Android Can'；我们不能安排活动

我读过AlarmManager，并决定制作一个简单的应用程序，它会在特定的时间向我发送通知，但我不明白哪里出了问题。这是我的密码：

主要活动：

public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Calendar calendar = Calendar.getInstance();
    calendar.setTimeInMillis(System.currentTimeMillis());
    calendar.set(Calendar.HOUR_OF_DAY, 23);
    calendar.set(Calendar.MINUTE, 20);
    calendar.set(Calendar.SECOND, 0);
    Intent myIntent = new Intent(MainActivity.this, AlarmReciever.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, myIntent,0);
    AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
    alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,calendar.getTimeInMillis(),AlarmManager.INTERVAL_DAY,pendingIntent);
}}

报警接收器：

public class AlarmReciever extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
    Intent service1 = new Intent(context, MyAlarmService.class);
    context.startService(service1);
}}

和MyAlarmService：

public class MyAlarmService extends Service {
private NotificationManager mManager;
@Override
public IBinder onBind(Intent arg0) {
    // TODO Auto-generated method stub
    return null;
}
@Override
public void onCreate() {
    // TODO Auto-generated method stub
    super.onCreate();
    mManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    Notification notification = new Notification.Builder(this)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setContentTitle(getString(R.string.app_name))
            .setAutoCancel(true)
            .setPriority(Notification.PRIORITY_MAX)
            .setDefaults(Notification.DEFAULT_VIBRATE)
            .build();

    mManager.notify(1, notification);
    return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
    // TODO Auto-generated method stub
    super.onDestroy();
}}

AndroidManifest：

<?xml version="1.0" encoding="utf-8"?>

提前谢谢

public class AlarmReciever extends BroadcastReceiver

一定是

public class AlarmReciever extends WakefullBroadcastReceiver

然后在接收时调用

onReceive

Intent service1 = new Intent(context, MyAlarmService.class);
startWakefulService(service1);

---

乐意效劳。

Intent service1 = new Intent(context, MyAlarmService.class);
startWakefulService(service1);