Android之横向滑动列表

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前言

横向滑动列表有多种实现方式，也可以用tablayout，也可以用recyclerview，今天主要介绍recyclerview。

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一、效果图

二、使用步骤

1.xml布局

代码如下（示例）：

		<androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/hxlist"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="15dp"android:layout_marginTop="10dp"android:layout_marginRight="15dp"android:overScrollMode="never"android:scrollbars="none" />

2.代码

//实例化private lateinit var hxlist: RecyclerViewprivate lateinit var zpkjadapter: ZpkjAdapter1private lateinit var hxbean: MutableList<HomeHxBean>hxbean = mutableListOf()for (i in 1..5) {var item = HomeHxBean()item.id = "" + iitem.name = "广告任务$i"if (i == 1) {item.isxz = true} else {item.isxz = false}hxbean.add(item)}hxlist = rootView!!.findViewById(R.id.hxlist)hxlist.layoutManager = LinearLayoutManager(requireContext(),LinearLayoutManager.HORIZONTAL,false) //横向显示zpkjadapter = ZpkjAdapter1(hxbean, requireContext())hxlist.adapter = zpkjadapter

3.HomeHxBean

public class HomeHxBean {public String id;public String name;public boolean isxz=false;public String getId() {return id;}public void setId(String id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public boolean isIsxz() {return isxz;}public void setIsxz(boolean isxz) {this.isxz = isxz;}@Overridepublic String toString() {return "HomeHxBean{" +"id='" + id + '\'' +", name='" + name + '\'' +", isxz=" + isxz +'}';}
}

3.adapter

/*** 作者：CaoLiulang* ❤* Date：2024/12/24* ❤* 模块 横向listadapter*/
public class ZpkjAdapter1 extends RecyclerView.Adapter<ZpkjAdapter1.ViewHolder> {private List<HomeHxBean> list;private Context context;public ZpkjAdapter1(List<HomeHxBean> list, Context context) {this.list = list;this.context = context;}/*** 加载更多** @param mPageList*/public void setData(List<HomeHxBean> mPageList) {try {if (mPageList != null) {int previousSize = 0;try {previousSize = list.size();} catch (Exception e) {previousSize = 0;}int sizez = previousSize + 2;list.addAll(mPageList);notifyItemRangeInserted(sizez, mPageList.size());}} catch (Exception e) {e.printStackTrace();}}@Overridepublic ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.hxlistmy_item1, parent, false);ViewHolder viewHolder = new ViewHolder(view);return viewHolder;}/*** 类似GetView** @param holder* @param position*/@Overridepublic void onBindViewHolder(final ViewHolder holder, @SuppressLint("RecyclerView") final int position) {System.out.println("数据打印：-->" + list.get(position).name);holder.text_szr.setText(list.get(position).name);if (list.get(position).isxz) {holder.text_szr.setBackgroundResource(R.drawable.bzhs_lvse_20);holder.text_szr.setTextColor(Color.parseColor("#ffffff"));} else {holder.text_szr.setBackgroundResource(R.drawable.bzhs_huise_20);holder.text_szr.setTextColor(Color.parseColor("#4d061C1A"));}holder.text_szr.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {for (int i = 0; i < list.size(); i++) {list.get(i).isxz = false;}list.get(position).isxz = true;notifyDataSetChanged();}});}//添加元素,需要告诉UI线程布局的变动public void update() {notifyDataSetChanged();}/*** 长度** @return*/@Overridepublic int getItemCount() {return list.size();}/*** 初始化组件*/class ViewHolder extends RecyclerView.ViewHolder {TextView text_szr;public ViewHolder(final View itemView) {super(itemView);text_szr = itemView.findViewById(R.id.text_szr);}}
}

4.item布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="wrap_content"android:layout_height="32dp"><TextViewandroid:id="@+id/text_szr"android:layout_width="wrap_content"android:layout_height="match_parent"android:background="@drawable/bzhs_lvse_20"android:gravity="center"android:paddingLeft="15dp"android:paddingRight="15dp"android:layout_marginRight="10dp"android:text="广告任务"android:textColor="#ffffff"android:textSize="16dp" /></LinearLayout>

5.两个drawable

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"><!-- 背景颜色 --><solid android:color="#02C7AB" /><!-- 控制边界线颜色和大小 --><strokeandroid:width="1dp"android:color="#02C7AB" /><!-- 控制圆角大小 --><corners android:radius="20dp" /></shape>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"><!-- 背景颜色 --><solid android:color="#F1F1F1" /><!-- 控制边界线颜色和大小 --><strokeandroid:width="1dp"android:color="#F1F1F1" /><!-- 控制圆角大小 --><corners android:radius="20dp" /></shape>

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总结

以上就是实现横向列表的功能了，很简单，需要自取。