//文件名 SimpleCustomMenu.java
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.*;
public class SimpleCustomMenu extends MIDlet implements CommandListener {
Display display;
Display pauseDisplay;
boolean isSplash = true;
MenuScreen menuScreen;
public SimpleCustomMenu() {
MenuScreen menuScreen = new MenuScreen();
display = Display.getDisplay(this);
display.setCurrent(menuScreen);
}
protected void startApp() throws MIDletStateChangeException {
}
protected void pauseApp() { }
protected void destroyApp (boolean flag) throws MIDletStateChangeException {}
public void commandAction (Command cmd, Displayable dis) {
}
}
////////////////////////////////////////////////////
//文件名 MenuScreen.java
import javax.microedition.lcdui.*;
public class MenuScreen extends Canvas implements Runnable {
static final Font lowFont = Font.getFont (Font.FACE_MONOSPACE, Font.STYLE_PLAIN, Font.SIZE_SMALL);
static final Font highFont = Font.getFont (Font.FACE_MONOSPACE, Font.STYLE_BOLD, Font.SIZE_MEDIUM);
static final int lowColor = 0x000000FF;
static final int highColor = 0x00FF0000;
static final int highBGColor = 0x00CCCCCC;
static int width;
static int height;
static int startHeight;
static final int spacing = highFont.getHeight()/2;
static final int NEW_GAME = 0;
static final int HIGH_SCORE = 1;
static final int SETTINGS = 2;
static final int HELP = 3;
static final int ABOUT = 4;
static final int MENU_ITEM_COUNT = 5;
static String[] mainMenu = new String[MENU_ITEM_COUNT];
static int menuIdx;
Thread menuThread;
public MenuScreen() {
width = getWidth();
height = getHeight();
mainMenu[0] = "开始新游戏";
mainMenu[1] = "显示得分";
mainMenu[2] = "设置";
mainMenu[3] = "帮助";
mainMenu[4] = "关于";
startHeight = (highFont.getHeight() * mainMenu.length) + ((mainMenu.length-1) * spacing);
startHeight = (height - startHeight) / 2;
menuIdx = 0;
menuThread = new Thread(this);
menuThread.start();
}
public void run() {
while(true) {
repaint();
}
}
public void paint(Graphics g) {
g.setColor(0x00FFFFFF);
g.fillRect(0,0,width,height);
for (int i=0; i<mainMenu.length; i++) {
if (i==menuIdx) {
g.setColor(highBGColor);
g.fillRect(0,startHeight + (i*highFont.getHeight()) + spacing,width,highFont.getHeight());
g.setFont(highFont);
g.setColor(highColor);
g.drawString(mainMenu[i],(width - highFont.stringWidth(mainMenu[i]) ) / 2,startHeight + (i*highFont.getHeight()) + spacing,20);
} else {
g.setFont(lowFont);
g.setColor(lowColor);
g.drawString(mainMenu[i],(width - lowFont.stringWidth(mainMenu[i]) ) / 2,startHeight + (i*highFont.getHeight()) + spacing,20);
}
}
}
protected void keyPressed (int code) {
if (getGameAction(code) == Canvas.UP && menuIdx - 1 >= 0) {
menuIdx--;
} else if (getGameAction(code) == Canvas.DOWN && menuIdx + 1 < mainMenu.length) {
menuIdx++;
} else if (getGameAction(code) == Canvas.FIRE) {
switch(menuIdx) {
case NEW_GAME: System.out.println("开始新游戏"); break;
case HIGH_SCORE: System.out.println("显示得分"); break;
case SETTINGS: System.out.println("设置"); break;
case HELP: System.out.println("帮助"); break;
case ABOUT: System.out.println("关于"); break;
}
}
}
}
