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;
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;
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);
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);
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() {
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));
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]);
102. }
103. @Override
104. public void onNothingSelected(AdapterView<?> arg0) {
106. }
107. }