使用数组适配器加载列表

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.prace3.MainActivity">

    <ListView
        android:id="@+id/lv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"></ListView>
</LinearLayout>

MainActivity.java

package com.example.prace3;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class MainActivity extends Activity {
    private ListView lv;
    private ArrayAdapter<String> arr_adapter;
    private SimpleAdapter sim_Adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //初始化控件
        lv = findViewById(R.id.lv);
        String[] arr_data = {"列表项1","列表项2","列表项3","列表项4","列表项5"};
        //ArrayAdapter(context:上下文，TextViewResourceId：当前listView加载的每一个列表项所对应的布局文件，objects：数据源);
        arr_adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,arr_data);
        //视图加载器
        lv.setAdapter(arr_adapter);
    }
}

页面效果如图