[Android]AlarmManager를 이용하여 특정 요일, 시간 마다 알람 울리기.

특정 요일을 선택했으면 선택한 요일에 대해서만 알람을 울리고 선택된 요일이 없으면 설정된 시간에 한번만 알람이 울리도록 합니다. 전체적인 코드는 블로그에 올려두기 보다는 그냥 했던 방법을 적어 둘려고 합니다.

//알람 등록 및 취소

	private void registAlarm()
	{
		cancelAlarm();
		
		boolean[] week = { false, mTextRepeatSun.isSelected(), mTextRepeatMon.isSelected(), mTextRepeatTue.isSelected(),
				mTextRepeatWed.isSelected(), mTextRepeatThu.isSelected(), mTextRepeatFri.isSelected(),
				mTextRepeatSat.isSelected() };
		
		boolean isRepeat = false;
		int len = week.length;
		for (int i = 0; i < len; i++)
		{
			if (week[i])
			{
				isRepeat = true;
				break;
			}
		}

		// 알람 등록
		Intent intent = new Intent(this, AlarmReceiver.class);
		
		long triggerTime = 0;
		long intervalTime = 24 * 60 * 60 * 1000;// 24시간
		if(isRepeat)
		{
			intent.putExtra("one_time", false);
			intent.putExtra("day_of_week", week);
			PendingIntent pending = getPendingIntent(intent);
			
			triggerTime = setTriggerTime();
			
			mAlarmManager.setRepeating(AlarmManager.RTC_WAKEUP, triggerTime, intervalTime, pending);
		}
		else
		{
			intent.putExtra("one_time", true);
			PendingIntent pending = getPendingIntent(intent);
			
			triggerTime = setTriggerTime();
			mAlarmManager.set(AlarmManager.RTC_WAKEUP, triggerTime, pending);
		}
		
		showToastMessage(getString(R.string.alarm_time_set_toast));
	}

	private PendingIntent getPendingIntent(Intent intent)
	{
		PendingIntent pIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
		return pIntent;
	}
	
	private void showToastMessage(String message)
	{
		if(mToast == null)
		{
			mToast = Toast.makeText(this, message, Toast.LENGTH_SHORT);
		}
		else
		{
			mToast.setText(message);
		}
		mToast.show();
	}
	
	private long setTriggerTime()
	{
		// current Time
		long atime = System.currentTimeMillis();
		// timepicker
		Calendar curTime = Calendar.getInstance();
		curTime.set(Calendar.HOUR_OF_DAY, this.mAlarmData.getHour(this));
		curTime.set(Calendar.MINUTE, this.mAlarmData.getMinute(this));
		curTime.set(Calendar.SECOND, 0);
		curTime.set(Calendar.MILLISECOND, 0);
		long btime = curTime.getTimeInMillis();
		long triggerTime = btime;
		if (atime > btime)
			triggerTime += 1000 * 60 * 60 * 24;
		
		return triggerTime;
	}

	private void cancelAlarm()
	{
		Intent intent = new Intent(this, AlarmReceiver.class);
		PendingIntent pending = getPendingIntent(intent);
		this.mAlarmManager.cancel(pending);
	}

//AlarmReceiver

public class AlarmReceiver extends BroadcastReceiver
{
	@Override
	public void onReceive(Context context, Intent intent)
	{
		Bundle extra = intent.getExtras();
		if (extra != null)
		{
			boolean isOneTime = extra.getBoolean("one_time");
			if (isOneTime)
			{
				AlarmDataManager.getInstance().setAlarmEnable(context, false);
                                // 알람 울리기.
			}
			else
			{
				boolean[] week = extra.getBooleanArray("day_of_week");

				Calendar cal = Calendar.getInstance();

				if (!week[cal.get(Calendar.DAY_OF_WEEK)])
					return;

                                // 알람 울리기.
			}
		}
	}
}

저는 이와 같이 만들어서 사용합니다.