ArrayAdapter使用方法

ArrayAdapter是一个简单的适配器，他的作用是将一个数组中的内容放入listView中。listView的item必须为textView。

MainActivity.java

package com.kale.listview;

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

public class MainActivity extends Activity {

    ListView redLv;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        redLv = (ListView)findViewById(R.id.red_listView_id);
        
        String []arr01 = {"01","02","03","04","05","06"};
        //将数组送入arrayAdapter，这里的item对象必须是一个textView。
        //系统已经默认将数组中的信息放入textView了，所以无需指定额外的id
        ArrayAdapter<String> adapter01 = new ArrayAdapter<String>(this, R.layout.list_item,arr01);
        //设置adapter
        redLv.setAdapter(adapter01);
    }
}

xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <!-- 设置红色分割线的listView -->
    <ListView 
        android:id="@+id/red_listView_id"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:divider="#f00"
        android:dividerHeight="2dp"
        android:layout_gravity="center"
        android:headerDividersEnabled="false"/>
    

</LinearLayout>

listview_item.xml

<?xml version="1.0" encoding="utf-8"?>
 <TextView
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/item_textView_id"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:layout_gravity="center_horizontal"
     android:text="Large Text"
     android:gravity="center_horizontal"
     android:textAppearance="?android:attr/textAppearanceLarge" />