从状态栏中删除通知图标

Question

I am displaying an icon in status bar.Now I want to remove that icon immediately when I open that content, after some time if we receive any alert, that icon will be displayed again. How can I do this?

Answer 1

Use the NotificationManager to cancel your notification. You only need to provide your notification id.

https://developer.android.com/reference/android/app/NotificationManager.html

private static final int MY_NOTIFICATION_ID= 1234;
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager;
mNotificationManager = (NotificationManager) getSystemService(ns);
mNotificationManager.notify(MY_NOTIFICATION_ID, notification);

The example code is not complete. It depends on how your created your notification. Just make sure you use the same id to cancel your notification as you used when you created your notification.

To cancel:

mNotificationManager.cancel(MY_NOTIFICATION_ID);

Answer 2

如果要在用户单击时删除通知， 请在创建通知之前设置通知标志FLAG_AUTO_CANCEL 。

Answer 3

I used the Builder patter so you can just set auto cancel from the setter setAutoCancel(true) . That looks something like this:

    String title = "Requests"; 
    String msg = "New requests available.";
    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(this)
                    .setSmallIcon(R.drawable.ic_gcm_icon)
                    .setContentTitle(title)
                    .setAutoCancel(true)
                    .setStyle(new NotificationCompat.BigTextStyle()
                            .bigText(msg))
                    .setContentText(msg);

    mBuilder.setContentIntent(contentIntent);
    mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());

Answer 4

Intent resultIntent = new Intent(application, MainActivity.class);
resultIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent resultPendingIntent = PendingIntent.getActivity(application, 0, resultIntent, 0);
NotificationManager nmgr = (NotificationManager) application.getSystemService(Context.NOTIFICATION_SERVICE);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(application)
            .setSmallIcon(R.drawable.icon_battery)
            .setContentTitle(application.getString(R.string.app_name))
            .setContentText("your text")
            .setOnlyAlertOnce(false)
            .setAutoCancel(true)
            .setTicker("your ticker")
            .setDefaults(Notification.DEFAULT_SOUND  ) //| Notification.DEFAULT_VIBRATE
            .setContentIntent(resultPendingIntent)
            .setVisibility(VISIBILITY_SECRET)
            .setPriority(Notification.PRIORITY_MIN);

Notification mNotification = mBuilder.build();
//  mNotification.flags |= FLAG_NO_CLEAR;
nmgr.notify(0, mNotification);