RippleDrawable mask color, what is it for?

Question

In referring to the RippleDrawable for Android L, https://developer.android.com/reference/android/graphics/drawable/RippleDrawable.html, there\'s a way to mask away to conta

Answer 1

Using an opaque color for your mask -- whether that's @android:color/white, #ff000000, or #ff123456 doesn't matter -- means you are masking against a fully opaque rectangle that is the same size as your drawable. It's the most efficient rendering path for ripple masks.