问唤醒与唤醒的碰撞

EN

public class ServiceWaker implements WakefulIntentService.AlarmListener
{
    private static final Logger log = Logger.getLogger(ServiceWaker.class);

    public ServiceWaker()
    {
        log.info("New ServiceWaker");
    }

    @Override
    public void scheduleAlarms(AlarmManager alarmManager, PendingIntent pendingIntent, Context context)
    {
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
        long syncFrequency = Long.parseLong(prefs.getString("sync_frequency", "1"));
        syncFrequency = syncFrequency * 60 * 1000;

        log.info("Alarm scheduled with a repeat interval:" + syncFrequency);

        alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
                SystemClock.elapsedRealtime()+60000, syncFrequency, pendingIntent);
    }

    @Override
    public void sendWakefulWork(Context context)
    {
        log.info("Sent wakeful work");
        WakefulIntentService.sendWakefulWork(context, CheckServiceWakeful.class);
    }

    @Override
    public long getMaxAge()
    {
        return AlarmManager.INTERVAL_FIFTEEN_MINUTES*2;
    }
}