Keypress on xamarin form not entry

Question

I have a Xamarin Android form (content page) and I want when the user presses the a certain keyboard key to take a certain action, like calling a method. I can not find anywhere any solution to that. If there is anyone knowing how to do this I would really appreciate his/her help.

Thank you

Answer 1

Try overriding DispatchKeyEvent in your MainActivity

    public override bool DispatchKeyEvent(KeyEvent e)
    {
        // if the Keycode is A .. there's lots of these
        //you'll have to checkout the Keycode class for more options
        //this example will fire the following code when 'A' is pressed
        if (e.KeyCode == Keycode.A)
        {
            //invoke your method here
        } 

        //return base if needed, otherwise keystrokes won't get automatically passed into textboxes etc and stuff will act wacky
        return base.DispatchKeyEvent(e);
    }

https://learn.microsoft.com/en-us/dotnet/api/android.app.activity.dispatchkeyevent?view=xamarin-android-sdk-9

if this doesn't work you can also override OnKeyDown and OnKeyUp and OnKey AFAIK

Difference between onKey(), OnKeyDown() and dispatchKeyEvent() methods provided by Android?