2023年6月27日发(作者：)

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2016/04/23 669 一、前言今天用了一下Spinner这个控件，主要是结合官网的例子来用的，不过官网的是把数据写在中的，

 某种程度上，不是很符合我们需要的，比较多的应该都是从数据库读出来，绑定上去的。下面是官网的例子：

 n/guides/android/user_interface/spinner/

 二、来个简单的Demo新建一个类

  1 public class MyType 2 { 3 public int TypeId { get; set; } 4 5 public string

TypeName { get; set; } 6 7 public override string ToString() 8 { 9 return TypeId + “-” +

TypeName;10 }11 }

 再来点数据

  1 public static class DB 2 { 3 public static List MyType Types { get; private set; } 4

5 static DB() 6 { 7 Types = new List MyType (); 8 (new MyType { TypeId = 1,

TypeName = “type1” }); 9 (new MyType { TypeId = 2, TypeName =

“type2” });10 (new MyType { TypeId = 3, TypeName = “type3” });11

(new MyType { TypeId = 4, TypeName = “type4” });12 }13 }

 最后写个Adapter，我们自定义的Adapter都需要继承BaseAdapter

  1 public class MyTypeAdapter : BaseAdapter MyType 2 { 3 private readonly

Activity _context; 4 private readonly IList MyType _types; 5 6 public

MyTypeAdapter(Activity context, IList MyType types) 7 { 8 this._context = context; 9

this._types = types;10 }11 12 public override MyType this[int position]13 {14 get15 {16

return this._types[position];17 }18 }19 20 public override int Count21 {22 get23 {24

return this._;25 }26 }27 28 public override long GetItemId(int position)29 {30

return position;31 }32 33 public override View GetView(int position, View convertView,

ViewGroup parent)34 {35 View view = convertView;36 if (view == null)37 {38 view =

this._e(ListItem1,