8.列表视图ListView控件的实例:联系人界面

1.目标效果

  在页面中布局一个ListView控件，鼠标点击相应的选项，在其下方显示选择的内容
 该工程在csdn中的下载链接
  

2.页面布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity"
android:background="@drawable/bg1">

<ListView
android:id="@+id/listview"
android:layout_width="fill_parent"
android:layout_height="330dp"
android:divider="@android:color/darker_gray"
android:dividerHeight="2dp"
android:entries="@array/telephone" />

<TextView
android:id="@+id/show"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:singleLine="false"
android:hint="这里显示您的选择"
android:textSize="20dp"/>

</LinearLayout>

  然后为下拉列表引用的entries添加资源文件.依旧在res/values文件中添加一个array.xml文件，如下：

<?xml version="1.0" encoding="utf-8"?>
<resources>
<string-array name="telephone">
<item>张飞  13125455213</item>
<item>李逵  18852013147</item>
<item>刘备  15152013147</item>
<item>赵云  12578966541</item>
<item>杜甫  18574122102</item>
<item>移动  10086</item>
</string-array>

</resources>

3.事件响应

package com.example.listviewdemo;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity
{
ListView listview=null;
TextView show=null;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

listview=(ListView) findViewById(R.id.listview);
show=(TextView) findViewById(R.id.show);

//为列表视图添加事件响应
listview.setOnItemClickListener(new OnItemClickListener() {

@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
show.setText("你将要拨打给："+arg0.getItemAtPosition(arg2));

}
});
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}

4.运行效果