Question

我遇到了问题，我想为我的应用发出通知。首先我建立一个通知然后如果我不想要它然后我想再次删除它。我怎么能这样做，我可以删除一个特定的通知

我从setOnItemLongClickListener开始这个建筑。

Mainactivity：

                            if (isNotificationVisible()){
                                NotificationManager mNotificationManager =
                                        (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
                                mNotificationManager.cancel(1122334455);
                            }
                            else {

                                int beginday = begincalendar.get(Calendar.DAY_OF_MONTH);
                                int beginyear=begincalendar.get(Calendar.YEAR);
                                int beginmonth=begincalendar.get(Calendar.MONTH);
                                Intent myIntent = new Intent(MainActivity.this, AlarmReceiver.class);
                                myIntent.setAction(String.valueOf(id));
                                pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, myIntent,0);
                                AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
                                alarmManager.set(AlarmManager.RTC, begincalendar.getTimeInMillis(), pendingIntent);

                            }

NotificationService类：

    public class NotificationService extends Service {

    @Override
    public IBinder onBind(Intent arg0)
    {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void onCreate()
    {
        // TODO Auto-generated method stub
        super.onCreate();
    }

    @SuppressWarnings("static-access")
    @Override
    public void onStart(Intent intent, int startId)
    {
        NotificationCompat.Builder mBuilder =
                new NotificationCompat.Builder(this)
                        .setSmallIcon(R.drawable.ic_launcher)
                        .setContentTitle("title")
                        .setOnlyAlertOnce(true)
                        .setContentText("context")
                        .setDefaults(Notification.DEFAULT_SOUND | Notification.DEFAULT_VIBRATE);


        Intent resultIntent = new Intent(this, MainActivity.class);
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        stackBuilder.addParentStack(MainActivity.class);
        stackBuilder.addNextIntent(resultIntent);
        PendingIntent resultPendingIntent =
                stackBuilder.getPendingIntent(
                        0,
                        PendingIntent.FLAG_UPDATE_CURRENT
                );
        mBuilder.setContentIntent(resultPendingIntent);
        NotificationManager mNotificationManager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        mNotificationManager.notify(1122334455, mBuilder.build());
    }


}

AlarmReceiver类：

    public class AlarmReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent)
    {
        Intent service1 = new Intent(context, NotificationService.class);
        context.startService(service1);

    }
}

isNotificationVisible：

private boolean isNotificationVisible() {
    Intent notificationIntent = new Intent(context, MainActivity.class);
    PendingIntent test = PendingIntent.getActivity(context, 1122334455, notificationIntent, PendingIntent.FLAG_NO_CREATE);
    return test != null;

}

Answer 1

使用NotificationManager的public void cancel（int id）方法清除通知。

假设您想要在按钮上单击取消此通知，请在onClick（）方法中添加以下代码，

mNotificationManager.cancel(1122334455); // parameter is your notification ID

有关详细信息，请参阅here.

如何删除特定通知

1 个答案: