为ListView加入点击和长按响应

程序效果是实现一个ListView,ListView里面有标题，内容和图片，并加入点击和长按响应。

首先在xml里面定义一个ListView

Xml代码

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:id="@+id/LinearLayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android&quot;&gt;
<ListView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/ListView01"
/>
</LinearLayout>

定义ListView每个条目的Layout，用RelativeLayout实现：

Xml代码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="@+id/RelativeLayout01"
android:layout_width="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android&quot;
android:layout_height="wrap_content"
android:paddingBottom="4dip"
android:paddingLeft="12dip"
android:paddingRight="12dip">
<ImageView
android:paddingTop="12dip"
android:layout_alignParentRight="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/ItemImage"
/>
<TextView
android:text="TextView01"
android:layout_height="wrap_content"
android:textSize="20dip"
android:layout_width="fill_parent"
android:id="@+id/ItemTitle"
/>
<TextView
android:text="TextView02"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_below="@+id/ItemTitle"
android:id="@+id/ItemText"
/>
</RelativeLayout>

最后在Activity里面调用和加入Listener,具体见注释：

Java代码

package com.ray.test;

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

import android.app.Activity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnCreateContextMenuListener;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.AdapterView.OnItemClickListener;

public class TestListView extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//绑定Layout里面的ListView
ListView list = (ListView) findViewById(R.id.ListView01);

    //生成动态数组，加入数据  
    ArrayList<HashMap<String, Object>> listItem = new ArrayList<HashMap<String, Object>>();  
    for(int i=0;i<10;i++)  
    {  
        HashMap<String, Object> map = new HashMap<String, Object>();  
        map.put("ItemImage", R.drawable.checked);//图像资源的ID  
        map.put("ItemTitle", "Level "+i);  
        map.put("ItemText", "Finished in 1 Min 54 Secs, 70 Moves! ");  
        listItem.add(map);  
    }  
    //生成适配器的Item和动态数组对应的元素  
    SimpleAdapter listItemAdapter = new SimpleAdapter(this,listItem,//数据源   
        R.layout.list_items,//ListItem的XML实现  
        //动态数组与ImageItem对应的子项          
        new String[] {"ItemImage","ItemTitle", "ItemText"},   
        //ImageItem的XML文件里面的一个ImageView,两个TextView ID  
        new int[] {R.id.ItemImage,R.id.ItemTitle,R.id.ItemText}  
    );  

    //添加并且显示  
    list.setAdapter(listItemAdapter);  

    //添加点击  
    list.setOnItemClickListener(new OnItemClickListener() {  

        @Override  
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,  
                long arg3) {  
            setTitle("点击第"+arg2+"个项目");  
        }  
    });  

  //添加长按点击  
    list.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {  

        @Override  
        public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) {  
            menu.setHeaderTitle("长按菜单-ContextMenu");     
            menu.add(0, 0, 0, "弹出长按菜单0");  
            menu.add(0, 1, 0, "弹出长按菜单1");     
        }  
    });   
}  

//长按菜单响应函数  
@Override  
public boolean onContextItemSelected(MenuItem item) {  
    setTitle("点击了长按菜单里面的第"+item.getItemId()+"个项目");   
    return super.onContextItemSelected(item);  
}  

}