mono for Android ListView

ListView控件使用

1.ListView是一个列表布局控件，在列表中显示简单的数据：

新建一个解决方案，配置main.axml的文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/Ll_SC"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
             android:background="#ff909090"
            android:layout_margin="5dip"
            >
            <ListView
                android:id="@+id/Lv_SC"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"            android:cacheColorHint="#00000000"/>    
       </LinearLayout>

 C#后台代码content.cs：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;
namespace LV{
    [Activity(Label = "Content", MainLauncher = true, Icon = "@drawable/icon")]
    public class content : Activity
    {
protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);
            SetContentView(Resource.Layout.Main);
ListView Lv_SC = FindViewById<ListView>(Resource.Id.Lv_SC);
Lv_SC.Adapter = new ArrayAdapter<string>(this, Android.Resource.Layout.SimpleListItem1, list);}
 static readonly string[] list = new string[] { "baidu", "xinlang", "guge","jingdong","taobao","58","CSDN","fanke","sougou"};}

2.使用自定义列表适配器显示数据：

添加一个布局文件ListItemView.axml,此文件就是Lv_SC控件中行的布局

<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="60dip"
    android:stretchColumns="1">
    <TableRow>
        <ImageView
            android:id="@+id/Image"
            android:layout_width="60dip"
            android:layout_height="fill_parent"
            android:layout_gravity="center_vertical" />
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:orientation="vertical"
            android:layout_marginLeft="10px"
            android:layout_marginTop="10px">
            <TextView
                android:id="@+id/Text1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
            <TextView
                android:id="@+id/Text2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
        </LinearLayout>
          </TableRow>
</TableLayout>

 C#后台代码content.cs：

using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
   using Android.App;
  using Android.Content;
   using Android.OS;
  using Android.Runtime;
  using Android.Views;
 using Android.Widget;
 using Android.Util;
 using Java.Util;
 using Login;
 namespace Login
 {
 [Activity(Label = "Content", MainLauncher = true, Icon = "@drawable/icon")]
 public class content : Activity
 {       
 protected override void OnCreate(Bundle bundle)
 {
 base.OnCreate(bundle);
 SetContentView(Resource.Layout.Main);
 LinearLayout Ll_SC = FindViewById<LinearLayout>(Resource.Id.Ll_SC);
           //Lv_SC.Adapter = new ArrayAdapter<string>(this, Android.Resource.Layout.SimpleListItem1, list);
            Lv_SC.Adapter =new CustomListAdapter(this);
//添加ListItem事件
 //Lv_SC.ItemClick += new EventHandler<AdapterView.ItemClickEventArgs>(Lv_Click);
 }
 }
 // 设置一个数据对象
 public class ScClass
 {
 public string Name
 {
 get;
 set;
 }
 public string Description
 {
 get;
 set;
 }
 public int Image
 {
 get;
 set;
 }
 }
 //ListView自定义Adater
 public class CustomListAdapter : BaseAdapter
 {
 Activity context;
 public List<ScClass> items;
 public CustomListAdapter(Activity context) 
 : base()
 {
 this.context = context;
 //初始化数据
 this.items = new List<ScClass>() {
 new ScClass() { Name = "beijing", Description = "北京北京北京", Image = Resource.Drawable.Image1 },
 new ScClass() { Name = "上shanghai", Description = "上海上海上海", Image = Resource.Drawable.Image2 },
 new ScClass() { Name = "jiangxi", Description = "江西江西江西", Image = Resource.Drawable.Image3 },
 new ScClass() { Name = "wuhan", Description = "武汉武汉武汉", Image = Resource.Drawable.Image4 }, 
 };
 }
 //返回ListItem行数
          public override int Count
 {
 get { return items.Count; }
 }
 public override Java.Lang.Object GetItem(int position)
 {
 return position;
 }
 public override long GetItemId(int position)
 {
 return position;
 }
 public override View GetView(int position, View convertView, ViewGroup parent)
 {
 var item = items[position];         
 var view = (convertView ?? 
 context.LayoutInflater.Inflate(
 Resource.Layout.ListItemView, 
 parent, 
 false)) as LinearLayout;
 var imageItem = view.FindViewById(Resource.Id.Image) as ImageView;
 var textTop = view.FindViewById(Resource.Id.Text1) as TextView;
 var textBottom = view.FindViewById(Resource.Id.Text2) as TextView;
 imageItem.SetImageResource(item.Image);
 textTop.SetText(item.Name, TextView.BufferType.Normal);
 textBottom.SetText(item.Description, TextView.BufferType.Normal);
 return view;
 }
 public ScClass GetItemAtPosition(int position)
 {
 return items[position];
 }
 
 }
}

注：

当在listview的item中嵌入了checkbox, webview等事件优先级高的控件时，listview的onItemClick事件会被屏蔽无响应。。。

这时我们可以通过将item中控件的focuse设为false来解决问题。

使用静态方法：在布局文件中添加 android:focusable="false" 

使用动态方法：在代码中调用 XXXView.setFocusable(false)