java - 闹钟响起后如何终止调用 setAlarm。

Question

我的问题: 一旦闹钟启动，service 就会一次又一次地调用 setAlarms() 方法(每秒 64 次!!)铃声。闹钟响后如何停止调用？

我的代码

TRTimeReminder.class

这是可以设置新闹钟的类。

TRAlarmManager.cancelAlarms(this);  //cancel the the alarm is it's already set

//I have set if..else here
trDb.updateReminder(Value, title, des, date, time);  //update the database row if alarm's updated
trDb.addReminder(title, des, date, time); //otherwise add new entry in database

TRAlarmManager.setAlarms(this);  //set the alarm
setResult(RESULT_OK);

TRAlarmManager.class

public static void setAlarms(Context context) {
    TRDBHelper trDb = new TRDBHelper(context);
    List<TRListFormat> list = trDb.getAllReminders();

    for(TRListFormat reminder : list) {
        Calendar calendar;
        Date date;

        PendingIntent pIntent = createPendingIntent(context, reminder);

        SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy hh:mm aa");

        try{
            date = sdf.parse(reminder.getDate() + " " + reminder.getTime());
            calendar = Calendar.getInstance();
            calendar.setTime(date);

            setAlarm(context, calendar, pIntent);

            Log.d("parsing date", "date parsed");
        }catch(ParseException e){
            e.printStackTrace();
            Log.d("cannot parse", "failure");
        }
        trDb.close();
    }
}

@SuppressLint("NewApi")
public static void setAlarm(Context context, Calendar calendar, PendingIntent pIntent){

    AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
        alarmManager.setExact(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pIntent);

        Log.d("set alarm called", "null");
    }
    else {
        alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pIntent);
        Log.d("set alarm called", "null");
    }
}

public static void cancelAlarms(Context context) {
    TRDBHelper trDb = new TRDBHelper(context);
    List<TRListFormat> list = trDb.getAllReminders();

    if(list != null){
        for(TRListFormat reminder : list){
            PendingIntent pIntent = createPendingIntent(context, reminder);
            AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
            alarmManager.cancel(pIntent);
        }
    }
}

private static PendingIntent createPendingIntent(Context context, TRListFormat format) {

    Intent intent = new Intent(context, TRService.class);
    intent.putExtra("id", format.getId());
    intent.putExtra("title", format.getTitle());
    intent.putExtra("des", format.getDes());
    intent.putExtra("date", format.getDate());
    intent.putExtra("time", format.getTime());

    return PendingIntent.getService(context, format.getId(), intent, PendingIntent.FLAG_UPDATE_CURRENT);
}

'TRService.class'

@Override
public int onStartCommand(Intent intent, int flags, int startId){

    Toast.makeText(getApplicationContext(), "Service Started", Toast.LENGTH_SHORT).show();

    Intent alarmIntent = new Intent(getBaseContext(), TRAlarmScreen.class);
    alarmIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    alarmIntent.putExtras(intent);
    getApplication().startActivity(alarmIntent);

    TRAlarmManager.setAlarms(this);

    return START_STICKY;
}

Answer 1

删除该行

TRAlarmManager.setAlarms(this);

来自TRService的onStartCommand()方法。我相信这就是导致问题的原因。