ListView组件

最新推荐文章于 2023-07-20 10:36:34 发布

vipdev

最新推荐文章于 2023-07-20 10:36:34 发布

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分类专栏： android组件文章标签： listview android

本文链接：https://blog.youkuaiyun.com/vipdev/article/details/42392637

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本文展示了如何在Android中使用ListView组件，并通过SimpleAdapter绑定数据。示例代码包括创建ArrayList、HashMap，然后用这些数据创建SimpleAdapter，最后将Adapter设置到ListView以显示数据。

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package com.geyongchao.te;

import java.util.ArrayList;
import java.util.HashMap;

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

public class TeActivity extends Activity {
private String[] datas = new String[]{"a","b","c"};

private String[] strs = new String[] {
      "first", "second", "third", "fourth", "fifth"
      };//定义一个String数组用来显示ListView的内容private ListView lv;/** Called when the activity is first created. */
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
//        ListView lv = (ListView) findViewById(R.id.lv1);//得到ListView对象的引用 /*为ListView设置Adapter来绑定数据*/
//        ListView lv1 = (ListView) this.findViewById(R.id.lv1);
//        lv1.setAdapter(new ArrayAdapter<String>(getBaseContext(),android.R.layout.simple_list_item_1,datas ));
        ListView list = (ListView) findViewById(R.id.lv1);

        //生成动态数组，并且转载数据
        ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();
        for(int i=0;i<30;i++)
        {
            HashMap<String, String> map = new HashMap<String, String>();
            map.put("ItemTitle", "This is Title.....");
            //map.put("ItemText", "This is text.....");
            mylist.add(map);
        }
        //生成适配器，数组===》ListItem
        SimpleAdapter mSchedule = new SimpleAdapter(this, //没什么解释
        mylist,//数据来源
        R.layout.listitem,//ListItem的XML实现
        //动态数组与ListItem对应的子项
        new String[] {"ItemTitle", "ItemText"},
       //ListItem的XML文件里面的两个TextView ID
        new int[] {R.id.ItemTitle,R.id.ItemText});
        //添加并且显示
        list.setAdapter(mSchedule);


    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
        android:layout_width="fill_parent"
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical"
        android:layout_height="wrap_content"
        android:id="@+id/MyListItem"
        android:paddingBottom="3dip"
        android:paddingLeft="10dip">
        <TextView
                android:layout_height="wrap_content"
                android:layout_width="fill_parent"
                android:id="@+id/ItemTitle"
                android:textSize="30dip">
        </TextView>
        <TextView
                android:layout_height="wrap_content"
                android:layout_width="fill_parent"
                android:id="@+id/ItemText">
        </TextView>
</LinearLayout>