mono for android Listview 里面按钮 view Button click 注册方法 并且传值给其他Activity 主要是context


需求：为Listview的Item里面的按钮Button添加一个事件，单击按钮时通过事件传值并跳转到新的页面。

环境：mono

效果：

 

 

 

 

 布局代码

   主布局

 

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:orientation="vertical"
 4     android:layout_width="fill_parent"
 5     android:layout_height="fill_parent">
 6     <ListView
 7         android:id="@+id/myList"
 8         android:layout_width="fill_parent"
 9         android:layout_height="fill_parent" />
10 </LinearLayout>
MainLayout

 

Item布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="10dp"
              >

  <TextView
    android:id="@+id/txt"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    />

  <Button
    android:id="@+id/btn"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true"
    />
</RelativeLayout>
ListviewItemlayout

 

 

 MainActivity

 

 1 using System;
 2 
 3 using Android.App;
 4 using Android.Content;
 5 using Android.Runtime;
 6 using Android.Views;
 7 using Android.Widget;
 8 using Android.OS;
 9 using System.Collections.Generic;
10 
11 namespace ListViewItemBtnClick
12 {
13     [Activity(Label = "ListViewItemBtnClick", MainLauncher = true, Icon = "@drawable/icon")]
14     public class Activity1 : Activity
15     {
16         ListView listView;
17 
18         protected override void OnCreate(Bundle bundle)
19         {
20             base.OnCreate(bundle);
21 
22             SetContentView(Resource.Layout.Main);
23 
24 
25             listView = FindViewById<ListView>(Resource.Id.myList);
26 
27          
28             //填充Listview
29             getList(listView);
30 
31 
32 
33         }
34         
35         //获取Listview
36         private void getList(ListView listview)
37         {
38 
39             Adapter goodsAdapter = new Adapter(this);
40             List<Item> itemList = new List<Item>();
41             Item item = new Item();
42 
43             //给Item赋值 并且添加到list里面
44             for (int i = 0; i <10; i++)
45             {
46                 item.title = i + "|标题|";
47                 item.button = i + "btn";
48                 itemList.Add(item);
49             }
50             //给adapter中添加list的值
51             foreach (Item item1 in itemList)
52             {
53                 goodsAdapter.Add(item1);
54             }
55             //将adapter的值付给listview
56             listview.Adapter = goodsAdapter;
57         }
58 
59     }
60 }
MainActivity

 

Item类

    class Item
    {
        //标题 textview
        public string title { get; set; }
        //按钮
        public string button { get; set; }
    }
Item

 

Adapter配置数据

 1 namespace ListViewItemBtnClick
 2 {
 3     class Adapter:ArrayAdapter<Item>,View.IOnClickListener
 4     {
 5 
 6         private Context context;
 7 
 8         public Adapter(Context context):base(context,0){
 9             //通过构造函数获取context
10             this.context = context;
11         
12         }
13          
14 
15 
16 
17 
18         public override View GetView(int position, View convertView, ViewGroup parent)
19         {
20             View view;
21             //如果convertView不为空则直接使用
22             if (convertView!=null)
23             {
24                 view = convertView;
25 
26             }
27 
28             else
29             {
30                 view = LayoutInflater.From(this.Context).Inflate(Resource.Layout.ListItem, null);
31 
32             }
33 
34             //设置title的值
35             TextView title = view.FindViewById<TextView>(Resource.Id.txt);
36             Button btn = view.FindViewById<Button>(Resource.Id.btn);
37 
38             Item item = GetItem(position);
39 
40             title.Text = item.title + position;
41             //给每个按钮添加一个tag tag的值为position 或者自定义的ID
42             btn.SetTag(Resource.Id.btn,position);
43             btn.Text ="--"+ position+"---";
44             //注册事件
45             btn.SetOnClickListener(this);
46             return view;
47         }
48 
49         
50 
51         public void OnClick(View v)
52         {
53             //获得点击的按钮
54             Button btn = v as Button;
55             //获得tag
56             int id =  Convert.ToInt32(btn.GetTag(btn.Id));
57 
58             Intent it = new Android.Content.Intent();
59 
60             it.SetClass(context,typeof(Activity2));
61             it.PutExtra("pos", id);
62             //注意！启动新Activity
63             context.StartActivity(it);
64         }
65     }
66 }
Adapter


在其他地方显示数据

1  string PosValue = Intent.GetStringExtra("pos");
2             
3 
4             Toast.MakeText(this, PosValue.ToString(), ToastLength.Long).Show();
View Code

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posted @ 2014-02-28 14:14  查海涅  阅读(2089)  评论(1)  编辑  收藏  举报