应用程序关闭时报警管理器不工作

本教程将介绍应用程序关闭时报警管理器不工作的处理方法,这篇教程是从别的地方看到的,然后加了一些国外程序员的疑问与解答,希望能对你有所帮助,好了,下面开始学习吧。

应用程序关闭时报警管理器不工作 教程 第1张

问题描述

我已经被困在这个问题上好几天了。
我希望我的闹钟管理器每15分钟触发一次,即使在应用程序关闭时也是如此,但当应用程序关闭时它不起作用。但它可以在应用程序打开时运行。

在我的清单文件中:

  <!-- Used to consume the alarm manager alerts when app clsoed -->
 <receiver
 android:name="biz.customName.pkg.AlarmReceiver"
  android:enabled="true">
  <intent-filter>
<action android:name="biz.customName.pkg.msg"/>
  </intent-filter>
 </receiver>

我的BroadCastReceiver类(AlarmReceiver)

public class AlarmReceiver extends BroadcastReceiver
{

// Alarm manager used to run install when app is closed
AlarmManager alarmManager;


// Called when alarm received
@Override
public void onReceive(Context context, Intent intent)
{

 // Enable alarm
 setupAlarm(context);

 // Perform background task 
}


// Setup alarm
public void setupAlarm(Context context)
{
 // Setup reciever for alarm
  //  context.registerReceiver(this, new IntentFilter("biz.customName.pkg.msg"));

 // Setup pending intent
 PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, new Intent(Loader.filterName), PendingIntent.FLAG_UPDATE_CURRENT);

 // Setup alarm
 alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

 final long triggerTime = System.currentTimeMillis() + 900 * 1000;

 // Newest OS
 if (Build.VERSION.SDK_INT >= 19 && Build.VERSION.SDK_INT < 23)
 {
  alarmManager.setExact(AlarmManager.RTC_WAKEUP, triggerTime, pendingIntent);
 }
 }
}

在Main中,我首先调用Setup Alarm来启动闹钟,然后每次调用我的广播接收器内部的onReceive时,我都会重置闹钟。

关闭应用程序时它无法工作,我做错了什么?

推荐答案

将其添加到您的androidManifest.xml

<service
android:name=".MyService"
android:enabled="true"
android:exported="true" />

<receiver
android:name=".MyAlarmReceiver"
android:enabled="true"
android:exported="true" />

MyAlarmReceiver.java

public class MyAlarmReceiver extends BroadcastReceiver {
Context context;

public MyAlarmReceiver() {
}

@Override
public void onReceive(Context context, Intent intent) {
 intent = new Intent(context, MyService.class);
 context.startService(intent);
}

}

MyService.java

public class MyService extends Service {

@Override
public int onStartCommand(Intent intent, int flags, int startId) {

YourTask();

  return Service.START_STICKY;
}

private void YourTask(){
 // call api in background 

// send push notification 

//etc...
}

@Override
public IBinder onBind(Intent intent) {
 // TODO: Return the communication channel to the service.
 throw new UnsupportedOperationException("Not yet implemented");
}


}

MainActivity.Java

public class MainActivity extends AppCompatActivity {
PendingIntent pendingIntent;
AlarmManager alarmManager;
Intent alarmIntent;

@Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
 AutoUpdateDataInBackground();
 }

 private void AutoUpdateDataInBackground() {
 // Retrieve a PendingIntent that will perform a broadcast

 alarmIntent = new Intent(MainActivity.this, MyReceiver.class);
 pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, alarmIntent, 0);
 alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);

 long interval = 15 * 60 * 1000;

 // Repeating on every 15 minutes interval

 Calendar calendar = Calendar.getInstance();
 alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),interval, pendingIntent);
}

}

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