android – 如何取消AlarmManager的报警

我遇到过这样的问题.
Delete alarm from AlarmManager using cancel() – Android

“
我正在尝试使用两种不同的方法创建和删除警报,这两种方法都在应用程序的不同时刻调用.逻辑.

但是,当我调用AlarmManager的cancel()方法时,警报不会被删除.“

为了设置：

            Intent myIntent = new Intent(getApplicationContext(),
                    SessionReceiver.class);
            PendingIntent pendingIntent = PendingIntent.getbroadcast(
                    getApplicationContext(), 1, myIntent, 0);

            AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);

            alarmManager.set(AlarmManager.RTC, Now.getTimeInMillis(),
                    pendingIntent);

要删除：

    AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    Intent myIntent = new Intent(getApplicationContext(),
            SessionReceiver.class);
    PendingIntent pendingIntent = PendingIntent.getbroadcast(
            getApplicationContext(), 0, myIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    alarmManager.cancel(pendingIntent);

但是这并没有删除已注册的警报.
提前致谢.

解决方法:

需要创建PendingIntent,就像启动AlarmManager时一样,看起来主要的问题是你使用的是另一个requestCode(零而不是一个).

为了快速解决,这应该工作：

AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent myIntent = new Intent(getApplicationContext(), SessionReceiver.class);
PendingIntent pendingIntent = PendingIntent.getbroadcast(
                                 getApplicationContext(), 1, myIntent, 0);

alarmManager.cancel(pendingIntent);

要使用PendingIntent.FLAG_UPDATE_CURRENT标志,请参阅以下内容：

设置：

Intent myIntent = new Intent(getApplicationContext(), SessionReceiver.class);
PendingIntent pendingIntent = PendingIntent.getbroadcast(
                                getApplicationContext(), 1, myIntent, 
                                PendingIntent.FLAG_UPDATE_CURRENT);

AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);

alarmManager.set(AlarmManager.RTC, Now.getTimeInMillis(), pendingIntent);

取消：

AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent myIntent = new Intent(getApplicationContext(), SessionReceiver.class);
PendingIntent pendingIntent = PendingIntent.getbroadcast(
                                getApplicationContext(), 1, myIntent, 
                                PendingIntent.FLAG_UPDATE_CURRENT);

alarmManager.cancel(pendingIntent);