android中的spinner動態載入資料：

GroupPurchase.java

1. package jftt.txlong;   
2. import java.util.ArrayList;   
3. import java.util.List;   
4. import android.app.Activity;   
5. import android.os.Bundle;   
6. import android.util.Log;   
7. import android.view.View;   
8. import android.widget.AdapterView;   
9. import android.widget.ArrayAdapter;   
10. import android.widget.Button;   
11. import android.widget.ImageView;   
12. import android.widget.Spinner;   
13. import android.widget.TextView;   
14. publicclass GroupPurchase extends Activity {   
15. private Spinner changeCity;   
16. private Button refresh, pre, next;   
17. private TextView leftTime, detail, price, citygp;   
18. private ImageView images;   
19. private ArrayAdapter<String> adapter;   
20. private List<String> allItems;   
21. private String[] citys = { "北京市", "上海市", "天津市", "福州市" };   
22. @Override
23. publicvoid onCreate(Bundle savedInstanceState) {   
24. super.onCreate(savedInstanceState);   
25.         setContentView(R.layout.main);   
26.         initView();   
27.         allItems = new ArrayList<String>();   
28. for (int i = 0; i < citys.length; i++) {   
29.             allItems.add(citys[i]);   
30.         }   
31.         adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, allItems);   
32.         adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);   
33.         changeCity.setAdapter(adapter);   
34.         changeCity.setOnItemSelectedListener(new Spinner.OnItemSelectedListener() {   
35. @Override
36. publicvoid onItemSelected(AdapterView<?> arg0, View arg1,   
37. int arg2, long arg3) {   
38.                         citygp.setText(changeCity.getSelectedItem().toString() + "今天的團購");   
39.                         Log.i("info-----------", changeCity.getSelectedItem().toString());   
40.                     }   
41. @Override
42. publicvoid onNothingSelected(AdapterView<?> arg0) {   
43.                     }   
44.                 });   
45.         pre.setOnClickListener(new View.OnClickListener() {   
46. @Override
47. publicvoid onClick(View v) {   
48.                 Log.i("info-----------", "prefer button has pressed!!!");   
49.             }   
50.         });   
51.         next.setOnClickListener(new View.OnClickListener() {   
52. @Override
53. publicvoid onClick(View v) {   
54.                 Log.i("info-----------", "next button has pressed!!!");   
55.             }   
56.         });   
57.     }   
58. privatevoid initView() {   
59.         changeCity = (Spinner) findViewById(R.id.changeCity);   
60.         citygp = (TextView)findViewById(R.id.citygp);   
61.         refresh = (Button) findViewById(R.id.refresh);   
62.         pre = (Button) findViewById(R.id.pre);   
63.         next = (Button) findViewById(R.id.next);   
64.         leftTime = (TextView) findViewById(R.id.lefttime);   
65.         detail = (TextView) findViewById(R.id.detail);   
66.         images = (ImageView) findViewById(R.id.images);   
67.         price = (TextView) findViewById(R.id.price);   
68.     }   
69. }  

package jftt.txlong;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Spinner;
import android.widget.TextView;

public class GroupPurchase extends Activity {
	private Spinner changeCity;
	private Button refresh, pre, next;
	private TextView leftTime, detail, price, citygp;
	private ImageView images;
	private ArrayAdapter<String> adapter;
	private List<String> allItems;
	private String[] citys = { "北京市", "上海市", "天津市", "福州市" };

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		initView();
		
		allItems = new ArrayList<String>();
		for (int i = 0; i < citys.length; i++) {
			allItems.add(citys[i]);
		}
		adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, allItems);
		adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
		changeCity.setAdapter(adapter);
		changeCity.setOnItemSelectedListener(new Spinner.OnItemSelectedListener() {
					@Override
					public void onItemSelected(AdapterView<?> arg0, View arg1,
							int arg2, long arg3) {
						citygp.setText(changeCity.getSelectedItem().toString() + "今天的團購");
						Log.i("info-----------", changeCity.getSelectedItem().toString());
					}

					@Override
					public void onNothingSelected(AdapterView<?> arg0) {
					}
				});

		pre.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				Log.i("info-----------", "prefer button has pressed!!!");
			}
		});

		next.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				Log.i("info-----------", "next button has pressed!!!");
			}
		});
	}

	private void initView() {
		changeCity = (Spinner) findViewById(R.id.changeCity);
		citygp = (TextView)findViewById(R.id.citygp);
		refresh = (Button) findViewById(R.id.refresh);
		pre = (Button) findViewById(R.id.pre);
		next = (Button) findViewById(R.id.next);
		leftTime = (TextView) findViewById(R.id.lefttime);
		detail = (TextView) findViewById(R.id.detail);
		images = (ImageView) findViewById(R.id.images);
		price = (TextView) findViewById(R.id.price);
	}
}

