Android - TextView animator

TextViewAnimator animator = new TextViewAnimator();
animator.flip(myTextView, label);
// animator.fade(myTextView, label);

BaseAnimatorListener

package fr.o80.android.animator;

import android.animation.Animator;

/**
 * @author Olivier Perez
 */
abstract class BaseAnimatorListener implements Animator.AnimatorListener {
    @Override
    public void onAnimationStart(Animator animation) {

    }

    @Override
    public void onAnimationEnd(Animator animation) {

    }

    @Override
    public void onAnimationCancel(Animator animation) {

    }

    @Override
    public void onAnimationRepeat(Animator animation) {

    }
}

TextViewAnimator

package fr.o80.android.animator;

import android.animation.Animator;
import android.animation.ObjectAnimator;
import android.widget.TextView;

import BaseAnimatorListener;

/**
 * @author Olivier Perez
 */
public class TextViewAnimator {

    private static final long ANIMATION_SHORT = 300;

    public void fade(final TextView textView, final String label) {
        final ObjectAnimator fadeOut = ObjectAnimator
                .ofFloat(textView, "alpha", 0)
                .setDuration(ANIMATION_SHORT / 2);
        final ObjectAnimator fadeIn = ObjectAnimator
                .ofFloat(textView, "alpha", 1)
                .setDuration(ANIMATION_SHORT / 2);

        fadeOut.addListener(new BaseAnimatorListener() {
            @Override
            public void onAnimationEnd(Animator animation) {
                textView.setText(label);
                fadeIn.start();
            }
        });

        fadeOut.start();
    }

    public void flip(final TextView textView, final String label) {
        final ObjectAnimator flipOut = ObjectAnimator
                .ofFloat(textView, "scaleY", 0)
                .setDuration(ANIMATION_SHORT / 2);
        final ObjectAnimator flipIn = ObjectAnimator
                .ofFloat(textView, "scaleY", 1)
                .setDuration(ANIMATION_SHORT / 2);

        flipOut.addListener(new BaseAnimatorListener() {
            @Override
            public void onAnimationEnd(Animator animation) {
                textView.setText(label);
                flipIn.start();
            }
        });

        flipOut.start();
    }
}