android 控件位置对调实现带动画

对调

实现上述功能代码很简单，如下：

private ObjectAnimator leftAnimator, rightAnimator;

private void changeText(View tvFrom, View tvTo) {
    float distance = tvTo.getX() - tvFrom.getX();
    float textWidth = tvFrom.getWidth() - tvTo.getWidth();
    if (distance < 0) {
        distance = Math.abs(distance);
        float otherDistance = distance - Math.abs(textWidth);
        if (textWidth > 0) {
            otherDistance = distance + textWidth;
        }
        leftAnimator = ObjectAnimator.ofFloat(tvFrom, "translationX", otherDistance, 0);
        rightAnimator = ObjectAnimator.ofFloat(tvTo, "translationX", -distance, 0);
    } else {
        float otherDistance = distance + Math.abs(textWidth);
        if (textWidth > 0) {
            otherDistance = distance - textWidth;
        }
        leftAnimator = ObjectAnimator.ofFloat(tvFrom, "translationX", 0, distance);
        rightAnimator = ObjectAnimator.ofFloat(tvTo, "translationX", 0, -otherDistance);
    }
    leftAnimator.setDuration(500);
    leftAnimator.start();
    rightAnimator.setDuration(500);
    rightAnimator.start();
    rightAnimator.addListener(new Animator.AnimatorListener() {
        @Override
        public void onAnimationStart(Animator animation) {
        }

        @Override
        public void onAnimationEnd(Animator animation) {
            startAnimal = false;

        }

        @Override
        public void onAnimationCancel(Animator animation) {

        }

        @Override
        public void onAnimationRepeat(Animator animation) {

        }
    });
}

需要注意的是，如果是简单的展示就没什么问题了，但是如果是要对转换后进行 *** 作的话还要想到这个转换其实是将整个控件也掉位置了，不仅仅只是显示效果而已。需要处理对应的逻辑。