仅将RecyclerView中的视图动态添加到当前项目 [英] Dynamically adding Views in a RecyclerView only to current item

问题描述

我正在将RecyclerView中的视图动态添加到我的项目中.这些添加的视图仅应与它们添加到的项目相关，但是滚动时出现问题.似乎View已被回收并加载了新项目，但是以前添加的那些视图仍然存在，只是现在在错误的项目上.

I'm dynamically adding Views to my items in a RecyclerView. These added Views should only be related to the item which they're added to, but I'm having a problem when I scroll. It seems the View is recycled and a new item is loaded, but those previously added views are still there, only now on the wrong item.

我假设这是因为ViewHolder被重用，所以添加的项目在加载时会再次显示一个新项目.

I'm assuming that it's just because the ViewHolder is being reused, so the added items show up again with a new item, when loaded.

如何解决这个问题?

推荐答案

这是我的一个老问题.悬而未决的是赏金，因此受欢迎程度激增，并提出了许多新的和不相关的答案.

This was an old question of mine. A bounty was placed on it, hence the surge of popularity and the multiple new and irrelevant answers.

正如我在下面对此答案和 @CQM 的评论的评论中所述我的原始问题是，答案是重写onViewRecycled()方法并在那里执行任何需要的操作.回收视图时将调用此方法，并且任何清理操作都可以在此处完成.

As stated in both my comment to this answer and @CQM's comment below my original question, the answer is to override the onViewRecycled() method and perform any needed operations there. This method is called when a view is recycled, and any cleanup operations can be done here.

有关此方法的文档可以找到

Documentation on this method can be found here.

就我而言，这是删除视图中不可见的TextView附件的问题.文本本身已被删除，但视图仍然存在.如果许多不可见的TextView聚集在视图上，并且在滚动时未正确回收，则滚动将开始滞后.

In my case, it was a matter of deleting the invisible TextView's attached to the view. The text itself had been deleted, but the view remained. If many invisible TextView's accumulate on the view and aren't properly recycled when scrolling, the scroll will begin to lag.

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