android - 更改 recyclerView 项目背景 onClick？

Question

当我在我的 recyclerView 中按下一个按钮时，我会这样做，这将改变它的背景颜色，所以它会被按下，但我不是很喜欢 android，所以我无法获得怎么做。

我已经尝试了一些在网上找到的指南，但其中大部分对我没有用，就像这个 guide按钮没有变色，只是白色。我会那样想 screen of my activity

这是我的 recyclerView 适配器代码:

public class RecyclerViewMenu extends RecyclerView.Adapter<RecyclerViewMenu.MenuViewHolder> {

private ArrayList<MenuConstructor> menuConstructors;
private OnItemClickListener onItemClickListener;

public interface  OnItemClickListener {
    void onItemClick(int position);
}

public void setOnItemClickListener(OnItemClickListener listener){
    onItemClickListener = listener;
}

@NonNull
@Override
public MenuViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.menucard,parent,false);
    return new MenuViewHolder(v, onItemClickListener);

}


RecyclerViewMenu(ArrayList<MenuConstructor> menuList){
    menuConstructors = menuList;
}

@Override
public void onBindViewHolder(@NonNull final MenuViewHolder holder, final int position) {


    MenuConstructor currentItem = menuConstructors.get(position);

    holder.textView.setText(currentItem.getDesk());
    holder.itemView.setBackgroundColor(Color.parseColor(currentItem.getSfondoColor()));
    holder.textView.setTextColor(Color.parseColor(currentItem.getFontColor()));



}

@Override
public int getItemCount() {
    return menuConstructors.size();
}

public static class MenuViewHolder extends RecyclerView.ViewHolder {

    public TextView textView;

    MenuViewHolder(View itemView, final OnItemClickListener listener) {
        super(itemView);

        textView = itemView.findViewById(R.id.ButtonName);

        itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                    if(listener != null){
                        int position = getAdapterPosition();
                        if (position != RecyclerView.NO_POSITION){
                            listener.onItemClick(position);
                        }
                    }


            }
        });



    }
}

实际上，如果我按下按钮，它会加载到上层 RecyclerView 不同的项目，比如如果“CICCIO”被按下，它将加载一些东西，如果按下另一个按钮，它将加载其他项目，并且如果我使用快速学习者答案，就会发生这种情况

Gif of activity that change items by pressing buttons

Here after using quick learner solution it's change color but not anymore the items

Answer 1

如果你想在回收站 View 中更改所选项目的颜色，试试这个

 public class AdapterClass extends RecyclerView.Adapter<AdapterClass.ViewHolder> {
            private int selected_position = -1;

            @Override
            public void onBindViewHolder(PlacesLocationAdapter.ViewHolder holder, final int position) {
                if (selected_position == position) {
                    // do your stuff here like
                    //Change selected item background color 

                } else {
                      // do your stuff here like
                      //Change  unselected item background color 
                }
              // rest of the code here

       }


    }

而这个MenuViewHolder类应该是这样的

public static class MenuViewHolder extends RecyclerView.ViewHolder {

    public TextView textView;

    MenuViewHolder(View itemView, final OnItemClickListener listener) {
        super(itemView);

        textView = itemView.findViewById(R.id.ButtonName);

        itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                    if(listener != null){
                        int position = getAdapterPosition();
                        if (position != RecyclerView.NO_POSITION){
                            listener.onItemClick(position);
                         selected_position = position;
                         notifyDataSetChanged();
                        }
                    }


            }
        });



    }