ItemStateListenerDemo.java
资源名称:J2ME&Game.rar [点击查看]
上传用户:gyyuli
上传日期:2013-07-09
资源大小:3050k
文件大小:1k
源码类别:
J2ME
开发平台:
Java
- import javax.microedition.midlet.MIDlet;
- import javax.microedition.lcdui.*;
- public class ItemStateListenerDemo extends MIDlet implements CommandListener {
- private Command exitCommand = new Command("Exit", Command.EXIT, 1);
- private Form mainForm;
- private TextField mTextField;
- private StringItem mStringItem;
- public ItemStateListenerDemo() {
- mainForm = new Form("TextField演示");
- mTextField = new TextField("文本", "", 50, TextField.ANY);
- mStringItem = new StringItem("输入的内容为:","");
- mainForm.append(mTextField);
- mainForm.append(mStringItem);
- ItemStateListener listener = new ItemStateListener(){
- public void itemStateChanged(Item item){
- if(item == mTextField){
- int len = mTextField.size();
- char[] charArray = new char[len];
- mTextField.getChars(charArray);
- mStringItem.setText(new String(charArray));
- }
- }
- };
- mainForm.setItemStateListener(listener);
- mainForm.addCommand(exitCommand);
- mainForm.setCommandListener(this);
- }
- protected void startApp() {
- Display.getDisplay(this).setCurrent(mainForm);
- }
- public void commandAction(Command c, Displayable s) {
- if (c == exitCommand) {
- destroyApp(false);
- notifyDestroyed();
- }
- }
- protected void destroyApp(boolean unconditional) {
- }
- protected void pauseApp() {
- }
- }