我用这个来设置警报：

Intent intent =new Intent(AlarmClock.ACTION_SET_ALARM);
                intent.putExtra(AlarmClock.EXTRA_HOUR,settings.getInt("alarmhour", 0));
                intent.putExtra(AlarmClock.EXTRA_MINUTES,(settings.getInt("alarmminute", 0)+2));
                intent.putExtra(AlarmClock.EXTRA_MESSAGE,"Alarm123");
                intent.putExtra(AlarmClock.EXTRA_SKIP_UI, true);
                startActivity(intent);

我想用这个解除警报：

Intent intent1 =new Intent(AlarmClock.ACTION_DISMISS_ALARM);
    SharedPreferences settings = getApplicationContext().getSharedPreferences("PREFS_ALARMTIME", 0);
    intent1.putExtra(AlarmClock.EXTRA_ALARM_SEARCH_MODE, AlarmClock.ALARM_SEARCH_MODE_LABEL);
    intent1.putExtra(AlarmClock.EXTRA_MESSAGE,"Alarm123");
    startActivity(intent1);