'm sure no one is called before I manually wake the device. 2) I tried PowerManagement wake lock (with WAKE_LOCK permission in the manifest), but nothing changed:

alarmManager.setExact(.........);
wakeLock = ((PowerManager)contexte.getSystemService(Context.POWER_SERVICE)).newWakeLock(PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK, "MyActivity");
wakeLock.acquire();

, ! , ...

EDIT Dec 04'16: , , wakeLock onReceive. , . , 35 , onReceive . , , 9:00, onReceive 9:46, , . :

Intent intent = new Intent("com.blah.something.ALARM_RECEIVED");
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_ONE_SHOT);
AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
alarmManager.cancel(pendingIntent);
alarmManager.setExact(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + delayInMs, pendingIntent);

, , " onReceive", - . , , .

. 05'16: , , onReceive, : onReceive , . wakefulBroadcastReceiver, , . , wakefulBroadcastReceiver , onReceive . , onReceive ? ... , Sony. , , .

EDIT Dec 11'16: , , , ... , 5 (onReceive alarmManager 5 ), , ... , , , 30 , . ( , , ). , . , .

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.par.hasard.mysimpleapplication">
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:name="com.par.hasard.mysimpleapplication.MySimpleReceiver">
            <intent-filter android:priority="1">
                <action android:name="com.par.hasard.mysimpleapplication.REGULAR_ALARM" />
            </intent-filter>
        </receiver>
    </application>
</manifest>

MainActivity.java

package com.par.hasard.mysimpleapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button button = (Button)findViewById(R.id.myExportButton);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                MyLogManager.copyLogToClipboard(view.getContext());
                MyLogManager.emptyLogFile(view.getContext());
            }
        });
        try {
            MyLogManager.createLogFile(this);
            MyLogManager.write(this, "Application launched\n");
            MyAlarmPlanner.planAlarm(this);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

MySimpleReceiver.java

package com.par.hasard.mysimpleapplication;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class MySimpleReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        try {
            MyLogManager.write(context, "Beginning of onReceive\n");
            MyAlarmPlanner.planAlarm(context);
            MyLogManager.write(context, "End of onReceive\n");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

MyAlarmPlanner.java

package com.par.hasard.mysimpleapplication;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.SystemClock;
import java.io.IOException;

public class MyAlarmPlanner {
    public static void planAlarm(Context context) throws IOException {
        MyLogManager.write(context, "Beginning of alarm planning\n");
        AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
        Intent intent = new Intent("com.par.hasard.mysimpleapplication.REGULAR_ALARM");
        PendingIntent pendingIntent =  PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
        alarmManager.cancel(pendingIntent);
        alarmManager.setExact(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 300000, pendingIntent);
        MyLogManager.write(context, "End of alarm planning\n");
    }
}

, MyLogManager.java , .

:

