Ticker、TextBox、Command 、CommandListener的使用

 

package com.huqianhao.j2me.ch4;

import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.TextBox;
import javax.microedition.lcdui.TextField;
import javax.microedition.lcdui.Ticker;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class TextBoxDemo extends MIDlet implements CommandListener{

private TextBox box =new TextBox("请输入短信：","",255,TextField.ANY);
private Display dis ;
private Command okcCommand = new Command("确定",Command.ITEM,1);
public TextBoxDemo() {

}

protected void startApp() throws MIDletStateChangeException {
dis = Display.getDisplay(this);
dis.setCurrent(box);
Ticker ticker = new Ticker("你好啊");
box.setTicker(ticker);
box.addCommand(okcCommand);

box.setCommandListener(this);
}

public void commandAction(Command c, Displayable d) {
if (c==okcCommand) {
dis.setCurrent(new Alert("提示","你确定发送吗？",null,AlertType.CONFIRMATION), box);
}

}

protected void destroyApp(boolean arg0) throws MIDletStateChangeException {

}

protected void pauseApp() {
}

}