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java - DiffUtil.Callback 中 getChangePayload(int oldItemPosition, int newItemPosition) 的用法是什么

转载 作者:行者123 更新时间:2023-12-01 06:07:05 24 4
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DiffUtil.Callback有方法

getChangePayload(int oldItemPosition, int newItemPosition)

When areItemsTheSame(int, int) returns true for two items and areContentsTheSame(int, int) returns false for them, DiffUtil calls this method to get a payload about the change.

For example, if you are using DiffUtil with RecyclerView, you canreturn the particular field that changed in the item and yourItemAnimator can use that information to run the correct animation.

Default implementation returns null.

重写这个方法有什么好处?

我该如何使用它?

最佳答案

与RecyclerView中Partial和Full绑定(bind)的概念有关

detailed answer

关于java - DiffUtil.Callback 中 getChangePayload(int oldItemPosition, int newItemPosition) 的用法是什么,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/42138128/

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