日期:2014-05-20 浏览次数:20950 次
/*
*
* Copyright (c) 2007, Sun Microsystems, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Sun Microsystems nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import javax.microedition.lcdui.*;
import javax.microedition.midlet.MIDlet;
/**
* The alert demo displays a list of alerts that will be displayed once the user
* clicks a list item. These alerts try to present the full range of alert types
* supported in MIDP.
*
* @version 2.0
*/
public class ChoiceGroupDemo extends MIDlet implements CommandListener,
ItemStateListener {
private static final Command CMD_EXIT = new Command("Exit", Command.EXIT, 1);
private Display display;
private boolean firsttime;
private Form mainForm;
public ChoiceGroupDemo() {
firsttime = true;
}
protected void startApp() {
if (firsttime) {
display = Display.getDisplay(this);
mainForm = new Form("Choice Group");
mainForm.setItemStateListener(this);
mainForm.append("These are the available choice group types");
// these are the images and strings for the choices.
Image[] imageArray = null;
try {
// load the duke image to place in the image array
Image duke = Image.createImage("/midp/uidemo/Icon.png");
// these are the images and strings for the choices.
imageArray = new Image[] { duke, duke, duke, duke };
} catch (java.io.IOException err) {
// ignore the image loading failure the application can recover.
}
String[] stringArray = { "Option A", "Option B", "Option C",
"Option D" };
// create the list of choice groups.
ChoiceGroup[] groups = { new ChoiceGroup("Exclusive",
ChoiceGroup.EXCLUSIVE, stringArray, imageArray),
// new ChoiceGroup("Exclusive", ChoiceGroup.EXCLUSIVE, stringArray,
// imageArray),
// new ChoiceGroup("Multiple", ChoiceGroup.MULTIPLE, stringArray,
// imageArray),
// new ChoiceGroup("Pop-Up", ChoiceGroup.POPUP, stringArray,
// imageArray)
};
for (int iter = 0; iter < groups.length; iter++) {
mainForm.append(groups[iter]);
}
mainForm.addCommand(CMD_EXIT);
mainForm.setCommandListener(this);
firsttime = false;
}
display.setCurrent(mainForm);
}
public void commandAction(Command c, Displayable d) {
if (c == CMD_EXIT) {
destroyApp(false);
notifyDestroyed();
}
}
protected void destroyApp(boolean unconditional) {
}
protected void pauseApp() {
}
public void itemStateChanged(Item item) {
ChoiceGroup cg = (ChoiceGroup) item;
System.out.println("selectedIndex is " + cg.getSelectedIndex());
}
}