com.android.deskclock.ALARM_ALERT不工作

<uses-permission android:name="com.android.alarm.permission.SET_ALARM" />

AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent("com.android.deskclock.ALARM_ALERT");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);

// 设置闹钟提醒时间
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, hour);
calendar.set(Calendar.MINUTE, minute);

// 设置闹钟
alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);