public final void enter(boolean fast) {
        cancel();

        mSoftwareAnimator = createSoftwareEnter(fast);

        if (mSoftwareAnimator != null) {
            mSoftwareAnimator.start();
        }
    }
public final void enter ( boolean fast ) { cancel ( ) ; mSoftwareAnimator = createSoftwareEnter ( fast ) ; if ( mSoftwareAnimator != null ) { mSoftwareAnimator . start ( ) ; } }
Starts a ripple enter animation.

@param fast whether the ripple should enter quickly