updateuserdatascreen.java

j2me实例代码

package serverlet;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Item;
import javax.microedition.io.*;
import java.io.*;
import javax.microedition.lcdui.*;

public class UpdateUserDataScreen extends Form implements CommandListener {
	
	private static Displayable instance;
	synchronized public static Displayable getInstance(){
		if(instance==null)
			instance=new UpdateUserDataScreen();
		return instance;
	}
	private TextField id;
	private TextField pw;
	private TextField ds;
	
	private UpdateUserDataScreen(){
		super("增加用户");
		id=new TextField("id","",8,TextField.ANY);
		append(id);
		pw=new TextField("password","",8,TextField.PASSWORD);
		append(pw);
		ds=new TextField("desc","",20,TextField.ANY);
		append(ds);
		addCommand(new Command("back",Command.BACK,1));
		addCommand(new Command("update",Command.SCREEN,1));
		setCommandListener(this);
		
	}
	
	public void commandAction(Command c, Displayable d) {
		String cmd=c.getLabel();
		if(cmd.equals("update")){
			//String url=Navigator.midlet.getAppProperty("midletuserdataupdateurl");
			String url="http://localhost:8080/MIDPModule/midletuserdataupdate/";
			UpdateUserDataThread t=new UpdateUserDataThread(url,id.getString(),pw.getString(),ds.getString());
			t.start();
		}else{
			Navigator.flow(cmd);
		}

	}

}