midlet4.java

这是郭克华老师的J2ME视频的源代码

package prj5_1;

import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.ImageItem;
import javax.microedition.lcdui.Item;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class MIDlet4 extends MIDlet {
	private Form mainForm = new Form("这是一个含有ImageItem的Form");
	private Display dis;
	private ImageItem imageItem;
	public MIDlet4(){
		Image img = null;
		try{
			img = Image.createImage("/img.png");
		}catch(Exception ex){
			ex.printStackTrace();
		}
		imageItem = 
			new ImageItem("图片",img,ImageItem.LAYOUT_CENTER|Item.LAYOUT_EXPAND,"该图像无法装载");
	}
	
	protected void startApp() throws MIDletStateChangeException {
		dis = Display.getDisplay(this);
		dis.setCurrent(mainForm);		
		
		mainForm.append(imageItem);
		
	}
	
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		

	}

	protected void pauseApp() {
		

	}



}