警报管理器无法正常工作

Question

这段代码有什么问题？我没有收到任何错误并且代码不起作用我该怎么办？

MainActivity.java

Long alertTime = new GregorianCalendar().getTimeInMillis()+5*1000;
    Intent alertIntent = new Intent(MapsActivity.this, MyService.class);
    AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    alarmManager.set(AlarmManager.RTC_WAKEUP, alertTime,
            PendingIntent.getBroadcast(MapsActivity.this, 1, alertIntent,
                    PendingIntent.FLAG_UPDATE_CURRENT));

MyService.java

public class MyService extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
    createNotification(context, "Alarm", "ASDFG", "ASDF");
}

public void createNotification(Context context, String msg, String msgText, String msgAlert) {


    PendingIntent notificIntent = PendingIntent.getActivity(context, 0,
            new Intent(context, MapsActivity.class), 0);

    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(context)
                    .setSmallIcon(R.drawable.searchicon)
                    .setContentTitle(msg)
                    .setTicker(msgAlert)
                    .setContentText(msgText);

    mBuilder.setContentIntent(notificIntent);
    mBuilder.setDefaults(Notification.DEFAULT_SOUND);
    mBuilder.setAutoCancel(true);
    NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    mNotificationManager.notify(1, mBuilder.build());
 }}

顺便说一句，我想在 MainActivity.java 类中的 setOnMyLocationChangeListener 上启动警报和通知 onCreate() 有人可以帮助我在后台运行吗？

Answer 1

我对这个问题的借口我实际上把<receiver android:name=".MyService" ></receiver>放在了AndroidManifest.xml的错误位置它需要在<application></application>标签内。