public void setEnterInterpolator(Interpolator interpolator) {
        if (interpolator == null)
            return;
        mEnterAnimate.mInterpolator = interpolator;
    }
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