如何实现RecyclerView的ItemAnimator禁用的动画notifyItemChanged [英] How to implement ItemAnimator of RecyclerView to disable the animation of notifyItemChanged

问题描述

在我的项目，我需要禁用变更的 RecyclerView 动画，而 notifyItemChanged 。

In my project I need disable the "change" animation of RecyclerView while notifyItemChanged.

我调查 RecyclerView 的源代码中，并覆盖 android.support.v7.widget.DefaultItemAnimator 如下：

I investigated in the source of RecyclerView and override android.support.v7.widget.DefaultItemAnimator as below:

private static  class ItemAnimator extends DefaultItemAnimator
{
    @Override
    public boolean animateChange(RecyclerView.ViewHolder oldHolder, RecyclerView.ViewHolder newHolder, int fromX, int fromY, int toX, int toY) {
        if(oldHolder != null)
        {
            oldHolder.itemView.setVisibility(View.INVISIBLE);
            dispatchChangeFinished(oldHolder, true);
        }

        if(newHolder != null)
        {
            dispatchChangeFinished(newHolder, false);
        }

        return false;
    }
}

但我不知道我是否符合谷歌文档的规范： <一href="https://developer.android.com/reference/android/support/v7/widget/RecyclerView.ItemAnimator.html#animateChange(android.support.v7.widget.RecyclerView.ViewHolder,%20android.support.v7.widget.RecyclerView.ViewHolder,%20int,%20int,%20int,%20int)">RecyclerView.ItemAnimator.animateChange

But I am not sure if I match the spec of the Google document: RecyclerView.ItemAnimator.animateChange

据我了解源$ C ​​$ C，如果我不覆盖的方法得当，oldHolder的不会回收。

According to my understanding source code, if I do not override the method properly, the oldHolder will not recycled.

请帮我找出如何重写 animateChange 以正确的方式。

Please help me figure out how to override animateChange in a correct way.

感谢。

推荐答案

我已经找到了正确的解决方案，只是删除animateChange。

I have found the correct solution to just remove the animateChange.

这很简单。谷歌已经实现的功能。

It's very simple. Google has implemented the functionality.

RecyclerView.getItemAnimator().setSupportsChangeAnimations(false);

文件：<一href="https://developer.android.com/reference/android/support/v7/widget/RecyclerView.ItemAnimator.html#setSupportsChangeAnimations%28boolean%29">setSupportsChangeAnimations

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