ImageSwitch切换图片

1. ImagSwitcherActivity:

 1 import android.app.Activity;
 2 import android.os.Bundle;
 3 import android.view.View;
 4 import android.view.View.OnClickListener;
 5 import android.widget.Button;
 6 import android.widget.ImageSwitcher;
 7 import android.widget.ImageView;
 8 import android.widget.LinearLayout;
 9 import android.widget.ViewSwitcher.ViewFactory;
10 
11 public class ImagSwitcherActivity extends Activity implements ViewFactory, OnClickListener
12 {
13     // 创建一个ImageSwitch对象
14     private ImageSwitcher imageSwitcher;
15 
16     // ImageSwitch的ID
17     private static final int SWITCHER_ID = 0x123456;
18 
19     // “上一张”按钮的ID
20     private static final int BUTTON_UP = 0x123457;
21 
22     // “下一张”按钮的ID
23     private static final int BUTTON_DOWN = 0x123458;
24 
25     // 索引
26     private int index = 0;
27 
28     private static final int[] imagelist = {R.drawable.imag1, R.drawable.imag2, R.drawable.imag3, R.drawable.imag4,
29             R.drawable.imag5, R.drawable.imag6, R.drawable.imag7, R.drawable.imag8, R.drawable.imag9, R.drawable.imag9,
30             R.drawable.imag10, R.drawable.imag11, R.drawable.imag12};
31 
32     @Override
33     public void onCreate(Bundle savedInstanceState)
34     {
35         super.onCreate(savedInstanceState);
36         // 创建一个线性布局LinearLayout
37         LinearLayout linearLayout = new LinearLayout(this);
38         //创建ImageSwitch对象
39         imageSwitcher = new ImageSwitcher(this);
40         //在线性布局中添加ImageSwitch
41         linearLayout.addView(imageSwitcher);
42         //设置imageSwitch的ID
43         imageSwitcher.setId(SWITCHER_ID);
44         //设置imagSwitch对象的数据源
45         imageSwitcher.setFactory(this);
46         imageSwitcher.setImageResource(imagelist[index]);
47         //设置显示上面创建的线性布局
48         setContentView(linearLayout);
49         
50         // 创建“下一张”按钮
51         Button nex_button = new Button(this);
52         nex_button.setId(BUTTON_DOWN);
53         nex_button.setText("下一张");
54         nex_button.setOnClickListener(this);
55         //(100, 100)->表示按鈕的大小
56         LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(100, 100);
57         linearLayout.addView(nex_button, params);
58         // 创建“上一张”按钮
59         Button up_button = new Button(this);
60         up_button.setId(BUTTON_UP);
61         up_button.setText("上一张");
62         up_button.setOnClickListener(this);
63         linearLayout.addView(up_button, params);
64     }
65 
66     @Override
67     public View makeView()
68     {
69         // 将所有图片通过ImageView来显示
70         return new ImageView(this);
71     }
72 
73     @Override
74     public void onClick(View arg0)
75     {
76         switch (arg0.getId())
77         {
78             // 下一页
79             case BUTTON_DOWN:
80                 index++;
81                 if (index > imagelist.length)
82                 {
83                     index = 0;
84                 }
85                 imageSwitcher.setImageResource(imagelist[index]);
86                 break;
87             // 上一张
88             case BUTTON_UP:
89                 index--;
90                 if (index < 0)
91                 {
92                     index = 0;
93                 }
94                 imageSwitcher.setImageResource(imagelist[index]);
95                 break;
96         }
97     }
98 }

 

2. 效果图：



posted @ 2011-10-30 13:19  程序学习笔记  阅读(3084)  评论(1)    收藏  举报