引入第三方库

dependencies {
    implementation 'androidx.recyclerview:recyclerview:1.1.0'
}

xml简单布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".RecyclerViewActivity">
   <androidx.recyclerview.widget.RecyclerView
       android:id="@+id/recyclerView"
       android:layout_width="match_parent"
       android:layout_height="wrap_content">
   </androidx.recyclerview.widget.RecyclerView>
</RelativeLayout>

简单的数据格式

package com.example.viewpagerapplication.data;

import android.view.View;

public class Menu {
    public int age;
    public String name;

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

}

1.0组织数据 2.0.拿到recyclerView布局 // 3.0 布局模式（这里是线性布局） //4.new 一个 Adapter加入

package com.example.viewpagerapplication;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.os.Bundle;
import android.widget.LinearLayout;

import com.example.viewpagerapplication.data.Menu;

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

public class RecyclerViewActivity extends AppCompatActivity {
    protected RecyclerView recyclerView; // 主菜单
    private List<Menu> data = new ArrayList<>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_recycler_view);
        // 1.0组织数据
        for (int i = 0; i <100 ; i++) {
            Menu mainMenu = new Menu();
            mainMenu.setAge(i+10);
            mainMenu.setName("名称"+i);
            data.add(mainMenu);
        }
        //2.0.拿到recyclerView布局
        recyclerView = findViewById(R.id.recyclerView);
        // 3.0 布局模式（这里是默认线性布局）
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
        // 3.1 如果是需要横屏
//        linearLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
        recyclerView.setLayoutManager(linearLayoutManager);
        // 网格布局
//        GridLayoutManager gridLayoutManager = new GridLayoutManager(this,4);
//        recyclerView.setLayoutManager(gridLayoutManager);
        //4.new 一个 Adapter加入
        MainMenuAdapter mainMenuAdapter = new MainMenuAdapter(data,this);
        recyclerView.setAdapter(mainMenuAdapter);
    }
}

MainMenuAdapter里面的定义

package com.example.viewpagerapplication;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.example.viewpagerapplication.data.Menu;

import java.util.List;

public class MainMenuAdapter extends RecyclerView.Adapter<MainMenuAdapter.MenuViewHolder> {
    private List<Menu> data;
    private Context context;
    public MainMenuAdapter(List<Menu> data, Context context) {
        this.data = data;
        this.context = context;
    }

    @NonNull
    @Override
    public MenuViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = View.inflate(context, R.layout.recycler_view_item,null);
        return new MenuViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull MenuViewHolder holder, int position) {
        holder.tv.setText(data.get(position).name);
    }

    @Override
    public int getItemCount() {
        return data!=null ? data.size() :0;
    }
    public class MenuViewHolder extends RecyclerView.ViewHolder {
        private TextView tv;
        private ImageView imageV;
        public MenuViewHolder(@NonNull View itemView) {
            super(itemView);
            tv = itemView.findViewById(R.id.tv);
//            imageV = itemView.findViewById(R.id.imageViewSrc);
        }
    }
}

recycler_view_item简单布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"></TextView>
</LinearLayout>