Android删除Alarm的方法

先创建闹钟

AlarmManager manager = (AlarmManager)getSystemService(ALARM_SERVICE);
Long seconds = Utils.getseconds(num1,num2,flag);
long triggerAttime = SystemClock.elapsedRealtime()+seconds;
Intent i = new Intent(this,AlarmReceiver.class);
PendingIntent pi = PendingIntent.getBroadcast(this,count1++,i,0);//用count的不同来实现任务不会被覆盖
manager.setExactAndAllowWhileIdle(AlarmManager.ELAPSED_REALTIME_WAKEUP,triggerAttime,pi);

这是删除的方法

Intent intent = new Intent(context, AlarmReceiver.class);   context是当前活动上下文
PendingIntent pendingIntent = PendingIntent.getBroadcast(context,plan.get(position).getCount(),intent,PendingIntent.FLAG_UPDATE_CURRENT);  //第二个参数是requestCode 即要删除闹钟的code。最后一个参数是PendingIntent.FLAG_UPDATE_CURRENT
AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
alarmManager.cancel(pendingIntent); //cancel（）方法删除闹钟