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 >
7 <TextView
8 android:id="@+id/TextView1"
9 android:layout_width="fill_parent"
10 android:layout_height="wrap_content"
11 android:text="@string/hello"
12 />
13 <Spinner
14 android:id="@+id/Spinner1"
15 android:layout_width="wrap_content"
16 android:layout_height="wrap_content"
17 android:layout_centerHorizontal="true"
18 />
19 </LinearLayout>
1 import android.app.Activity;
2 import android.os.Bundle;
3 import android.view.View;
4 import android.widget.AdapterView;
5 import android.widget.ArrayAdapter;
6 import android.widget.Spinner;
7 import android.widget.TextView;
8
9 public class Activity01 extends Activity
10 {
11 private static final String[] m_Countries = { "O型", "A型", "B型", "AB型", "其他" };
12
13 private TextView m_TextView;
14 private Spinner m_Spinner;
15 private ArrayAdapter<String> adapter;
16
17
18 /** Called when the activity is first created. */
19 @Override
20 public void onCreate(Bundle savedInstanceState)
21 {
22 super.onCreate(savedInstanceState);
23 setContentView(R.layout.main);
24
25 m_TextView = (TextView) findViewById(R.id.TextView1);
26 m_Spinner = (Spinner) findViewById(R.id.Spinner1);
27
28 //将可选内容与ArrayAdapter连接
29 adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, m_Countries);
30
31 //设置下拉列表的风格
32 adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
33
34 //将adapter添加到m_Spinner中
35 m_Spinner.setAdapter(adapter);
36
37 //添加Spinner事件监听
38 m_Spinner.setOnItemSelectedListener(new Spinner.OnItemSelectedListener() {
39
40 @Override
41 public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3)
42 {
43 m_TextView.setText("你的血型是：" + m_Countries[arg2]);
44 //设置显示当前选择的项
45 arg0.setVisibility(View.VISIBLE);
46 }
47
48 @Override
49 public void onNothingSelected(AdapterView<?> arg0)
50 {
51 // TODO Auto-generated method stub
52 }
53
54 });
55 }
56 }
