java - 如何在动画之前和之后执行 Action

Question

我想在动画之前和之后执行一些操作。这是我的代码:-

AnimatorSet set1 = new AnimatorSet();
set1.playTogether(
    ObjectAnimator.ofFloat(ball1, "translationX", x1, xn),
    ObjectAnimator.ofFloat(ball1, "translationY", y1, yn),
    ObjectAnimator.ofFloat(ball2, "translationX", xn, x1),
    ObjectAnimator.ofFloat(ball2, "translationY", yn, y1)

);
set1.setDuration(1000).start();

有没有动画设置方法可以做到这一点。？

Answer 1

您可以使用setAnimationListener来实现此目的:

set.addListener(new AnimatorListener() {

        @Override
        public void onAnimationStart(Animator arg0) {
            // TODO Auto-generated method stub
            //code when starting animation
        }

        @Override
        public void onAnimationRepeat(Animator arg0) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onAnimationEnd(Animator arg0) {
            // TODO Auto-generated method stub
            //code on animation end
        }

        @Override
        public void onAnimationCancel(Animator arg0) {
            // TODO Auto-generated method stub

        }
    });