Android 中的ImageSwitcher 和Gallery結合使用

（1）gallery 即綁定一個adapter 即可。

（2）Activity 實現ViewFactory。並實現其中的構造方法

makeView();。這個方法主要是返回一個view對象。並為switcher設置imageSwitcher.setFactory(this);--這個Factory 是用來切換ImageSwitcher的view的。

實現OnItemSelectedListener為gallery重寫

onNothingSelected();

onItemSelected（）;

1. package com.bsn.cc;  
2.   
3.   
4.   
5.   
6. import Android.app.Activity;  
7. import android.content.Context;  
8. import android.content.res.TypedArray;  
9. import android.os.Bundle;  
10. import android.view.View;  
11. import android.view.ViewGroup;  
12. import android.view.animation.AnimationUtils;  
13. import android.widget.AdapterView;  
14. import android.widget.AdapterView.OnItemClickListener;  
15. import android.widget.AdapterView.OnItemSelectedListener;  
16. import android.widget.Gallery.LayoutParams;  
17. import android.widget.BaseAdapter;  
18. import android.widget.Gallery;  
19. import android.widget.ImageSwitcher;  
20. import android.widget.ImageView;  
21. import android.widget.ViewSwitcher.ViewFactory;  
22.   
23. public class ImageSwitcherActivity extends Activity implements OnItemSelectedListener,ViewFactory{  
24.     private Gallery gallery;  
25.     private ImageSwitcher imageSwitcher;  
26.     private ImageAdapter imageAdapter;  
27.     private int []resId={  
28.             R.drawable.item1, R.drawable.item2, R.drawable.item3, R.drawable.item4,  
29.             R.drawable.item5, R.drawable.item6, R.drawable.item7,  
30.             R.drawable.item8, R.drawable.item9, R.drawable.item10,  
31.             R.drawable.item11, R.drawable.item12, R.drawable.item13,  
32.             R.drawable.item14, R.drawable.item15   
33.     };  
34.     @Override  
35.     public void onCreate(Bundle savedInstanceState) {  
36.         super.onCreate(savedInstanceState);  
37.         setContentView(R.layout.main);  
38.           
39.         gallery = (Gallery) findViewById(R.id.dddd);  
40.         imageAdapter = new ImageAdapter(this);  
41.         gallery.setAdapter(imageAdapter);  
42.         gallery.setOnItemSelectedListener(this);  
43.         imageSwitcher = (ImageSwitcher) findViewById(R.id.imageswitcher);  
44.         imageSwitcher.setFactory(this);  
45.   
46.         imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this,  
47.                 android.R.anim.fade_in));  
48.         imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this,  
49.                 android.R.anim.fade_out));  
50.     }  
51.     private class ImageAdapter extends BaseAdapter{  
52.         int mGalleryItemBackground;  
53.         private Context mContext;  
54.         public ImageAdapter(Context context)  
55.         {  
56.             mContext = context;  
57.             // 這裡為自定義屬性R.styleable.Gallery ..中的屬性定義的是gallery的默認邊框   
58.             TypedArray typedArray = obtainStyledAttributes(R.styleable.Gallery);  
59.             mGalleryItemBackground = typedArray.getResourceId(  
60.                     R.styleable.Gallery_android_galleryItemBackground, 0);                        
61.         }  
62.         @Override  
63.         public int getCount() {  
64.             return Integer.MAX_VALUE;  
65.         }  
66.         @Override  
67.         public Object getItem(int arg0) {  
68.             // TODO Auto-generated method stub   
69.             return arg0;  
70.         }  
71.         @Override  
72.         public long getItemId(int position) {  
73.             // TODO Auto-generated method stub   
74.             return position;  
75.         }  
76.         @Override  
77.         public View getView(int position, View convertView, ViewGroup parent) {  
78.             ImageView imageView=new ImageView(mContext);  
79.             imageView.setImageResource(resId[position]);  
80.             imageView.setScaleType(ImageView.ScaleType.FIT_XY);  
81.             imageView.setLayoutParams(new Gallery.LayoutParams(136,88));  
82.             imageView.setBackgroundResource(mGalleryItemBackground);  
83.             return imageView;  
84.         }  
85.     }  
86.     @Override  
87.     public View makeView() {  
88.           
89.         ImageView imageView = new ImageView(this);  
90.         imageView.setBackgroundColor(0xFF000000);  
91.         imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);  
92.         imageView.setLayoutParams(new ImageSwitcher.LayoutParams(  
93.                 LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));  
94.   
95.         return imageView;  
96.     }  
97.     @Override  
98.     public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,  
99.             long arg3) {  
100.         imageSwitcher.setImageResource(resId[arg2 % resId.length]);  
101.           
102.     }  
103.     @Override  
104.     public void onNothingSelected(AdapterView<?> arg0) {  
105.           
106.     }  
107. }