android – OnClickListener for CardView?-ThrowExceptions

Exception or error:

How do I attach an OnClickListener to a CardView? I want every single card to have a different action when clicked.

I have a RecyclerView that has a custom adapter for displaying the cards. This is how it’s implemented.

How to solve:

You should implement the OnItemClickListener in your ViewHolder class, and pass the current item to the ViewHolder instances on every onBindViewHolder().

From this post:

public static class ViewHolder extends RecyclerView.ViewHolder {
    public View view;
    public Item currentItem;

    public ViewHolder(View v) {
        super(v);
        view = v;
        view.setOnClickListener(new View.OnClickListener() {
            @Override public void onClick(View v) {
                // item clicked
            }
        });
    }
}

@Override public void onBindViewHolder(ViewHolder viewHolder, int i) {
    viewHolder.currentItem = items.get(i);
}

###

  1. you just add onClick Listener, which Item you want in onBindViewHolder. where easily accessing the value of that position. please check the below code.

     @Override
    public void onBindViewHolder(final MyViewHolder holder, final int position) {
    
        holder.title.setText(Html.fromHtml(html2text(results.get(position).getTitle().toString())));
        holder.description.setText(Html.fromHtml(html2text(results.get(position).getSummary().toString())));
        holder.url.setText(Html.fromHtml(html2text(results.get(position).getUrl().toString())));
        holder.url.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent=new Intent(mContext, DetailsActivity.class);
                intent.putExtra("url",results.get(position).getUrl().toString());
               mContext. startActivity(intent);
    
            }
        });
    

###

This is my solution for this problem:

  1. First add reference to View view object in ViewHolder class

    public static class TouristViewHolder extends RecyclerView.ViewHolder{
        public ImageView img;
        public TextView name;
        public TextView description;
        public RatingBar rating;
        public View view;               // <----- here
    
        public TouristViewHolder(final View view) {
            super(view);
            this.view = view;            // <----- here
            // ... rest of code
       }
    }
    
  2. Next, in method onBindViewHolder(final MyViewHolder holder, final int position), I add a listener and set new Intent.

    @Override
    public void onBindViewHolder(TouristViewHolder touristViewHolder, final int position) {
    
    touristViewHolder.view.setOnClickListener(new View.OnClickListener() {  // <--- here
        @Override
        public void onClick(View v) {
            Log.i("W4K","Click-"+position);
            context.startActivity(new Intent(context,MainActivity.class));  // <--- here
        }
    });
    

It works for me fine, hope it will help someone else.

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