canvassizemidlet.java

Java移动通信程序设计-J2MEMIDPJavaydccsj-J2MEMIDP

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

public class CanvasSizeMIDlet extends MIDlet
                              implements CommandListener{

  private Command exitCommand;
  Display display;

/*  CanvasSizeMIDlet(){
      display = Display.getDisplay(this);
      exitCommand = new Command("离开", Command.EXIT, 1);
  }*/

  public void startApp(){

      display = Display.getDisplay(this);
      exitCommand = new Command("离开", Command.EXIT, 1);
      Displayable SizeCanvas = new SizeCanvas();

      SizeCanvas.addCommand(exitCommand);
      SizeCanvas.setCommandListener(this);
      display.setCurrent(SizeCanvas);
  }

  public void pauseApp() { }
  public void destroyApp(boolean unconditional) { }

  public void commandAction(Command c, Displayable s) {
      if (c == exitCommand) {
        destroyApp(false);
        notifyDestroyed();
      }
  }

}