imageitemcenterdemo.java

来自「J2ME手机游戏开发技术详解随书光盘」· Java 代码 · 共 42 行

import javax.microedition.lcdui.*;
import javax.microedition.midlet.MIDlet;
public class ImageItemCENTERDemo 
extends MIDlet implements CommandListener  {
    private final static Command CMD_EXIT = new Command("Exit", Command.EXIT, 1);
    private Form mainForm;    
    private Display display;   
    private ImageItem mImageItem;                                               
    public ImageItemCENTERDemo() {
        display = Display.getDisplay(this);
               mainForm = new Form("ImageItem演示");
        try {
            // load the java splash screen image to place in the image array
            Image img = Image.createImage("/tree.png");
            mImageItem = new ImageItem("图片位于正中间",
                                img,
                                ImageItem.LAYOUT_CENTER|ImageItem.LAYOUT_NEWLINE_BEFORE|ImageItem.LAYOUT_NEWLINE_AFTER,
                                "图片无法显示");
            mainForm.append(mImageItem);
        }
        catch(java.io.IOException err) {
            mainForm.append("Failed in creating the image test!");
        }
       mainForm.addCommand(CMD_EXIT);
       mainForm.setCommandListener(this);
    }
    protected void startApp() {        
       display.setCurrent(mainForm);
    }
    protected void destroyApp(boolean unconditional) {
    }
    protected void pauseApp() {
    }
    public void commandAction(Command c, Displayable d) {
    if (c == CMD_EXIT) {
         destroyApp(false);
         notifyDestroyed();
      }
    }

}