Question

我希望在特定时间取消2个重复闹钟，但应用程序当前决定在您创建闹钟后立即拨打取消。例如，如果您在13:18设置结束重复的时间，则重复警报应重复，直到该时间为止。

以下是我一直在玩的一些代码：

Toast.makeText(this, "Alarm Scheduled for " + midnight, Toast.LENGTH_LONG).show();


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

      Databackon.set(AlarmManager.RTC_WAKEUP,midnight, stoprepeat(V));
    // Databackon.set(AlarmManager.RTC_WAKEUP,midnight, PendingIntent.getBroadcast(this,4,  intent, PendingIntent.FLAG_UPDATE_CURRENT));



     Toast.makeText(this, "THIS " + midnight, Toast.LENGTH_LONG).show();


    /*  
      Button button1=(Button)findViewById(R.id.startupdates);
      button1.setVisibility(View.INVISIBLE);
      Button button2=(Button)findViewById(R.id.stopbutton);
      button2.setVisibility(View.VISIBLE);
    */
}

public PendingIntent stoprepeat(View V)
{
    Intent intent = new Intent(UpdatesActivity.this,AlarmReciever.class);
    PendingIntent pendingIntent =
            PendingIntent.getBroadcast(this,1,  intent, PendingIntent.FLAG_UPDATE_CURRENT);
    AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
    am.cancel(pendingIntent);

    Intent intent2 = new Intent(UpdatesActivity.this,DataOff.class);
    PendingIntent pendingIntent2 =
            PendingIntent.getBroadcast(this,2, intent2,PendingIntent.FLAG_UPDATE_CURRENT);
    AlarmManager am2 = (AlarmManager) getSystemService(ALARM_SERVICE);
    am2.cancel(pendingIntent2);

        Toast.makeText(this, "Repeating Alarm stopped", Toast.LENGTH_LONG).show();

          Button button1=(Button)findViewById(R.id.startupdates);
          button1.setVisibility(View.VISIBLE);
          Button button2=(Button)findViewById(R.id.stopbutton);
          button2.setVisibility(View.INVISIBLE);

        return pendingIntent;
}

Answer 1

你的代码毫无意义。你必须记住三件基本的事情：

所有警报都链接到特定应用程序。
警报功能基于待处理的意图。
取消可以通过与特定Intent匹配来完成。

考虑到这一点，您可以实施以下解决方案。

像往常一样创建基本警报：

Intent myIntent = new Intent(this, Target.class);
PendingIntent pendingIntent = PendingIntent.getService(this, 0, myIntent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
am.set(AlarmManager.RTC_WAKEUP, time, pendingIntent);

创建另一个警报，该警报将负责取消，并将pendingIntent从第一个警报发送到它：

Intent cancellationIntent = new Intent(this, CancelAlarmBroadcastReceiver.class);
cancellationIntent.putExtra("key", pendingIntent);
PendingIntent cancellationPendingIntent = PendingIntent.getBroadcast(this, 0, cancellationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
am.set(AlarmManager.RTC_WAKEUP, time, cancellationPendingIntent, PendingIntent.FLAG_UPDATE_CURRENT);

CancelAlarmBroadcastReceiver如下：

public class CancelAlarmBroadcastReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        PendingIntent pendingIntent = intent.getParcelableExtra("key");
        AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        am.cancel(pendingIntent);
    }
}

我没有检查，但我认为它应该有用。

在特定时间取消重复警报

1 个答案: