midlet1.java

这是郭克华老师的J2ME视频的源代码

package prj5_1;

import javax.microedition.lcdui.Choice;
import javax.microedition.lcdui.ChoiceGroup;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class MIDlet1 extends MIDlet {
	private Form mainForm = new Form("这是一个含有ChoiceGroup的Form");
	private Display dis;
	
	private ChoiceGroup cg1 = new ChoiceGroup("选择性别(单选)",Choice.EXCLUSIVE);
	private ChoiceGroup cg2 = new ChoiceGroup("选择性别(菜单)",Choice.POPUP);
	private ChoiceGroup cg3 = new ChoiceGroup("选择爱好(多选)",Choice.MULTIPLE);
	
	protected void startApp() throws MIDletStateChangeException {
		dis = Display.getDisplay(this);
		dis.setCurrent(mainForm);		
		
		mainForm.append(cg1);
		cg1.append("男", null);
		cg1.append("女", null);
		
		mainForm.append(cg2);
		cg2.append("男", null);
		cg2.append("女", null);
		
		mainForm.append(cg3);
		cg3.append("打球", null);
		cg3.append("唱歌", null);		
		dis.setCurrentItem(cg3);//成为默认选择，在此之前一定要加到Form上
	}
	
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		

	}

	protected void pauseApp() {
		

	}



}