在Android中将警报设置为特定日期和时间

Question

请好好看看这个.我正在尝试为特定时间和日期设置闹钟.它似乎没有工作,我真的不知道为什么.

             Calendar cal = Calendar.getInstance();

         cal.setTimeInMillis(System.currentTimeMillis());
         cal.set(Calendar.YEAR, mYear);
         cal.set(Calendar.MONTH,mMonth);
         cal.set(Calendar.DAY_OF_MONTH,mDay);
         cal.set(Calendar.HOUR,mHour);
         cal.set(Calendar.MINUTE,mMinutes);

// where mYear, mMonths, mDay, mHour and mMinutes are int values from the Date and Time picker dialogs respectively

     Intent activate = new Intent(this, Alarm.class);
     PendingIntent alarmIntent = PendingIntent.getBroadcast(this, 0, activate, 0);
     alarms = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
     alarms.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), alarmIntent);

只是为了让你知道,如果我用alerts.set()方法中的System.CurrentTimeInMillis()替换cal.getTimeInMillis(),它就有效.但那显然是我不想要的.谢谢

Answer 1

白痴我!找到了解决方案.我必须先做的就是在获取实例后调用Calendar对象的clear方法.

Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(System.currentTimeMillis());
cal.clear();