displayable1.java~1~

来自「这是一个关于Java 2 Mobile Edition 的自定义组件的部分源码,」· JAVA~1~ 代码 · 共 39 行

package customitem;

import javax.microedition.lcdui.*;

public class Displayable1 extends Canvas implements CommandListener {
  /** Constructor */
  public Displayable1() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }

  /**Component initialization*/
  private void jbInit() throws Exception {
    // Set up this Displayable to listen to command events
    setCommandListener(this);
    // add the Exit command
    addCommand(new Command("Exit", Command.EXIT, 1));
  }

  /**Handle command events*/
  public void commandAction(Command command, Displayable displayable) {
    /** @todo Add command handling code */
    if (command.getCommandType() == Command.EXIT) {
// stop the MIDlet
      MIDlet1.quitApp();
    }
  }

  /** Required paint implementation */
  protected void paint(Graphics g) {
    /** @todo Add paint codes */
  }

}