Android - Remove action button from notification

Question

I want to dismiss the notification action buttons (not the whole notification) when clicking on those action buttons. (Lets say: a download notification with stop action button. When click on stop, dismiss stop button and change contentText to 'Download canceled')

The only thing it comes to my mind is to cancel notification and notify another one with the same id, but this seems to be an ugly workaround...

So, is there any way to remove action buttons from notifications?

(i think there is no need to put any code, but I will if its necessary...)

Answer 1

If you are using the NotificationCompat.Builder from the v4 Support Library, you can simply access the builder's action collection directly (Unfortunately no public mutators are provided).

The following will do the trick (Of course you must update re-notify):

NotificationCompat.Builder notifBuilder = NotificationCompat.Builder(context);
...
notifBuilder.mActions.clear();

Answer 2

I am using following workaround:

NotificationCompat.Builder builder = //existing instance of builder
//...
try {
    //Use reflection clean up old actions
    Field f = builder.getClass().getDeclaredField("mActions");
    f.setAccessible(true);
    f.set(builder, new ArrayList<NotificationCompat.Action>());
} catch (NoSuchFieldException e) {
    // no field
} catch (IllegalAccessException e) {
    // wrong types
}

from here: https://code.google.com/p/android/issues/detail?id=68063

Note: Proguard may break the button clearing in obfuscated build. Fix is to add the following two lines in proguard-rules.pro

-keep class androidx.core.app.NotificationCompat { *; }
-keep class androidx.core.app.NotificationCompat$* { *; }