在Android中选择取消选择项的CarView Group [英] CarView Group with select an deselecting items in android

问题描述

此处，将分支项目作为按钮在recycleview内的cardview上对齐.我需要在每个cardview上单击一次，并且颜色应该更改，但要点是，每次我单击另一张cardview之前，都应取消选择所选择的cardView.我什至没有实现这一点的逻辑.请提供一种简便的方法

Here the Branch items are aligned on a cardview within the recycleview as a button. I need to implement a click on each cardview and the color should change, but the point is that each time i click another cardView the selected cardView before should deselected. I don't even have a logic to implement this. Please help with an easy method

推荐答案

您可以尝试一下，

public class yourRecyclerViewAdapter extends RecyclerView.Adapter<yourRecyclerViewAdapter.yourViewHolder> {

    private static int lastCheckedPos = 0;

         ... ...

    public void onBindViewHolder(ViewHolder holder, final int position) {

        if(position == lastCheckedPos) {
            holder.cardView..setCardBackgroundColor(Color.RED); //Define the re
        } else {
            holder.cardView..setCardBackgroundColor(Color.WHITE);
        }

        holder.cardView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int prevPos = lastCheckedPos;
                lastCheckedPos = position;
                notifyItemChanged(prevPos);
                notifyItemChanged(lastCheckedPos);
           }
       });
    }
       ... ... 
}

它可能会为实现提供基本逻辑

It may give a base logic on the implementation

这篇关于在Android中选择取消选择项的CarView Group的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！