RecyclerView物品未正确涂漆 [英] RecyclerView items are not painted properly

问题描述

在我的ViewHolder中，我有此方法，当 onBindViewHolder :

In my ViewHolder, I have this method, that is called in the adapter when onBindViewHolder:

protected void bindViews(Item item) {
    dateTextView.setText(item.getDate());
    titleTxtView.setText(item.getTitle());
    if (item.hasMenu()) {
        Log.d("tag", "Item " + item.getId() + " has menu");
        menuButton.setVisibility(VISIBLE);
    } else {
        menuButton.setVisibility(INVISIBLE);
    }
}

但是有些 Item 没有菜单(即 hasMenu()返回false)，但显示了 menuButton ，反之反之亦然.

But there are Items that doesn't have menu (that is hasMenu() returns false) but menuButton is shown and vice versa.

我认为是因为物品回收，因为我有100个物品，而只有2个有菜单.打印:

I think is because the item recycling because I have 100 items and just 2 have menu. It prints:

第31项具有菜单

Item 31 has menu

第78项具有菜单

没关系.但是，在该应用程序中，我可以看到其他一些项目正在显示 menuButton ，而它们不应该显示.

That's ok. However, in the app I can see that some other items are showing the menuButton and they shouldn't.

当显示/隐藏 menuButton 时，我是否应该强制重涂每个项目?如果是这样，我该怎么办?

Should I force repaint each item when show/hide the menuButton? If so, how can I do it?

推荐答案

使用 public int getItemViewType(int position)和 public int getItemCount()来填充两个不同的布局，一个带菜单，另一个不带菜单.

Use public int getItemViewType(int position) and public int getItemCount() to inflate two different layout,one with menu and other without the menu.

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