Android 定時任務，Android任務

Android 定時任務，Android任務
思路

『2』『3』實現閉環迴圈。

效果

07-13 10:44:45.461  10265-18533/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:44:45 GMT+08:00 201507-13 10:44:50.522  10265-18637/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:44:50 GMT+08:00 201507-13 10:44:55.545  10265-18774/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:44:55 GMT+08:00 201507-13 10:45:00.587  10265-18900/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:45:00 GMT+08:00 201507-13 10:45:05.617  10265-18998/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:45:05 GMT+08:00 201507-13 10:45:10.640  10265-19104/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:45:10 GMT+08:00 201507-13 10:45:15.682  10265-19198/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:45:15 GMT+08:00 201507-13 10:45:20.734  10265-19299/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:45:20 GMT+08:00 201507-13 10:45:25.765  10265-19410/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:45:25 GMT+08:00 201507-13 10:45:30.813  10265-19525/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:45:30 GMT+08:00 201507-13 10:45:35.847  10265-19547/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:45:35 GMT+08:00 201507-13 10:45:40.899  10265-19572/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:45:40 GMT+08:00 201507-13 10:45:45.917  10265-19610/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:45:45 GMT+08:00 201507-13 10:45:50.959  10265-19658/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:45:50 GMT+08:00 201507-13 10:45:55.986  10265-19682/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:45:55 GMT+08:00 201507-13 10:46:01.036  10265-19723/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:46:01 GMT+08:00 201507-13 10:46:06.059  10265-19734/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:46:06 GMT+08:00 201507-13 10:46:11.112  10265-19755/cf.icbd.aboutservice D/CBD﹕ LongRunningService:Mon Jul 13 10:46:11 GMT+08:00 2015

MainActivity.java

public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Intent intent = new Intent(MainActivity.this , LongRunningService.class) ;        startService(intent) ;    }}

LongRunningService.java

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("CBD","LongRunningService:"+new Date().toString()) ;                    }                }        ).start();        AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE) ;        Intent intent1 = new Intent(this, AlarmReceiver.class) ; //觸發廣播，廣播回調此方法，實現迴圈        PendingIntent pendingIntent = PendingIntent.getBroadcast(this,0,intent1,0) ;        long triggerTime = SystemClock.elapsedRealtime() + 5*1000 ; //每隔5秒觸發一次        alarmManager.setExact(AlarmManager.ELAPSED_REALTIME_WAKEUP,triggerTime,pendingIntent);        return super.onStartCommand(intent, flags, startId);    }}

AlarmReceiver.java

public class AlarmReceiver extends BroadcastReceiver {    public AlarmReceiver() {    }    @Override    public void onReceive(Context context, Intent intent) {        Intent i = new Intent(context, LongRunningService.class) ;        context.startService(i) ;    }}

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