btgame.java

Java ME手机应用开发大全一书的配套光盘上的源码

package bluetoochgame;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class BTGame extends MIDlet implements CommandListener{
  private static BTGame instance;
  private MyCanvas mycanvas ;
   private ChoiceGroup  choices;
  private Form         initForm;


  /** 构造函数 */
  public BTGame() {

    instance = this;
  }
  public void startApp() {
    initForm = new Form("Connect 4");
   String[] peerNames = { "Server", "Client" };
   choices = new ChoiceGroup("Please select peer type:", Choice.EXCLUSIVE, peerNames, null);
   initForm.append(choices);
   Command exitCommand = new Command("Exit", Command.EXIT, 0);
   initForm.addCommand(exitCommand);
   Command playCommand = new Command("Play", Command.OK, 0);
   initForm.addCommand(playCommand);
   initForm.setCommandListener(this);
   Display.getDisplay(this).setCurrent(initForm);
  }

  public void pauseApp() {
  }

  public void destroyApp(boolean unconditional) {
  }

  public static void quitApp() {
    instance.destroyApp(true);
    instance.notifyDestroyed();
    instance = null;
  }

  public void commandAction(Command c, Displayable s) {
    if (c.getCommandType() == Command.EXIT) {
      destroyApp(true);
      notifyDestroyed();
    }
    else if (c.getCommandType() == Command.OK) {
      String name = choices.getString(choices.getSelectedIndex());
      if (mycanvas == null) {
        mycanvas = new MyCanvas(Display.getDisplay(this), name);
        Command exitCommand = new Command("Exit", Command.EXIT, 0);
        mycanvas.addCommand(exitCommand);
        mycanvas.setCommandListener(this);
        mycanvas.start();
      }
    }
  }


}