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来自：http://www.oschina.net/question/54100_33274
下拉列表 Spinner。
Spinner的使用，可以极大提高用户的体验性。当需要用户选择的时候，可以提供一个下拉列表将所有可选的项列出来。供用户选择。 Demo如下，可以留作参考 一、使用数组作为数据源 1.新建一个android的工程 2.工程的layout.xml文件如下：声明一个TextView控件和一个Spinner控件01 | <?xml version="1.0" encoding="utf-8"?> |
02 | <LinearLayout |
03 | xmlns:android="http://schemas.android.com/apk/res/android" |
04 | android:layout_width="fill_parent" |
05 | android:layout_height="fill_parent" |
06 | android:orientation="vertical" |
07 | > |
08 | <TextView android:id="@+id/spinnerText" |
09 | android:layout_width="fill_parent" |
10 | android:layout_height="wrap_content"></TextView> |
11 | <Spinner android:id="@+id/Spinner01" |
12 | android:layout_width="fill_parent" |
13 | android:layout_height="wrap_content"></Spinner> |
14 | </LinearLayout> |
01 | import android.app.Activity; |
02 | import android.os.Bundle; |
03 | import android.view.View; |
04 | import android.widget.AdapterView; |
05 | import android.widget.AdapterView.OnItemSelectedListener; |
06 | import android.widget.ArrayAdapter; |
07 | import android.widget.Spinner; |
08 | import android.widget.TextView; |
09 |
10 | public class SpinnerActivity extends Activity { |
11 | |
12 | private static final String[] m={ "A型","B型","O型","AB型","其他"}; |
13 | private TextView view ; |
14 | private Spinner spinner; |
15 | private ArrayAdapter<String> adapter; |
16 | @Override |
17 | protected void onCreate(Bundle savedInstanceState) { |
18 | // TODO Auto-generated method stub |
19 | super.onCreate(savedInstanceState); |
20 | setContentView(R.layout.spinner); |
21 | |
22 | view = (TextView) findViewById(R.id.spinnerText); |
23 | spinner = (Spinner) findViewById(R.id.Spinner01); |
24 | //将可选内容与ArrayAdapter连接起来 |
25 | adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,m); |
26 | |
27 | //设置下拉列表的风格 |
28 | adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); |
29 | |
30 | //将adapter 添加到spinner中 |
31 | spinner.setAdapter(adapter); |
32 | |
33 | //添加事件Spinner事件监听 |
34 | spinner.setOnItemSelectedListener(new SpinnerSelectedListener()); |
35 | |
36 | //设置默认值 |
37 | spinner.setVisibility(View.VISIBLE); |
38 | |
39 | } |
40 | |
41 | //使用数组形式操作 |
42 | class SpinnerSelectedListener implements OnItemSelectedListener{ |
43 |
44 | public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, |
45 | long arg3) { |
46 | view.setText("你的血型是："+m[arg2]); |
47 | } |
48 |
49 | public void onNothingSelected(AdapterView<?> arg0) { |
50 | } |
51 | } |
52 | } |
01 | <?xml version="1.0" encoding="utf-8"?> |
02 | <resources> |
03 | <string-array name="plantes"> |
04 | <item>NOKIA</item> |
05 | <item>MOTO</item> |
06 | <item>HTC</item> |
07 | <item>LG</item> |
08 | <item>其他</item> |
09 | </string-array> |
10 | </resources> |
01 | import android.app.Activity; |
02 | import android.os.Bundle; |
03 | import android.view.View; |
04 | import android.widget.AdapterView; |
05 | import android.widget.AdapterView.OnItemSelectedListener; |
06 | import android.widget.ArrayAdapter; |
07 | import android.widget.Spinner; |
08 | import android.widget.TextView; |
09 |
10 | public class SpinnerActivity extends Activity { |
11 | |
12 | private TextView view2; |
13 | private Spinner spinner2; |
14 | private ArrayAdapter adapter2; |
15 |
16 | @Override |
17 | protected void onCreate(Bundle savedInstanceState) { |
18 | // TODO Auto-generated method stub |
19 | super.onCreate(savedInstanceState); |
20 | setContentView(R.layout.spinner); |
21 |
22 | spinner2 = (Spinner) findViewById(R.id.spinner02); |
23 | view2 = (TextView) findViewById(R.id.spinnerText02); |
24 |
25 | //将可选内容与ArrayAdapter连接起来 |
26 | adapter2 = ArrayAdapter.createFromResource(this, R.array.plantes, android.R.layout.simple_spinner_item); |
27 |
28 | //设置下拉列表的风格 |
29 | adapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); |
30 |
31 | //将adapter2 添加到spinner中 |
32 | spinner2.setAdapter(adapter2); |
33 |
34 | //添加事件Spinner事件监听 |
35 | spinner2.setOnItemSelectedListener(new SpinnerXMLSelectedListener()); |
36 |
37 | //设置默认值 |
38 | spinner2.setVisibility(View.VISIBLE); |
39 | |
40 | } |
41 | |
42 | //使用XML形式操作 |
43 | class SpinnerXMLSelectedListener implements OnItemSelectedListener{ |
44 | public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, |
45 | long arg3) { |
46 | view2.setText("你使用什么样的手机："+adapter2.getItem(arg2)); |
47 | } |
48 |
49 | public void onNothingSelected(AdapterView<?> arg0) { |
50 | |
51 | } |
52 | |
53 | } |
54 | } |
4、运行效果如下：
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