12/12 15h33m23s380 => Beginning of onReceive
12/12 15h33m23s381 => Beginning of alarm planning
12/12 15h33m23s383 => End of alarm planning
12/12 15h33m23s384 => End of onReceive
12/12 15h38m24s337 => Beginning of onReceive
12/12 15h38m24s339 => Beginning of alarm planning
12/12 15h38m24s375 => End of alarm planning
12/12 15h38m24s376 => End of onReceive
12/12 15h43m24s375 => Beginning of onReceive
12/12 15h43m24s376 => Beginning of alarm planning
12/12 15h43m24s380 => End of alarm planning
12/12 15h43m24s381 => End of onReceive
12/12 15h48m25s301 => Beginning of onReceive
12/12 15h48m25s304 => Beginning of alarm planning
12/12 15h48m25s307 => End of alarm planning
12/12 15h48m25s308 => End of onReceive
12/12 15h53m25s316 => Beginning of onReceive
12/12 15h53m25s318 => Beginning of alarm planning
12/12 15h53m25s328 => End of alarm planning
12/12 15h53m25s329 => End of onReceive
12/12 15h58m25s328 => Beginning of onReceive
12/12 15h58m25s329 => Beginning of alarm planning
12/12 15h58m25s331 => End of alarm planning
12/12 15h58m25s333 => End of onReceive
12/12 16h3m26s336 => Beginning of onReceive
12/12 16h3m26s351 => Beginning of alarm planning
12/12 16h3m26s379 => End of alarm planning
12/12 16h3m26s380 => End of onReceive
12/12 16h8m26s397 => Beginning of onReceive
12/12 16h8m26s401 => Beginning of alarm planning
12/12 16h8m26s404 => End of alarm planning
12/12 16h8m26s405 => End of onReceive
12/12 16h13m26s406 => Beginning of onReceive
12/12 16h13m26s407 => Beginning of alarm planning
12/12 16h13m26s410 => End of alarm planning
12/12 16h13m26s411 => End of onReceive
12/12 16h18m27s328 => Beginning of onReceive
12/12 16h18m27s329 => Beginning of alarm planning
12/12 16h18m27s346 => End of alarm planning
12/12 16h18m27s348 => End of onReceive
12/12 16h23m28s298 => Beginning of onReceive
12/12 16h23m28s299 => Beginning of alarm planning
12/12 16h23m28s303 => End of alarm planning
12/12 16h23m28s304 => End of onReceive
12/12 16h28m29s308 => Beginning of onReceive
12/12 16h28m29s310 => Beginning of alarm planning
12/12 16h28m29s323 => End of alarm planning
12/12 16h28m29s324 => End of onReceive
12/12 16h33m29s339 => Beginning of onReceive
12/12 16h33m29s340 => Beginning of alarm planning
12/12 16h33m29s355 => End of alarm planning
12/12 16h33m29s361 => End of onReceive
12/12 16h38m29s356 => Beginning of onReceive
12/12 16h38m29s357 => Beginning of alarm planning
12/12 16h38m29s360 => End of alarm planning
12/12 16h38m29s361 => End of onReceive
12/12 16h43m29s364 => Beginning of onReceive
12/12 16h43m29s365 => Beginning of alarm planning
12/12 16h43m29s367 => End of alarm planning
12/12 16h43m29s369 => End of onReceive
12/12 16h48m29s376 => Beginning of onReceive
12/12 16h48m29s380 => Beginning of alarm planning
12/12 16h48m29s390 => End of alarm planning
12/12 16h48m29s394 => End of onReceive
12/12 16h53m29s392 => Beginning of onReceive
12/12 16h53m29s394 => Beginning of alarm planning
12/12 16h53m29s402 => End of alarm planning
12/12 16h53m29s403 => End of onReceive
12/12 17h43m33s986 => Beginning of onReceive      //problem, the 16'58 onReceive wasn't called
12/12 17h43m33s988 => Beginning of alarm planning
12/12 17h43m33s996 => End of alarm planning
12/12 17h43m34s4 => End of onReceive
12/12 17h48m34s535 => Beginning of onReceive
12/12 17h48m34s536 => Beginning of alarm planning
12/12 17h48m34s539 => End of alarm planning
12/12 17h48m34s540 => End of onReceive
12/12 18h29m49s635 => Beginning of onReceive     //the moment I turned on my device
12/12 18h29m49s648 => Beginning of alarm planning
12/12 18h29m49s667 => End of alarm planning
12/12 18h29m49s668 => End of onReceive

- , ?

+4
3

CommonsWare ! - (https://developer.android.com/training/monitoring-device-state/doze-standby.html) , Android 6.0, AlarmManager , . setExact setExactAndAllowWhileIdle. , . , CommonsWare: sendWakefulWork cwac-wakeful-1.1.0

+3

- AlarmManager BroadcastReceiver . wakelock , BroadcastReceiver, IntentService, BroadcastReceiver.

:

Intent intent = new Intent(context, MyActivityReceiver.class);

:

package com.yourpackage (change this to your package)

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class MyActivityReceiver extends BroadcastReceiver {
    public static final int REQUEST_CODE = 0; //only necessary if you have more receivers 

    // when the alarm is triggered
    @Override
    public void onReceive(Context context, Intent intent) {
    wakeLock = ((PowerManager)contexte.getSystemService(Context.POWER_SERVICE)).newWakeLock(PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK, "MyActivity");
    wakeLock.acquire();
    Intent i = new Intent(context, MyActivity.class);
    context.startService(i);
    }
}

:

<receiver
            android:name="service.TimeService"
            android:enabled="true"
            android:exported="false"
            >
</receiver>

, WakefulService.

0

AlarmManager api android . -

  • ( )
  • Android /

, , -

  • Create an alarm that has the intention of broadcasting, and then add a listener to this broadcast to perform the necessary actions.

Like this -

Intent intent = new Intent("com.blah.something.ALARM_RECIEVED");
PendingIntent pendingIntent =  PendingIntent.getBroadcast(context, requestCode, intent, PendingIntent.FLAG_ONE_SHOT);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Html5Activity.ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC, triggerTimeInMillis, pendingIntent);

manifest file -

<receiver android:name=".receiver.BackgroundScheduledAlarmReceiver">
     <intent-filter android:priority="1">
          <action android:name="com.blah.something.ALARM_RECIEVED" />
     </intent-filter>
</receiver>
  1. Save alarms in sqlite or somewhere (not shown here) and recreate them when the device reboots by listening to the device boot as follows:

manifest file -

<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
...
<receiver
    android:name=".receiver.RecreateAlarmsAtBootReceiver"
    android:enabled="true"
    android:exported="true"
    android:label="RecreateAlarmsAtBootReceiver">
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
        <action android:name="android.intent.action.QUICKBOOT_POWERON" />
    </intent-filter>
</receiver>

The RecreateAlarmsAtBootReceiverread the sqlite, keeping the alarms, and then add them to the dispatcher alarm.

0
source

Source: https://habr.com/ru/post/1662455/

More articles:


All Articles