RecyclerView设置 item点击事件

最新推荐文章于 2023-11-11 15:11:55 发布

AnakinZhang

最新推荐文章于 2023-11-11 15:11:55 发布

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本文链接：https://blog.youkuaiyun.com/AnakinZhang/article/details/51745145

版权

本文介绍了一个使用 Android 的 RecyclerView 和 GridLayoutManager 实现的简单示例应用。该应用展示了一个基于网格布局的图片列表，并实现了基本的点击事件。

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package com.itheima.changethemedemo;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends FragmentActivity {


    private RecyclerView mRvMain;
    private LinearLayoutManager mLayoutManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        initView();
        initData();
        initEVent();
    }

    private void initView() {

        setContentView(R.layout.activity_main);
        mRvMain = (RecyclerView) findViewById(R.id.rv_mian);


    }

    private void initData() {
       // mLayoutManager = new LinearLayoutManager(this);
       GridLayoutManager gridLayoutManager =  new GridLayoutManager(this,4);
        mRvMain.setLayoutManager(gridLayoutManager);
      // mRvMain.setHasFixedSize(true); //是指item 高度固定

        MyAdapter mAdapter = new MyAdapter();

        mAdapter.setOnItemClickListener(new MyAdapter.OnRecycleViewClickListener() {
            @Override
            public void onItemClick(View view, int model) {
                Toast.makeText(MainActivity.this,"what a fuck ",Toast.LENGTH_SHORT).show();
            }
        });
        mRvMain.setAdapter(mAdapter);
    }

    private void initEVent() {


    }




    public static class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder>  {

        int[] imgDatas = {R.mipmap.g1, R.mipmap.g2,
                R.mipmap.g3,R.mipmap.g4,R.mipmap.g5,R.mipmap.g6,
                R.mipmap.g7,R.mipmap.g8,R.mipmap.g9,R.mipmap.g10,
                R.mipmap.g11,R.mipmap.g12,R.mipmap.g13};




        /*****************************************************/


        //定义接口回调 ,设置条目的点击事件 
        public interface OnRecycleViewClickListener{

            void  onItemClick(View view,int model);

        }

        OnRecycleViewClickListener mRecycleViewClickListener = null;

        public  void setOnItemClickListener (OnRecycleViewClickListener  listener){
            this.mRecycleViewClickListener = listener;
        }


        /**************************************************************/

        /**
         * 创建view 被layoutmanager  调用
         *
         * @param parent
         * @param viewType
         * @return
         */
        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item, parent, false);
            ViewHolder holder = new ViewHolder(view);

            return holder;
        }


        /**
         * 将数据和界面绑定
         *
         * @param holder
         * @param position
         */

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

            if(mRecycleViewClickListener!=null){
                holder.mImageView.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        int pos = holder.getLayoutPosition();
                        mRecycleViewClickListener.onItemClick(holder.mImageView,pos);
                    }
                });
            }

            holder.mImageView.setTag(imgDatas[position]);
            holder.mImageView.setImageResource(imgDatas[position]);
        }


        @Override
        public int getItemCount() {
            return imgDatas.length;
        }



        public class ViewHolder extends RecyclerView.ViewHolder {

            public  ImageView mImageView;

            public ViewHolder(View itemView) {
                super(itemView);
                mImageView =  (ImageView) itemView.findViewById(R.id.iv_item);
            }
        }
    }


}