RecyclerView-获取所有现有视图/视图持有者 [英] RecyclerView - get all existing views/viewholders

问题描述

我要在显示数据时更新RecyclerView，在我的情况下，我显示带或不带标签的图像.

I want to update the RecyclerView while it's displaying data, in my case, I show images with or without labels.

默认情况下，我在创建视图支架时设置标签的可见性，这很好，但是我希望用户在显示RecyclerView时通过菜单更改标签的可见性，因此我想手动更新可见性RecyclerView中的所有现有视图.

Defaultly I set the visibility of the label when I create the view holder and that's fine, but I want the user to change the labels visibility through the menu while the RecyclerView is shown, so I want to manually update the visibility for all existing views in the RecyclerView.

我能以某种方式获取所有现有的Views吗?我需要所有的东西，不仅是可见的东西，而且我不希望以后回收的View不更新...

Can I somehow get all existing Views? I need all, not only the visible ones, I don't want that a later recycled View is not updated...

推荐答案

在适配器类中:

Boolean isVisible = false;

public CustomAdapter(boolean isVisible) {
    this.isVisible= isVisible;
}
    @Override
    public void onBindViewHolder(ViewHolder holder, final int position) {
     ...

         if (isVisible){
           //setVisibility(View.VISIBLE)
         }else{
         //setVisibility(View.INVISIBLE
         }
    }

public void updateVisibility(boolean newValue){
 isVisible= newValue;
}

在Activity中要在其中实例化适配器的位置更新值:

In Activity where you want to update the value where the adapter is instantiated:

adapter.updateVisibility(false);
adapter.notifydataSetChanged();

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