荐 RecyclerView(1)实现列表,并添加监听事件

1实现效果图

2 学习参考

https://www.jianshu.com/p/69ac902e688c
请仔细看上面的参考文档,多读几遍能够更好的了解Adapter,View,ViewHolder,RecyclerView之间的关系

3 代码实现

1 android studio引入RecyclerView包

找到app文件夹下面的build.gradle
引入implementation ‘com.android.support:recyclerview-v7:26.1.0’
注意下图所示2者版本号一定要一样,

引入后点击Rebuild Project即可

2 布局文件

activity_main.xml文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <!--显示通讯录里面的信息-->
    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />

</LinearLayout>

recycleritem.xml文件

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    >
    <ImageView
        android:id="@+id/item_imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/item_textView1"
            android:layout_width="wrap_content"
            android:layout_height="20dp"
            />
        <TextView
            android:id="@+id/item_textView2"
            android:layout_width="wrap_content"
            android:layout_height="20dp" />
    </LinearLayout>



</LinearLayout>

所需图片image.png

所需对象存储类Information.java

/**
 * Created by Chen on 2020/7/24.
 */
//数据对象类
public class Information {
    private String textView1;
    private String textView2;
    private Object imageView;

    public Information(String textView1, String textView2, Object imageView){
        this.textView1=textView1;
        this.textView2=textView2;
        this.imageView=imageView;
    }
    public String getTextView1() {
        return textView1;
    }

    public void setTextView1(String textView1) {
        this.textView1 = textView1;
    }

    public String getTextView2() {
        return textView2;
    }

    public void setTextView2(String textView2) {
        this.textView2 = textView2;
    }

    public Object getImageView() {
        return imageView;
    }

    public void setImageView(Object imageView) {
        this.imageView = imageView;
    }
}

适配器类MyAdapter

package com.example.chen.myapplication;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.support.v7.widget.RecyclerView;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import java.util.List;

/**
 * Created by Chen on 2020/7/24.
 */

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    private List<Information> informationList;
    static class ViewHolder extends RecyclerView.ViewHolder {
        View InformationView;//创建视图对象,用于点击视图的时候实现
        TextView item_textView1,item_textView2;
        ImageView item_imageView;
        public ViewHolder(View view){
            super(view);
            InformationView=view;
            item_textView1=view.findViewById(R.id.item_textView1);
            item_textView2=view.findViewById(R.id.item_textView2);
            item_imageView=view.findViewById(R.id.item_imageView);
        }
    }
    public MyAdapter(List<Information> List){
        informationList =List;
    }
    @Override //创建viewholder
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
       View view=  LayoutInflater.from(parent.getContext()).inflate(R.layout.recycleritem,parent,false);
        final ViewHolder holder = new ViewHolder(view);
        //整个视图添加监听事件
        holder.InformationView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                int position =holder.getAdapterPosition();
                Information information=informationList.get(position);
                Toast.makeText(view.getContext(),"你点击了"+information.getTextView1(),Toast.LENGTH_SHORT).show();
            }
        });
        //图片添加监听事件
        holder.item_imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                int position =holder.getAdapterPosition();
                Information information=informationList.get(position);
                Toast.makeText(view.getContext(),"你点击了图片"+information.getTextView1(),Toast.LENGTH_SHORT).show();
            }
        });

        return holder;
    }

    @Override //绑定数据
    public void onBindViewHolder(ViewHolder holder, int position) {
        Information information = informationList.get(position);
        holder.item_textView1.setText(information.getTextView1());
        holder.item_textView2.setText(information.getTextView2());
        holder.item_imageView.setImageResource((int) information.getImageView());

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



}

主类MainActivity

package com.example.chen.myapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private RecyclerView recyclerView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        recyclerView=findViewById(R.id.recycler_view);

        initView();
    }

    private void initView() {
        //获取数据信息
        List<Information> informationList=getInformatica();
        LinearLayoutManager layoutManager=new LinearLayoutManager(this);
        recyclerView.setLayoutManager(layoutManager);
        MyAdapter myAdapter=new MyAdapter(informationList);
        recyclerView.setAdapter(myAdapter);
    }

    private List<Information>  getInformatica() {
        List<Information> informationList =new ArrayList<>();
        for(int i=0;i<30;i++){
            Information information=new Information("标题"+i,"显示的内容"+i,R.drawable.image);
            informationList.add(information);
        }
        return informationList;
    }
}

由于GitHub还不会上传代码,等我熟悉后,把代码上传.以上代码可以自己复制实现

本文地址：https://blog.csdn.net/hongfei568718926/article/details/107559107