[英]Using AlarmManager to run a Service when App is not running
I want to schedule a call to a Service
every X time: 我想每X次安排对Service
的呼叫:
In my activity I created alarm: 在我的活动中,我创建了警报:
// OnCreate()
alarmIntent = new Intent ( this, AlarmReceiver.class );
pendingIntent = PendingIntent.getBroadcast( this.getApplicationContext(), 1, alarmIntent, 0 );
alarmManager = ( AlarmManager ) getSystemService( ALARM_SERVICE );
alarmManager.setRepeating( AlarmManager.RTC_WAKEUP, ( 30 * 1000 ),( 30 * 1000 ), pendingIntent );
and In the Receiver : 并在接收器中:
public class AlarmReceiver extends BroadcastReceiver {
private static final String DEBUG_TAG = "AlarmReceiver";
@Override
public void onReceive(Context context, Intent intent) {
Log.d(DEBUG_TAG, "Recurring alarm; requesting download service.");
// start the download
Intent downloader = new Intent(context, MyService.class);
context.startService(downloader);
}
}
In AndroidManifest.xml
I register it: 我在AndroidManifest.xml
注册了它:
<receiver android:name="com.myapp. AlarmReceiver"></receiver>
It works only when app is running ...How can I schedule that so it work even If user close the app? 它仅在应用程序正在运行时才起作用...我如何安排它,以便即使用户关闭该应用程序也能起作用?
i found this code in internet and it works, may be can help you.
package YourPackage;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.PowerManager;
import android.widget.Toast;
public class Alarm extends BroadcastReceiver
{
@Override
public void onReceive(Context context, Intent intent)
{
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "");
wl.acquire();
// Put here YOUR code.
Toast.makeText(context, "Alarm !!!!!!!!!!", Toast.LENGTH_LONG).show(); // For example
wl.release();
}
public void SetAlarm(Context context)
{
AlarmManager am=(AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
Intent i = new Intent(context, Alarm.class);
PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);
am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(),1000 * 60 * ,pi);
}
public void CancelAlarm(Context context)
{
Intent intent = new Intent(context, Alarm.class);
PendingIntent sender = PendingIntent.getBroadcast(context, 0, intent, 0);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.cancel(sender);
}
}
//Set Alarm from Service:
package YourPackage;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.IBinder;
public class YourService extends Service
{
Alarm alarm = new Alarm();
public void onCreate()
{
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId){
alarm.SetAlarm(YourService.this);
return START_STICKY;
}
public void onStart(Context context,Intent intent, int startId)
{
alarm.SetAlarm(context);
}
@Override
public IBinder onBind(Intent intent)
{
return null;
}
}
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission>
...
<receiver android:name=".AutoStart">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"></action>
</intent-filter>
</receiver>
package YourPackage;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class AutoStart extends BroadcastReceiver
{
Alarm alarm = new Alarm();
@Override
public void onReceive(Context context, Intent intent)
{
if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED"))
{
alarm.SetAlarm(context);
}
}
}
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