queryform.java

j2me实例代码

package socket;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.TextBox;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class QueryForm extends TextBox implements CommandListener {
	MIDlet midlet;
	public QueryForm(MIDlet m) {
		super("please enter your query","",6,TextField.ANY);
		midlet=m;
		addCommand(new Command("Leave",Command.SCREEN,1));
		addCommand(new Command("Query",Command.SCREEN,1));
		setCommandListener(this);
	}

	public void commandAction(Command c, Displayable d) {
		String cmd=c.getLabel();
		if(cmd.equals("Leave")){
			midlet.notifyDestroyed();
		}else if(cmd.equals("Query")){
			String query=getString();
			WorkThread wt=new WorkThread(query,Display.getDisplay(midlet));
			wt.start();
		}
	}

}