android中listview的使用实例
user.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<!-- 用户名文本 -->
<TextView android:id="@+id/userNameId" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="10pt"
android:gravity="left" />
<!-- IP文本 -->
<TextView android:id="@+id/ipId" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:textSize="10pt"
android:gravity="right" />
</LinearLayout>
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout android:layout_width="fill_parent"
android:layout_height="wrap_content" android:orientation="vertical"
android:paddingLeft="10px" android:paddingRight="10px"
android:paddingTop="10px" android:paddingBottom="10px">
<ListView android:id="@id/android:list" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:scrollbars="vertical"
android:drawSelectorOnTop="true" />
</LinearLayout>
</LinearLayout>
ListViewActivity.java
package com.duoguo.android;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;
/**
* ListView的使用
*
* @author shyboy(897948924@qq.com)
*
*/
public class ListViewActivity extends ListActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ArrayList<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();// 实例化ArrayList链表，用来存放HashMap对象
// 实例化HashMap对象，用来存放用户名和IP
HashMap<String, String> map1 = new HashMap<String, String>();
map1.put("user_name", "shyboy");
map1.put("user_ip", "192.168.0.1");
HashMap<String, String> map2 = new HashMap<String, String>();
map2.put("user_name", "playboy");
map2.put("user_ip", "192.168.0.2");
HashMap<String, String> map3 = new HashMap<String, String>();
map3.put("user_name", "simplyboy");
map3.put("user_ip", "192.168.0.3");
// 添加HashMap集合到ArrayList链表中
list.add(map1);
list.add(map2);
list.add(map3);
SimpleAdapter listSimpleAdapter = new SimpleAdapter(this, list,
R.layout.user, new String[] { "user_name", "user_ip" },
new int[] { R.id.userNameId, R.id.ipId });// 实例化适配器
this.setListAdapter(listSimpleAdapter);
}
// 当点击ListView内容时触发该事件
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
System.out.println("id is:" + id);
System.out.println("position is:" + position);
}
}
