1 <?xml version="1.0" encoding="utf-8"?>
 2 <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:orientation="horizontal" 
 7     tools:context=".mainactivity">
 8     
 9     <spinner
10         android:id="@+id/spinner1"
11         android:layout_width="wrap_content"
12         android:layout_height="wrap_content"
13         android:layout_margintop="5dp"
14         android:layout_weight="1" />
15 
16     <spinner
17         android:id="@+id/spinner2"
18         android:layout_width="wrap_content"
19         android:layout_height="wrap_content"
20         android:layout_margintop="5dp"
21         android:layout_weight="1" />
22     
23     <spinner
24         android:id="@+id/spinner3"
25         android:layout_width="wrap_content"
26         android:layout_height="wrap_content"
27         android:layout_margintop="5dp"
28         android:layout_weight="1" />
29     
30 </linearlayout>

  1 package com.example.spinner;
  2 
  3 import android.os.bundle;
  4 import android.app.activity;
  5 import android.view.menu;
  6 import android.view.view;
  7 import android.widget.adapterview;
  8 import android.widget.adapterview.onitemselectedlistener;
  9 import android.widget.arrayadapter;
 10 import android.widget.spinner;
 11 import android.widget.textview;
 12 import android.widget.toast;
 13 
 14 public class mainactivity extends activity {
 15 
 16     private stringbuffer stringbuffer;
 17     protected string str3;
 18     protected string str2;
 19     protected string str1;
 20    
 21 
 22     @override
 23     protected void oncreate(bundle savedinstancestate) {
 24         super.oncreate(savedinstancestate);
 25         setcontentview(r.layout.activity_spinner);
 26         
 27         stringbuffer = new stringbuffer();
 28         
 29         //获取界面布局文件中的spinner组件
 30         spinner spinner1 = (spinner) findviewbyid(r.id.spinner1);
 31         spinner spinner2 = (spinner) findviewbyid(r.id.spinner2);
 32         spinner spinner3 = (spinner) findviewbyid(r.id.spinner3);
 33         
 34         //字符串数组
 35         string[] stringarr1 = {"机器人学院","智慧城市学院","特教学院","城市轨道交通学院"};
 36         string[] stringarr2 = {"软件工程","机械工程","机器人工程","人工智能"};
 37         string[] stringarr3 = {"2016级","2017级","2018级","2019级"};
 38         
 39         //创建arrayadapter对象
 40         arrayadapter<string> adapter1 = new arrayadapter(mainactivity.this,android.r.layout.simple_spinner_item,stringarr1);
 41         arrayadapter<string> adapter2 = new arrayadapter(mainactivity.this,android.r.layout.simple_spinner_item,stringarr2);
 42         arrayadapter<string> adapter3 = new arrayadapter(mainactivity.this,android.r.layout.simple_spinner_item,stringarr3);
 43         
 44         //为spinner1设置adapter
 45         spinner1.setadapter(adapter1);
 46         
 47         //为spinner1设置选中事件监听器
 48         spinner1.setonitemselectedlistener(new onitemselectedlistener(){
 49 
 50             @override
 51             public void onitemselected(adapterview<?> parent, view view,
 52                     int position, long id) {
 53                 // todo auto-generated method stub
 54                 
 55                 textview tv = (textview) view;
 56                 str1 = tv.gettext().tostring();
 57                 add();
 58                 
 59             }
 60 
 61             @override
 62             public void onnothingselected(adapterview<?> parent) {
 63                 // todo auto-generated method stub
 64                 
 65             }
 66             
 67         } );
 68         
 69         //为spinner2设置adapter
 70         spinner2.setadapter(adapter2);
 71         
 72         //为spinner2设置选中事件监听器
 73         spinner2.setonitemselectedlistener(new onitemselectedlistener(){
 74 
 75             @override
 76             public void onitemselected(adapterview<?> parent, view view,
 77                     int position, long id) {
 78                 // todo auto-generated method stub
 79                 
 80                 textview tv = (textview) view;
 81                 str2 = tv.gettext().tostring();
 82                 add();
 83             }
 84 
 85             @override
 86             public void onnothingselected(adapterview<?> parent) {
 87                 // todo auto-generated method stub
 88                 
 89             }
 90             
 91         });
 92         
 93         //为spinner3设置adapter
 94         spinner3.setadapter(adapter3);
 95         
 96         //为spinner3设置选中事件监听器
 97         spinner3.setonitemselectedlistener(new onitemselectedlistener(){
 98 
 99             @override
100             public void onitemselected(adapterview<?> parent, view view,
101                     int position, long id) {
102                 // todo auto-generated method stub
103                 
104                 textview tv = (textview) view;
105                 str3 = tv.gettext().tostring();
106                 add();
107                  
108             }
109 
110             @override
111             public void onnothingselected(adapterview<?> parent) {
112                 // todo auto-generated method stub
113             
114             }
115             
116         });
117         
118     }
119 
120 
121     protected void add() {
122         // todo auto-generated method stub
123         stringbuffer.delete(0, stringbuffer.length());
124         show(str1,str2,str3);
125         toast.maketext(mainactivity.this, stringbuffer, toast.length_long)
126           .show();
127     }
128 
129 
130     private void show(string str1, string str2, string str3) {
131         // todo auto-generated method stub
132         stringbuffer.append(str1).append("--");
133         stringbuffer.append(str2).append("--");
134         stringbuffer.append(str3);
135     }
136 
137 
138     @override
139     public boolean oncreateoptionsmenu(menu menu) {
140         // inflate the menu; this adds items to the action bar if it is present.
141         getmenuinflater().inflate(r.menu.main, menu);
142         return true;
143     }
144     
145 }