Go语言视频零基础入门到精通

javalearner

1. import javax.microedition.midlet.*;
   
2. import javax.microedition.lcdui.*;
   
3. public class PhotoMIDlet extends MIDlet implements CommandListener
   
4. {
   
5.   String list1[]={"1","2","3"};
   
6.   private Command okCommand=new Command("确定",Command.OK,1);
   
7.   private Command backCommand=new Command("返回",Command.BACK,1);
   
8.   private Command exitCommand=new Command("退出",Command.EXIT,1);
   
9.   private List list2=new List("Photo",List.EXCLUSIVE,list1,null);
   
10.     private Display display=null;
    
11.     private Form form=new Form("Photo");
    
12.     private Image img=null;
    
13. public PhotoMIDlet(){
    
14.   list2.addCommand(okCommand);
    
15.   list2.addCommand(exitCommand);
    
16.   list2.addCommand(backCommand);
    
17.   list2.setCommandListener(this);
    
18.   form.addCommand(okCommand);
    
19.   form.addCommand(exitCommand);
    
20.   form.addCommand(backCommand);
    
21.   form.setCommandListener(this);
    
22.   
    
23. }
    
24.   public void startApp(){
    
25.   if(display==null)
    
26.     display=Display.getDisplay(this);
    
27.   display.setCurrent(list2);
    
28. }
    
29.   public void pauseApp(){
    
30. 
    
31. }
    
32.   public void destroyApp(boolean unkown){
    
33. 
    
34. }
    
35.   public void commandAction(Command cmd,Displayable dis){
    
36.     if(cmd==okCommand){
    
37.      int sIn=list2.getSelectedIndex();
    
38.      String str=(String)list2.getString(sIn);
    
39.      try{
    
40.        img=Image.createImage("/"+str+".png");
    
41.     }catch(Exception e){}
    
42.    form.append(img);
    
43.    display.setCurrent(form);
    
44. }
    
45. else if(cmd==backCommand){
    
46.   form.deleteAll();
    
47.   display.setCurrent(list2);
    
48.   }
    
49. else if(cmd==exitCommand){
    
50. destroyApp(true);
    
51. notifyDestroyed();
    
52. }
    
53. }
    
54. }
    
55. [img]http://www.java3z.com/cwbwebhome/article/article7/img/6363we.jpg[/img]
    

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源码下载：http://203.93.208.26/kj/cwb/dir7/PhotoMIDlet.zip