about.java

来自「JAVA手机的电子书编辑器以及阅读器」· Java 代码 · 共 62 行

/*
 * @(#)About.java	1.18 03/12/11
 *
 * Copyright (c) 2000-2003 Sun Microsystems, Inc. All rights reserved. 
 * PROPRIETARY/CONFIDENTIAL
 * Use is subject to license terms
 */

package com.zmc.ebook.reader;

import javax.microedition.lcdui.*;

/**
 * Typical about box with a string and an image.
 * In this case the Sun copyright and logo.
 */

public class About {

    /** Copyright notice */
    private static String copyright =
        "Copyright 2004 ZMC. All rights reserved.\n"
      + "电子书阅读器.\n";


    /** the previous screen to go back to */
    private Displayable previous;

    /**
     * Do not allow anyone to create this class
     */
    private About() {};

    /**
     * Put up the About box and when the user click ok return
     * to the previous screen.
     * @param display The <code>Display</code> to return to when the
     *                 about screen is dismissed.
     */
    public static void showAbout(Display display) {

	Alert alert = new Alert("About eBook Reader");
	alert.setTimeout(Alert.FOREVER);

	if (display.numColors() > 2) {
	    String icon = (display.isColor()) ?
		"/icons/JavaPowered-8.png" : "/icons/JavaPowered-2.png";

	    try {
	        Image image = Image.createImage(icon);
		alert.setImage(image);
	    } catch (java.io.IOException x) {
		// just don't append the image.
	    }
	}
	// Add the copyright
	alert.setString(copyright);
	display.setCurrent(alert);
    }

}