1.0 新建項目，由於ListView的局限性，RecyclerView是一種很好取代ListView的控件，可以靈活實現多種布局。

2.0 新建項目RecyclerviewTest，目錄如下：

3.0 這裏需要在app/build.gradle中配置，導入依賴包：

dependencies {
    implementation fileTree(dir: ‘libs‘, include: [‘*.jar‘])
    implementation ‘com.android.support:appcompat-v7:28.0.0‘
    implementation ‘com.android.support.constraint:constraint-layout:1.1.3‘
    implementation ‘com.android.support:recyclerview-v7:28.0.0‘
 

    testImplementation ‘junit:junit:4.12‘
    androidTestImplementation ‘com.android.support.test:runner:1.0.2‘
    androidTestImplementation ‘com.android.support.test.espresso:espresso-core:3.0.2‘
}

紅色標簽這行加入，後面的版本號和support:appcompat一致即可。

4.0 將之前項目中的構造類復制過來，省去重復編寫代碼的時間。

Province.java

package com.example.recyclerviewtest;

 
public class Province {
    private String name;
    public Province(String name){
        this.name = name;
    }

    public String getName() {
        return name;
    }
}

ProvinceAdapter.java，這裏代碼進行了修改，並在代碼中做以說明：

package com.example.recyclerviewtest;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.List;

 
public class ProvinceAdapter extends RecyclerView.Adapter<ProvinceAdapter.ViewHolder> {
    private List<Province> mProvinceList;
    private int resourceId;


//    定義一個內部類ViewHolder,該類繼承自RecyclerView.ViewHolder。
//    需要傳入一個View參數，通常是RecyclerView子項最外層布局
    static class ViewHolder extends RecyclerView.ViewHolder {
        //        ImageView provinceImage;
        TextView provinceName;

        public ViewHolder(View view) {
            super(view);
            provinceName = (TextView) view.findViewById(R.id.province_name);
        }
    }

//    該構造函數作用是將數據源賦值給一個全局變量mProvinceList
    public ProvinceAdapter(List<Province> provinceList) {
        mProvinceList = provinceList;
    }

//  由於ProvinceAdapter是繼承自RecyclerView.Adapter，
//  所以需要重寫三個方法：
// onCreateViewHolder() ：創建ViewHolder實例，將局部加載進來
//  onBindViewHolder() ：對RecyclerView子項數據進行賦值
//  getItemCount()

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.province_item,
                viewGroup,
                false);
        ViewHolder holder = new ViewHolder(view);
        return holder;
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position
    ) {
        Province province = mProvinceList.get(position);
        holder.provinceName.setText(province.getName());
    }

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

5.0 在activity_main.xml布局文件中，寫入RecyclerView布局，因為RecyclerView不是SDK內置布局，所以需要把全稱寫進去

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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=".MainActivity">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

6.0 province_item.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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:orientation="vertical"
    android:layout_width="100dp"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/province_name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="18dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:gravity="center_horizontal"
        android:layout_marginTop="10dp"/>
</android.support.constraint.ConstraintLayout>

7.0 MainActivity.java

package com.example.recyclerviewtest;

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 List<Province> provincelist = new ArrayList<>();
    private String[] data = {
            "廣西壯族自治區", "內蒙古自治區", "寧夏回族自治區", "西藏藏族自治區", "新疆維吾爾自治區", "香港特別行政區", "澳門特別行政區",
            "北京市", "天津市", "上海市", "重慶市", "吉林省", "遼寧省", "黑龍江省",
            "河北省", "河南省", "安徽省", "甘肅省", "山東省",
            "湖南省", "湖北省", "江蘇省", "浙江省", "江西省",
            "雲南省", "廣西省", "貴州省", "海南省", "臺灣省",};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        initProvince();
        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);

//        調用下面這行代碼可以實現布局橫向排列
        layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);

//        GridLayoutManager 實現網格布局
//        StaggeredGridLayoutManager 實現瀑布流布局


//        和ListView不同的地方在於，ListView的布局排列是由自身去管理
//        而RecyclerView則將這個工作交給LayoutManager，它制定了一套可擴展的布局排列接口
//        子類只要按照接口的規範來實現，就能定制出不同排列方式的布局了
        recyclerView.setLayoutManager(layoutManager);
        ProvinceAdapter adapter = new ProvinceAdapter(provincelist);
        recyclerView.setAdapter(adapter);
    }


    public void initProvince() {
        for (String dataone : data) {
            Province province = new Province(dataone);
            provincelist.add(province);
        }
    }
}

8.0 運行效果如下：

【Android】13.0 UI開發（四）——列表控件RecyclerView的橫向布局排列實現