1.  float PaddingTop
    {
    	get { return (_paddingTop / 2f) + ShadowDy; }
    	set { _paddingTop = value; }
    }
   

if I want to hide the shadow,
however, it seems it still increased the padding Top?
2.
RectF rect = new RectF(0, 0, width, height - 0);
why need -0?

@bill2004158 Not to worry, we'll be revising this PR to make it possible to hide the shadow. That's why it's marked as do-not-merge right now. Thanks!

I understand some poeple had problems with previous changes but now reverting or redoing those changes breaks others. I was quite happy with the previous version indeed. would you mind sharing all styles you have removed that we can set in the shared library? because when I look at your commits I am bit lost. some padding are set dynamically looks like.

Hi @EmilAlipiev! If you were happy with the way it looked as of #1570, then you want to do:

using Xamarin.Forms.PlatformConfiguration; 
using Xamarin.Forms.PlatformConfiguration.AndroidSpecific; 

…

_button.On<Android>().SetUseDefaultPadding(true).SetUseDefaultShadow(true);

I would have liked to have those settings enabled by default, but that was, unfortunately, a behavioral change that would have broken old apps.

Let me know if you have any further questions. Thanks!

@samhouts

Is your snippet supposed to be implemented as custom renderer ? What's this _button variable ?

Thanks :)

Update : my bad, for anyone... just extending with custom class Xamarin.Forms.Button and implement @samhouts snippet in your custom button class constructor.

That's one way to do it. You can apply this platform specific property to a standard Button, too.

See https://docs.microsoft.com/en-us/xamarin/xamarin-forms/platform/platform-specifics/consuming/android for some examples of how to use platform specifics.

Thanks!