ObjectAnimatorActivity.java 文件源码

@OnClick(R.id.translateAndFade)
public void onTranslateAndFade() {
    ValueAnimator xAnimator = ObjectAnimator.ofFloat(icon, "translationX", icon.getTranslationX(), animateForward ? icon.getWidth() * 2 : 0.0f);
    ValueAnimator yAnimator = ObjectAnimator.ofFloat(icon, "translationY", icon.getTranslationY(), animateForward ? icon.getHeight() * 4 : 0.0f);
    ValueAnimator alphaAnimator = ObjectAnimator.ofFloat(icon, "alpha", icon.getAlpha(), animateForward ? 0.0f : 1.0f);

    AnimatorSet animatorSet = new AnimatorSet();
    animatorSet.setDuration(FULL_ANIMATION_DURATION);
    animatorSet.setInterpolator(new AccelerateDecelerateInterpolator());
    animatorSet.playTogether(xAnimator, yAnimator, alphaAnimator);
    animatorSet.addListener(new AnimatorListenerAdapter() {
        @Override
        public void onAnimationEnd(Animator animation) {
            System.out.println("translateAndFade END");
        }
    });
    animatorSet.start();

    animateForward = !animateForward;
}