 main.xml

1. <?xmlversion="1.0"encoding="utf-8"?>
2. <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
3. android:orientation="vertical"android:layout_width="fill_parent"
4. android:layout_height="fill_parent">
5. <RelativeLayoutandroid:layout_width="fill_parent"
6. android:layout_height="wrap_content">
7. <Spinnerandroid:id="@+id/changeCity"
8. android:layout_width="wrap_content"
9. android:layout_height="wrap_content"
10. android:layout_alignParentLeft="true"/>
11. <TextViewandroid:text="鄭州今日團購"
12. android:id="@+id/citygp"
13. android:layout_width="wrap_content"
14. android:layout_height="wrap_content"
15. android:layout_toLeftOf="@+id/refresh"/>
16. <Buttonandroid:text="重新整理"
17. android:id="@+id/refresh"
18. android:layout_width="wrap_content"
19. android:layout_height="wrap_content"
20. android:layout_alignParentRight="true"/>
21. </RelativeLayout>
22. <RelativeLayoutandroid:layout_width="fill_parent"
23. android:layout_height="wrap_content">
24. <TextViewandroid:text="剩餘時間："
25. android:layout_width="wrap_content"
26. android:layout_height="wrap_content"
27. android:layout_alignParentLeft="true"/>
28. <TextViewandroid:id="@+id/lefttime"
29. android:layout_width="wrap_content"
30. android:layout_height="wrap_content"
31. android:layout_alignParentTop="true"
32. android:layout_centerHorizontal="true"/>
33. <Buttonandroid:text="訂購"
34. android:id="@+id/order"
35. android:layout_width="wrap_content"
36. android:layout_height="wrap_content"
37. android:layout_alignParentRight="true"/>
38. </RelativeLayout>
39. <TextViewandroid:id="@+id/detail"
40. android:layout_width="fill_parent"
41. android:layout_height="wrap_content"/>
42. <LinearLayoutandroid:layout_width="fill_parent"
43. android:layout_height="wrap_content">
44. <ImageViewandroid:id="@+id/images"
45. android:layout_width="wrap_content"
46. android:layout_height="wrap_content"/>
47. <TextViewandroid:id="@+id/price"
48. android:layout_width="wrap_content"
49. android:layout_height="wrap_content"/>
50. </LinearLayout>
51. <RelativeLayoutandroid:layout_width="fill_parent"
52. android:layout_height="wrap_content">
53. <Buttonandroid:id="@+id/pre"
54. android:text="上一個"
55. android:layout_width="wrap_content"
56. android:layout_height="wrap_content"
57. android:layout_alignParentLeft="true"/>
58. <Buttonandroid:id="@+id/next"
59. android:text="下一個"
60. android:layout_width="wrap_content"
61. android:layout_height="wrap_content"
62. android:layout_alignParentRight="true"/>
63. </RelativeLayout>
64. </LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical" android:layout_width="fill_parent"
	android:layout_height="fill_parent">
	
	<RelativeLayout android:layout_width="fill_parent"
		android:layout_height="wrap_content">
		<Spinner android:id="@+id/changeCity" 
			android:layout_width="wrap_content"
			android:layout_height="wrap_content" 
			android:layout_alignParentLeft="true"/>
		<TextView android:text="鄭州今日團購" 
			android:id="@+id/citygp"
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content"
			android:layout_toLeftOf="@+id/refresh"/>
		<Button android:text="重新整理"
			android:id="@+id/refresh"
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content" 
			android:layout_alignParentRight="true"/>
	</RelativeLayout>
	
	<RelativeLayout android:layout_width="fill_parent"
		android:layout_height="wrap_content">
		<TextView android:text="剩餘時間：" 
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content" 
			android:layout_alignParentLeft="true"/>
		<TextView android:id="@+id/lefttime" 
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content" 
			android:layout_alignParentTop="true" 
			android:layout_centerHorizontal="true"/>
		<Button android:text="訂購" 
			android:id="@+id/order"
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content" 
			android:layout_alignParentRight="true"/>
	</RelativeLayout>
	
	<TextView android:id="@+id/detail"
		android:layout_width="fill_parent"
		android:layout_height="wrap_content"/>
	<LinearLayout android:layout_width="fill_parent"
		android:layout_height="wrap_content">
		<ImageView android:id="@+id/images"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"/>
		<TextView android:id="@+id/price"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"/>
	</LinearLayout>
	
	<RelativeLayout android:layout_width="fill_parent"
		android:layout_height="wrap_content">
		<Button android:id="@+id/pre"
			android:text="上一個"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"
			android:layout_alignParentLeft="true"/>
		<Button android:id="@+id/next"
			android:text="下一個"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"
			android:layout_alignParentRight="true"/>
	</RelativeLayout>
	
</LinearLayout>