25

我正在尝试使用淡入淡出的动画制作按钮动画AnimatorSet

Button fades in > Click button > Remaining buttons fade out

所以为了做到这一点，我想设置onClickListner after the animation is completed，但这似乎不起作用。单击动画中间的按钮triggers the onClick action：

setQuestion = new AnimatorSet();           
setQuestion.playSequentially(fadeinAnimationQ,fadeinAnimation1,fadeinAnimation2,fadeinAnimation3,fadeinAnimation4,fadeinAnimation5);
setQuestion.start();

这是检查的方法if the animation has finished。

private void checkAnimation() {
    while (true) {
        // Check if animation has ended
        if (setQuestion.isRunning() == false) {
            assignListners();
            break;
        }
    }
}
4

3 回答 3

52

你可以在fadeinAnimation5 上设置一个AnimatorListener 。这会给你一个 onAnimationEnd 回调。

fadeinAnimation5.addListener(new AnimatorListener() {

            @Override
            public void onAnimationStart(Animator animation) {
                // ...
            }

            @Override
            public void onAnimationRepeat(Animator animation) {
                // ...
            }

            @Override
            public void onAnimationEnd(Animator animation) {
                // ...
            }

            @Override
            public void onAnimationCancel(Animator animation) {
                // ...
            }
        });

或者，按照slott的建议，使用AnimatorListenerAdapter

fadeinAnimation5.addListener(new AnimatorListenerAdapter() {

    @Override
    public void onAnimationEnd(Animator animation) {
        // ...
    }
}
于 2014-02-18T12:39:30.900 回答
2

我遇到了类似的问题，这是我解决它的方法：

private void crossFadeAnimation(final View fadeInTarget, final View fadeOutTarget, long duration){
    AnimatorSet mAnimationSet = new AnimatorSet();
    ObjectAnimator fadeOut = ObjectAnimator.ofFloat(fadeOutTarget, View.ALPHA,  1f, 0f);
    fadeOut.addListener(new Animator.AnimatorListener() {
        @Override
        public void onAnimationStart(Animator animation) {
        }

        @Override
        public void onAnimationEnd(Animator animation) {
            fadeOutTarget.setVisibility(View.GONE);
        }

        @Override
        public void onAnimationCancel(Animator animation) {
        }

        @Override
        public void onAnimationRepeat(Animator animation) {
        }
    });
    fadeOut.setInterpolator(new LinearInterpolator());

    ObjectAnimator fadeIn = ObjectAnimator.ofFloat(fadeInTarget, View.ALPHA, 0f, 1f);
    fadeIn.addListener(new Animator.AnimatorListener() {
        @Override
        public void onAnimationStart(Animator animation) {
            fadeInTarget.setVisibility(View.VISIBLE);
        }

        @Override
        public void onAnimationEnd(Animator animation) {}

        @Override
        public void onAnimationCancel(Animator animation) {}

        @Override
        public void onAnimationRepeat(Animator animation) {}
    });
    fadeIn.setInterpolator(new LinearInterpolator());
    mAnimationSet.setDuration(duration);
    mAnimationSet.playTogether(fadeOut, fadeIn);
    mAnimationSet.start();
}
于 2015-10-21T17:25:00.557 回答
1

由于 AnimatorSet 继承自 Animator，因此您实际上可以直接为 AnimatorSet 设置侦听器。这是一些代码：

import android.animation.Animator;

        AnimatorSet setQuestion = new AnimatorSet();
        setQuestion.playSequentially(fadeinAnimationQ,fadeinAnimation1,fadeinAnimation2,fadeinAnimation3,fadeinAnimation4,fadeinAnimation5);
        setQuestion.addListener(new Animator.AnimatorListener() {
            @Override
            public void onAnimationStart(Animator animator) {

            }

            @Override
            public void onAnimationEnd(Animator animator) {
            // !! turn on your onClickListener here !!
            }

            @Override
            public void onAnimationCancel(Animator animator) {

            }

            @Override
            public void onAnimationRepeat(Animator animator) {

            }
        });
        setQuestion.start();
于 2020-03-11T05:17:32.820 回答