textfielddemo.java

Java ME手机应用开发大全一书的配套光盘上的源码

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class TextFieldDemo extends MIDlet implements CommandListener
                              
{
  private Display display;
  private Form form; 
  private Command submit; 
  private Command exit; 
  private TextField name,address,email,telphone; 
  private StringItem str;
  public TextFieldDemo()
  {
   display = Display.getDisplay(this);
   submit = new Command("提交", Command.SCREEN, 1);
   exit = new Command("退出", Command.EXIT, 1);
   name = new TextField("姓名", "", 30, TextField.ANY);
   address= new TextField("地址", "", 30, TextField.ANY);
   email= new TextField("邮箱", "", 30, TextField.EMAILADDR);
   telphone=new TextField("电话", "", 30, TextField.PHONENUMBER);
   form = new Form("联系人信息管理");    
   form.addCommand(exit);
   form.addCommand(submit);    
   form.append(name);
   form.append(address);
   form.append(email);
   form.append(telphone);
   form.setCommandListener(this);   
  }
  public void startApp()
  {
   display.setCurrent(form);
  }
  public void pauseApp()
  { 
  }
  public void destroyApp(boolean unconditional)
  { 
  }
  public void commandAction(Command command, Displayable displayable)
  {
   if (command == submit)
   {
     
	 str=new StringItem("","信息已经正确保存");
     for(int i=0;i<4;i++)
	 form.delete(0);
     form.removeCommand(submit);
	 form.append(str);
   }
   else if (command == exit)
   {
      destroyApp(false);
      notifyDestroyed();
   }
  }
}