带有BroadcastReceiver和Service的Android AlarmManager无法启动

Question

我正在尝试启动特定日期的服务。我的问题是应该启动服务的意图不会这样做。

这是我应该启动服务的助手

public class AlarmHelper {

public static void createAlarm(Context ctx, TRANSAZIONE_MENSILE tm) {
    int giorniDifferenza = calcolaGiorni(tm.getMonthDay());
    int secondiDifferenza = calcolaSecondi();
    int minutiDifferenza = calcolaMinuti();
    int oreDifferenza = calcolaOre();

    Intent alarmIntent = new Intent(ctx, AlarmService.class);
    alarmIntent.putExtra("secondi", secondiDifferenza);
    alarmIntent.putExtra("minuti", minutiDifferenza);
    alarmIntent.putExtra("ore", oreDifferenza);
    alarmIntent.putExtra("giorni", giorniDifferenza);
    alarmIntent.putExtra("requestCode", tm.getRequestCode());
    ctx.startService(alarmIntent);
}
//other methods not relevant in the process
}

这是AlarmService

public class AlarmService extends Service {

Alarm alarm = new Alarm();

public void onCreate(){
    super.onCreate();
}

@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
    Bundle extras = intent.getExtras();
    int sec = extras.getInt("secondi");
    int min = extras.getInt("minuti");
    int hour = extras.getInt("ore");
    int days = extras.getInt("giorni");
    int requestCode = extras.getInt("requestCode");

    alarm.setAlarm(this, sec, min, hour, days, requestCode);
    return START_STICKY;
}

@Override
public void onStart(Intent intent, int startId) {
    super.onStart(intent, startId);
}

@Override
public void onDestroy(){
    super.onDestroy();
}

@Override
public IBinder onBind(Intent intent)
{
    return null;
}
}

最后这是BroadcastReceiver

public class Alarm extends BroadcastReceiver {

private static final int SECS = 1000;
private static final int MINS = 60000;
private static final int HOURS = 3600000;
private static final int DAYS = 86400000;

@Override
public void onReceive(Context ctx, Intent intent) {
    PowerManager pm = (PowerManager) ctx.getSystemService(Context.POWER_SERVICE);
    PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "");
    wl.acquire();

    //qui metto il codice
    //todo codice
    //prendo il request code
    int requestCode = intent.getIntExtra("requestCode", -1);
    if (requestCode != -1) {
        // cancello l'allarme che si sa mai
        cancelAlarm(ctx, requestCode);
        // ora bisogna anche che la transazione sia salvata
        AlarmHelper.resolveAlarm(ctx, requestCode);
        // ora ricreo l'allarme nuovo per il mese prossimo
        AlarmHelper.restartAlarm(ctx, requestCode);
    }
    wl.release();
}

public void setAlarm(Context ctx, int sec, int min, int hours, int days, int requestCode) {
    AlarmManager am = (AlarmManager) ctx.getSystemService(Context.ALARM_SERVICE);
    Intent i = new Intent(ctx, Alarm.class);
    i.putExtra("requestCode", requestCode);
    PendingIntent pi = PendingIntent.getBroadcast(ctx, requestCode, i, 0);
    int tempoInMilli = 0;
    tempoInMilli += (SECS * sec);
    tempoInMilli += (MINS * min);
    tempoInMilli += (HOURS * hours);
    tempoInMilli += (DAYS * days);
    am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), tempoInMilli, pi);
}

public void cancelAlarm(Context context, int requestCode) {
    Intent intent = new Intent(context, Alarm.class);
    PendingIntent sender = PendingIntent.getBroadcast(context, requestCode, intent, 0);
    AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    alarmManager.cancel(sender);
}
}

意图根本无法到达服务，我该如何解决？任何帮助将不胜感激