RecycleView点击事件

接上一篇。
recycleView需要我们自己给子项目具体的View去注册点击事件。

1. 修改FruitAdapter

 static class ViewHolder extends RecyclerView.ViewHolder{
    
 //添加fruitView保存子项最外层布局的实例，把image和text包起来。之后在oncreateviewholder方法中注册点击事件
    View fruitView;
    ImageView fruitImage;
    TextView fruitName;
    public ViewHolder(View view){
    
        super(view);
        fruitView = view;
        fruitImage = (ImageView) view.findViewById(R.id.fruit_image);
        fruitName = (TextView) view.findViewById(R.id.fruit_name);
    }
}


//为最外层和image注册点击事件
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.activity_fruit_item, parent, false);
        final ViewHolder holder  = new ViewHolder(view);
        
        holder.fruitView.setOnClickListener(new View.OnClickListener(){
    
            @Override
            public  void onClick(View v){
    
                int position = holder.getAdapterPosition();
                Fruit fruit = mFruitList.get(position);
                Toast.makeText(v.getContext(),"you click view" + fruit.getName(),Toast.LENGTH_SHORT).show();
            }
        });

        holder.fruitImage.setOnClickListener(new View.OnClickListener(){
    
            @Override
            //获取position，通过position拿到fruit实例
            public void onClick(View v){
    
                int position = holder.getAdapterPosition();
                Fruit fruit = mFruitList.get(position);
                //toast消息提示
                Toast.makeText(v.getContext(),"you click image" + fruit.getName(),Toast.LENGTH_SHORT).show();
            }
        });
        return holder;
    }