后台执行的定时任务
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package com.pingyijinren.test; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.Button; public class MainActivity extends AppCompatActivity{ private Button startIntentService; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Intent it=new Intent(this,LongRunningService.class); startService(it); } }
package com.pingyijinren.test; import android.app.AlarmManager; import android.app.PendingIntent; import android.app.Service; import android.content.Intent; import android.os.IBinder; import android.os.SystemClock; import android.util.Log; public class LongRunningService extends Service { public LongRunningService() { } @Override public IBinder onBind(Intent intent) { // TODO: Return the communication channel to the service. throw new UnsupportedOperationException("Not yet implemented"); } @Override public int onStartCommand(Intent intent,int flags,int startId){ new Thread(new Runnable() { @Override public void run() { Log.d("MainActivity","我是子线程"); } }).start(); AlarmManager alarmManager=(AlarmManager)getSystemService(ALARM_SERVICE); long triggerAtTime= SystemClock.elapsedRealtime()+10*1000; Intent it=new Intent(this,AlarmReceiver.class); PendingIntent pi=PendingIntent.getBroadcast(this,0,it,0); alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,triggerAtTime,pi); return super.onStartCommand(intent,flags,startId); } }
package com.pingyijinren.test; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; public class AlarmReceiver extends BroadcastReceiver { public AlarmReceiver() { } @Override public void onReceive(Context context, Intent intent) { // TODO: This method is called when the BroadcastReceiver is receiving // an Intent broadcast. //throw new UnsupportedOperationException("Not yet implemented"); Intent it=new Intent(context,LongRunningService.class); context.startService(it); } }
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