列表选择Spinner

1.只用XML配置来显示列表

在res\values中添加一个arrays.xml

 1 <?xml version="1.0" encoding="utf-8"?>

 2 <resources>

 3 

 4     <string-array name="books">

 5         <item>口里奇才</item>

 6         <item>凸显</item>

 7         <item>下雨目前</item>

 8         <item>越来越一直在于</item>

 9     </string-array>

10 

11 </resources>

在主页面的xml中添加Spinner

1     <Spinner

2         android:id="@+id/spi3"

3         android:layout_width="match_parent"

4         android:layout_height="wrap_content"

5         android:entries="@array/books" >

6     </Spinner>

效果

 

2.用后台动态添加

布局：

1     <Spinner

2         android:id="@+id/spi"

3         android:layout_width="match_parent"

4         android:layout_height="wrap_content" >

5     </Spinner>

添加数据类

 1 package com.example.myadapter;

 2 

 3 import java.util.ArrayList;

 4 import java.util.HashMap;

 5 import java.util.List;

 6 import java.util.Map;

 7 

 8 import com.example.androidspinner.R;

 9 

10 public class Myadapter {

11 

12     public Myadapter() {

13         // TODO Auto-generated constructor stub

14     }

15     

16     public static List<String> getData(){

17         List<String> list=new ArrayList<String>();

18         list.add("北京");

19         list.add("武汉");

20         list.add("广州");

21         return list;

22     }

23     

24 }

主程序中添加数据绑定

 1 package com.example.androidspinner;

 2 

 3 import java.util.List;

 4 import java.util.Map;

 5 

 6 import com.example.myadapter.Myadapter;

 7 

 8 import android.os.Bundle;

 9 import android.app.Activity;

10 import android.view.Menu;

11 import android.view.View;

12 import android.widget.AdapterView;

13 import android.widget.AdapterView.OnItemSelectedListener;

14 import android.widget.ArrayAdapter;

15 import android.widget.SimpleAdapter;

16 import android.widget.Spinner;

17 

18 public class AndroidSpinnerActivity extends Activity {

19     private Spinner spi;

20 

21     @Override

22     protected void onCreate(Bundle savedInstanceState) {

23         super.onCreate(savedInstanceState);

24         setContentView(R.layout.activity_android_spinner);

25         spi = (Spinner) this.findViewById(R.id.spi);

26         List<String> list = Myadapter.getData();

27         ArrayAdapter<String> adapter = new ArrayAdapter<String>(

28                 AndroidSpinnerActivity.this,

29                 android.R.layout.simple_spinner_item, list);

30         spi.setAdapter(adapter);

31 

32                 }

33 

34           
40     }

41 

42     @Override

43     public boolean onCreateOptionsMenu(Menu menu) {

44         // Inflate the menu; this adds items to the action bar if it is present.

45         getMenuInflater().inflate(R.menu.activity_android_spinner, menu);

46         return true;

47     }

48 

49 }

3.选项加图标

布局：

1     <Spinner

2         android:id="@+id/spi2"

3         android:layout_width="match_parent"

4         android:layout_height="wrap_content" >

5     </Spinner>

添加数据类

 1 package com.example.myadapter;

 2 

 3 import java.util.ArrayList;

 4 import java.util.HashMap;

 5 import java.util.List;

 6 import java.util.Map;

 7 

 8 import com.example.androidspinner.R;

 9 

10 public class Myadapter {

11 

12     public Myadapter() {

13         // TODO Auto-generated constructor stub

14     }

15     

16         

17     public static List<Map<String, Object>> getMapData(){

18         List<Map<String, Object>> list=new ArrayList<Map<String,Object>>();

19         Map<String, Object> map1=new HashMap<String, Object>();

20         map1.put("logo", R.drawable.add);

21         map1.put("appname", "北京");

22         list.add(map1);

23         

24         Map<String, Object> map2=new HashMap<String, Object>();

25         map2.put("logo", R.drawable.application);

26         map2.put("appname", "武汉");

27         list.add(map2);

28         return list;

29         

30     }

31 

32 }

主程序中添加数据绑定

 1 package com.example.androidspinner;

 2 

 3 import java.util.List;

 4 import java.util.Map;

 5 

 6 import com.example.myadapter.Myadapter;

 7 

 8 import android.os.Bundle;

 9 import android.app.Activity;

10 import android.view.Menu;

11 import android.view.View;

12 import android.widget.AdapterView;

13 import android.widget.AdapterView.OnItemSelectedListener;

14 import android.widget.ArrayAdapter;

15 import android.widget.SimpleAdapter;

16 import android.widget.Spinner;

17 

18 public class AndroidSpinnerActivity extends Activity {

19         private Spinner spi2;

20 

21     @Override

22     protected void onCreate(Bundle savedInstanceState) {

23         super.onCreate(savedInstanceState);

24         setContentView(R.layout.activity_android_spinner);

25 

26         spi2 = (Spinner) this.findViewById(R.id.spi2);

27 

28         List<Map<String, Object>> listMap = Myadapter.getMapData();

29 

30         SimpleAdapter simpleAdapter = new SimpleAdapter(

31                 AndroidSpinnerActivity.this, listMap, R.layout.items,

32                 new String[] { "logo", "appname" }, new int[] { R.id.imgview,

33                         R.id.labview });

34         spi2.setAdapter(simpleAdapter);

35         

36         spi2.setOnItemSelectedListener(new OnItemSelectedListener() {

37 

38             @Override

39             public void onItemSelected(AdapterView<?> parent, View arg1,

40                     int position, long id) {

41                 String appname=((Map<String,Object>)spi2.getItemAtPosition(position)).get("appname").toString();

42                 setTitle(appname);

43             }

44 

45             @Override

46             public void onNothingSelected(AdapterView<?> arg0) {

47                 // TODO Auto-generated method stub

48                 

49             }

50         });

51     }

52 

53     @Override

54     public boolean onCreateOptionsMenu(Menu menu) {

55         // Inflate the menu; this adds items to the action bar if it is present.

56         getMenuInflater().inflate(R.menu.activity_android_spinner, menu);

57         return true;

58     }

59 

60 }