安卓listview简单使用

效果图

1.编写main.xml布局代码

<?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">

    <ListView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/mainListView1"/>

</LinearLayout>

2.编写MainActivity.class代码

import android.app.Activity;
import android.os.Bundle;
import android.widget.*;
import java.util.*;

public class MainActivity extends Activity 
{
    private ListView lv;
    private ArrayAdapter<String> adp;
    private ArrayList<String> array;
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        lv=findViewById(R.id.mainListView1);
        array=new ArrayList<String>();
        for(int i=0;i<18;i++){
            array.add("测试"+i);
        }
        
        adp=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,array);
        lv.setAdapter(adp);
        //更新数据
        adp.notifyDataSetChanged();
    }
}