@Override
        public Drawable newDrawable() {
            return new TouchEffectDrawable(this, null, null);
        }
Set the touch animation duration.
This setting about exit animation.
<p/>
Default:
ExitDuration: 160ms
FactorRate: 1.0
<p/>
This set will calculation: factor * duration
This factor need > 0

@param factor Touch duration rate
caprice/ui/src/main/java/net/qiujuer/genius/ui/drawable/TouchEffectDrawable.java