queryform.java

来自「JAVA手机PDA程序设计入门书籍源代码」· Java 代码 · 共 29 行

import javax.microedition.io.*;
import java.io.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class QueryForm extends TextBox implements CommandListener
{
	MIDlet midlet ;
	public QueryForm(MIDlet m)
	{
		super("请输入查询文字","",6,TextField.ANY) ;
		midlet = m ;
		addCommand(new Command("离开",Command.SCREEN,1)) ;
		addCommand(new Command("查询",Command.SCREEN,1)) ;
		setCommandListener(this) ;
	}
	public void commandAction(Command c,Displayable s)
	{
		String cmd = c.getLabel() ;
		if(cmd.equals("离开"))
		{
			midlet.notifyDestroyed() ;
		}else if(cmd.equals("查询"))
		{
			String qs = getString() ; //要查询的字符串内容
			WorkThread wt = new WorkThread(qs,Display.getDisplay(midlet)) ;
			wt.start() ;
		}
	}
}