RecyclerView items are not painted properly

问题

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);
    }
}

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

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

Item 31 has menu

Item 78 has menu

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

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

回答1:

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

来源：https://stackoverflow.com/questions/38849759/recyclerview-items-are-not-painted-properly