Go语言视频零基础入门到精通

javalearner

import javax.microedition.lcdui.*;
   
import javax.microedition.midlet.*;
   
import java.util.*;
   
public class FlowControl extends MIDlet{
   
   boolean init = true;
   
   public FlowControl(){
   
   Navigator.display = Display.getDisplay(this);
   
   Navigator.midlet = this;
   
}
   

   
protected void startApp(){
   
   Navigator.current = Navigator.MAIN_SCREEN;   Navigator.show(null); if(init){
   
   Alert splash = new Alert("启动画面");   splash.setType(AlertType.CONFIRMATION); //用户确认类型   splash.setTimeout(5000);
   
   Navigator.display.setCurrent(splash);
   
   init = false;
   
   }
   
}
   
protected void pauseApp(){}
   
protected void destroyApp(boolean u){} }
   
  
   
   
   

   
  
  

1. 
   
2. class Navigator{
   
3. final public static int MAIN_SCREEN = 1;
   
4. final public static int GAME_SCREEN = 2;
   
5. final public static int SET_SCREEN = 3;
   
6. final public static int SET_HELP_SCREEN = 4;
   
7. final public static int GAME_HELP_SCREEN = 5;
   
8. public static MIDlet midlet;
   
9. public static Display display;
   
10. public static int current = 1;
    
11. public static void show(Object obj){
    
12. switch(current){
    
13.   case MAIN_SCREEN:
    
14.    display.setCurrent(MainScreen.getInstance());
    
15.    break;
    
16.   case GAME_SCREEN:
    
17.    display.setCurrent(GameScreen.getInstance());
    
18.    break;
    
19.   case SET_SCREEN:
    
20.    display.setCurrent(SetScreen.getInstance());
    
21.    break;
    
22.   case SET_HELP_SCREEN:
    
23.    display.setCurrent(new HelpScreen((String)obj));
    
24.    break;
    
25.   case GAME_HELP_SCREEN:
    
26.    display.setCurrent(new HelpScreen((String)obj));
    
27.    break;
    
28. }
    
29. }
    
30. public static void flow(String cmd){
    
31. switch(current){
    
32.    case MAIN_SCREEN:
    
33.     if(cmd.equals("开始")){
    
34.      current = GAME_SCREEN;
    
35.      show(null);
    
36.     }else if(cmd.equals("设置")){
    
37.      current = SET_SCREEN;
    
38.      show(null);
    
39.     }else if(cmd.equals("版权声明")){
    
40.      display.setCurrent(CopyrightScreen.getInstance());
    
41.      show(null);
    
42.     }else if(cmd.equals("离开")){
    
43.       midlet.notifyDestroyed();
    
44.     }
    
45.     break;
    
46.   case GAME_SCREEN:
    
47.     if(cmd.equals("规则介绍")){
    
48.       current = GAME_HELP_SCREEN;
    
49.       show("游戏规则介绍");
    
50.     }else if(cmd.equals("返回")){
    
51.       current = MAIN_SCREEN;
    
52.       show(null);
    
53.     }
    
54.     break;
    
55.   case SET_SCREEN:
    
56.      if(cmd.equals("设置说明")){
    
57.        current = SET_HELP_SCREEN;
    
58.        show("设置方式");
    
59.      }else if(cmd.equals("返回")){
    
60.         current = MAIN_SCREEN;
    
61.         show(null);
    
62.      }
    
63.     break;
    
64. 
    
65.   case GAME_HELP_SCREEN:
    
66.     if(cmd.equals("返回")){
    
67.       current = GAME_SCREEN;
    
68.       show(null);
    
69.     }
    
70.     break;
    
71.   case SET_HELP_SCREEN:
    
72.     if(cmd.equals("返回")){
    
73.      current = SET_SCREEN;
    
74.      show(null);
    
75.    }
    
76.    break;
    
77. }
    
78. }
    
79. }
    
80. //帮助说明界面 Singleton模式
    
81. class HelpScreen extends Form implements CommandListener{
    
82.   public HelpScreen(String c){
    
83.    super("帮助说明");
    
84.    append(c);
    
85.    addCommand(new Command("返回",Command.OK,1));
    
86.    setCommandListener(this);
    
87.   }
    
88.   public void commandAction(Command c,Displayable d){
    
89.     Navigator.flow(c.getLabel());
    
90.   }
    
91. }
    
92. //版权界面 Singleton模式
    
93. class CopyrightScreen extends Alert{
    
94.   private static Displayable instance;
    
95.   synchronized public static Displayable getInstance(){
    
96.    if(instance == null){
    
97.      instance = new CopyrightScreen();
    
98.    }
    
99.   return instance;
    
100.   }
     
101.   private CopyrightScreen(){
     
102.    super("版权声明");
     
103.    setString("此应用程序之版权归NIIT教研室所有");
     
104.    setType(AlertType.INFO);
     
105.    setTimeout(Alert.FOREVER);
     
106. }
     
107. }
     
108. //主界面 Singleton模式
     
109. class MainScreen extends List implements CommandListener{
     
110. private static Displayable instance;
     
111. synchronized public static Displayable getInstance(){
     
112. if(instance == null){
     
113.   instance = new MainScreen();
     
114. }
     
115. return instance;
     
116. }
     
117. private MainScreen(){
     
118.   super("主菜单",List.IMPLICIT);
     
119.   append("开始",null);
     
120.   append("设置",null);
     
121.   append("版权声明",null);
     
122.   append("离开",null);
     
123.   setCommandListener(this);
     
124. }
     
125. public void commandAction(Command c,Displayable d){
     
126.   String cmd = getString(getSelectedIndex());
     
127.   Navigator.flow(cmd);
     
128. }
     
129. }
     
130. //设置主界面 Singleton模式
     
131. class SetScreen extends Form implements CommandListener{
     
132.   private static Displayable instance;
     
133.   TextField url = null;
     
134.   Gauge volume = null;
     
135.   synchronized public static Displayable getInstance(){
     
136.    if(instance == null){
     
137.     instance = new SetScreen();
     
138.    }
     
139.    return instance;
     
140.   }
     
141.   private SetScreen(){
     
142.    super("设置");
     
143.    url = new TextField("请输入服务器的设置","socket://127.0.0.1:99",40,TextField.URL);
     
144.    append(url);
     
145.    volume = new Gauge("音量",true,10,3);
     
146.    append(volume);
     
147.    addCommand(new Command("设置说明",Command.HELP,1));
     
148.    addCommand(new Command("返回",Command.BACK,1));
     
149.    setCommandListener(this);
     
150. }
     
151. public void commandAction(Command c,Displayable d){
     
152.   Navigator.flow(c.getLabel());
     
153. }
     
154. }
     
155. //游戏主界面 Singleton模式
     
156. class GameScreen extends Form implements CommandListener{
     
157.   private static Displayable instance;
     
158.   TextField url = null;
     
159.   Gauge volume = null;
     
160.   synchronized public static Displayable getInstance(){
     
161.    if(instance == null){
     
162.     instance = new GameScreen();
     
163.    }
     
164.    return instance;
     
165.   }
     
166.   private GameScreen(){
     
167.    super("游戏");
     
168.    addCommand(new Command("规则介绍",Command.HELP,1));
     
169.    addCommand(new Command("返回",Command.BACK,1));
     
170.    setCommandListener(this);
     
171.   }
     
172. public void commandAction(Command c,Displayable d){
     
173.     Navigator.flow(c.getLabel());
     
174. }
     
175. }
     
176. 运行图：
     
177. [img]http://img.javaxxz.com/2014/10/11/081114296.jpg[/img]

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