J2ME手机游戏设计案例源代码-TestList.doc

*TestListMID/* * To change this template, choose Tools | Templates * and open the template in the editor. */import javax.microedition.lcdui.Choice;import javax.microedition.lcdui.Command;import javax.microedition.lcdui.CommandListener;import javax.microedition.lcdui.Display;import javax.microedition.lcdui.Displayable;import javax.microedition.lcdui.Image;import javax.microedition.lcdui.List;import javax.microedition.midlet.*;/* * author Administrator */public class TestListMID extends MIDlet implements CommandListener /这里注意如何使用/CommandListener 这个接口 private final static Command CMD_EXIT = new Command(Exit, Command.EXIT, 1); private final static Command CMD_BACK = new Command(Back, Command.BACK, 1); private Display display; private List mainList; private List exclusiveList; private List implicitList; private List multipleList; private boolean firstTime; Image imageArray= null; public TestListMID() display = Display.getDisplay(this); String stringArray = 选项 A,选项 B,选项 C,选项 D; /待传入进行初始化的 String 数组，即 Choice 选项的文字部分。 /这里只是为 Image数组进行初始化。 exclusiveList = new List(Exclusive, Choice.EXCLUSIVE, stringArray,imageArray); exclusiveList.addCommand(CMD_BACK); exclusiveList.addCommand(CMD_EXIT); exclusiveList.setCommandListener(this); /ExlcusiveList 的声明 implicitList = new List(Implicit, Choice.IMPLICIT, stringArray, imageArray); implicitList.addCommand(CMD_BACK); implicitList.addCommand(CMD_EXIT); implicitList.setCommandListener(this); /ImplicitList 的声明 multipleList = new List(Multiple, Choice.MULTIPLE, stringArray, imageArray); multipleList.addCommand(CMD_BACK); multipleList.addCommand(CMD_EXIT); multipleList.setCommandListener(this); /MutipleList 的声明 firstTime = true; protected void startApp() if(firstTime) imageArray = null; try Image icon = Image.createImage(/Icon.png); /注意！这里的路径是相对路径，请大家千万注意这里的细节问题 imageArray = new Image icon,icon,icon; catch (java.io.IOException err) / ignore the image loading failure the application can recover. String stringArray = Exclusive,Implicit,Multiple; mainList = new List(Choose type, Choice.IMPLICIT, stringArray,imageArray); mainList.addCommand(CMD_EXIT); mainList.setCommandListener(this); display.setCurrent(mainList); firstTime = false; protected void pauseApp() protected void destroyApp(boolean unconditional) public void commandAction(Command c, Displayable d) /注意这里是如何实现 CommandListener 这个接口的！ if (d.equals(mainList) if (c = List.SELECT_COMMAND) if (d.equals(mainList) switch (List)d).getSelectedIndex() case 0: display.setCurrent(exclusiveList); break; case 1: display.setCurrent(implicitList); break; case 2: display.setCurrent(multipleList); break