简单布局收缩动画

private fun showOrhide(//收缩部分        linearLayout: LinearLayout,        //旋转箭头        taskDetailArrow: RelativeLayout    ) {        val scrollView = binding.scrollView        val rect = Rect()        linearLayout.getGlobalVisibleRect(rect)        val arrow = taskDetailArrow.getChildAt(1)        if (linearLayout.visibility == View.VISIBLE) {            arrow.rotation = 180f            ObjectAnimator.ofFloat(                linearLayout,                "translationY",                0.0f, -linearLayout.measuredHeight.toFloat()            ).apply {                duration = 500                interpolator = AccelerateInterpolator()                start()            }.addListener(object : Animator.AnimatorListener {                override fun onAnimationRepeat(animation: Animator?) {                }                override fun onAnimationEnd(animation: Animator?) {                    linearLayout.visibility = View.GONE                    scrollView.post {                        scrollView.smoothScrollTo(0, rect.bottom);                    }                }                override fun onAnimationCancel(animation: Animator?) {                }                override fun onAnimationStart(animation: Animator?) {                }            })        } else {            arrow.rotation = 0f            ObjectAnimator.ofFloat(                linearLayout,                "translationY",                -linearLayout.measuredHeight.toFloat(), 0.0f            ).apply {                duration = 500                interpolator = AccelerateInterpolator()                start()            }.addListener(object : Animator.AnimatorListener {                override fun onAnimationRepeat(animation: Animator?) {                }                override fun onAnimationEnd(animation: Animator?) {                    linearLayout.visibility = View.VISIBLE                    scrollView.post {                        scrollView.smoothScrollTo(0, rect.bottom);                    }                }                override fun onAnimationCancel(animation: Animator?) {                }                override fun onAnimationStart(animation: Animator?) {                }            })        }
根据传入的View的visibility来执行收缩或者展开，scrollView不是找不到而是最外层布局哦。
更多相关文章

随机推荐
