info_client.java

《Java程序设计实践教程》代码

/***************************************************
*  程序文件名称：　Info_client.java
*  功能：手机程序通用的基本框架
***************************************************/
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*; 
 
public class Info_client extends MIDlet {
  static Info_client instance;
  Display display;
  mainDisplayable displayable;
  newDisplayable newDisplay;
  preDisplayable preDisplay;
  String s;
  public Info_client() {
    instance = this;
    //取得表演舞台；
    display = Display.getDisplay(this);
    displayable = new mainDisplayable();
    preDisplay = new preDisplayable();
    s="";
  }

  public void startApp() {
    //把对象放入舞台
    display.setCurrent(displayable);
  }

  public void pauseApp() {
  }

  public void destroyApp(boolean unconditional) {
  }
   //退出应用程序
  public static void quitApp() {
    instance.destroyApp(true);
    instance.notifyDestroyed();
    instance = null;
  }

}