RecyclerView在加载、插入、删除、移动等数据时,可能会出现动画卡顿或者没有动画的情况。为了解决这个问题,可以尝试以下几种方法:
recyclerView.setItemViewCacheSize(20)
class SlideItemAnimator : DefaultItemAnimator() {
override fun animateRemove(holder: RecyclerView.ViewHolder?): Boolean {
holder?.let {
val animator = ValueAnimator.ofFloat(0f, -it.itemView.height.toFloat())
animator.addUpdateListener { valueAnimator ->
val value = valueAnimator.animatedValue as Float
it.itemView.translationY = value
}
animator.duration = removeDuration
animator.start()
}
return super.animateRemove(holder)
}
override fun animateAdd(holder: RecyclerView.ViewHolder?): Boolean {
holder?.let {
val animator = ValueAnimator.ofFloat(it.itemView.height.toFloat(), 0f)
animator.addUpdateListener { valueAnimator ->
val value = valueAnimator.animatedValue as Float
it.itemView.translationY = value
}
animator.duration = addDuration
animator.start()
}
return super.animateAdd(holder)
}
}
recyclerView.itemAnimator = null
使用上述方法之一可以帮助您解决RecyclerView动画问题。