各位前辈好，小弟我最近在做一个定时的通知，
定时部份都很正常，但是我想取消这个定时器时，却一直无法取消，
麻烦各位前辈帮帮忙，看看小弟弟我是那里写的有问题，下面是程式码
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PendingIntent pi;
//设定定时器
Activity act = UnityPlayer.currentActivity;
// Schedule the alarm!
AlarmManager am = (AlarmManager)act.getSystemService(Context.ALARM_SERVICE);
Intent ii = new Intent(act, MyAlarmReceiver.class);
ii.putExtra("title", title);
ii.putExtra("content", content);
pi = PendingIntent.getBroadcast(act, ii.hashCode(), ii, 0);
listAMCode.add(ii.hashCode());
am.setRepeating(AlarmManager.RTC_WAKEUP,
System.currentTimeMillis() * 10 * 1000, 10*1000, pi);
//取消定时器
AlarmManager am = (AlarmManager)
UnityPlayer.currentActivity.getSystemService(Context.ALARM_SERVICE);
am.cancel(pi);
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麻烦各位了，感谢!!!