How to set a different background color for function keys in xml on custom numeric keyboard?

Sudheer_469

I am developing a custom numeric keyboard for Android. I tried to set different background color for function keys, number keys back ground color set as expected but i am trying different properties for function keys but not worked please give me a suggestion i need to implement below keypad

Yelinzh

Try to override the KeyboardView class to re-write the OnDraw method to set background for the keys.

public class CustomKeyboardView : KeyboardView
{
    public override void OnDraw(Android.Graphics.Canvas canvas)
    {
        base.OnDraw(canvas);

        var keys = this.Keyboard.Keys;
        foreach (var key in keys)
        {
            //draw the background for the key
        }
    }
    ...
}

Here is the similar case link, you could refer to:
https://stackoverflow.com/questions/17714172/how-to-change-key-background-of-any-key-in-android-soft-keyboard/22454382#22454382

Sudheer_469

Thanks for reply @Yelinzh how to call onDraw method in Custom render

Yelinzh

how to call onDraw method in Custom render

Do you test on a Xamarin.Forms project? Try to create a custom keyboard view on the Android platform. Then create a custom renderer for the input control such as Entry and set the keyboard for the control.

You could google with the keyword as How to create a custom keyboard with Xamarin Forms (Android) to check the related document.