ui_low6.java

J2ME 无线通信技术应用开发源代码

// 程序名UI_Low6.java
// 测试图象的绘制——Image对象
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class UI_Low6 extends MIDlet implements CommandListener{
  private Display  display;
  private MyCanvas canvas;
  private Command cmdExit;
  public UI_Low6(){
    display = Display.getDisplay( this );
    canvas  = new MyCanvas( this );
    cmdExit = new Command("Exit",Command.SCREEN,1);
    canvas.addCommand(cmdExit);
    canvas.setCommandListener(this);
  }

  protected void startApp(){
    display.setCurrent( canvas );
  }
   
  public void commandAction( Command c, Displayable d ){
    if (c == cmdExit){
      exit();
    }
  }

  public void exit(){
    destroyApp( true );
    notifyDestroyed();
  }

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