I can't change the color of the button through a custom xml file, how can I fix it?

Question

Android

created a custom xml file, where I indicated the orange color, and rounded the corners a little, after creating the button, I specified the created xml file as a background, but the color of the button remained the same, what could be the matter?

Answer 1

Add the app:backgroundTint="@null" attribute to the button in activity_main