midlet7.java

来自「这是郭克华老师的J2ME视频的源代码」· Java 代码 · 共 61 行

package prj3_1;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.List;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class MIDlet7 extends MIDlet implements CommandListener{

	private List lst = new List("请您选择相应操作",List.MULTIPLE);
	private Display dis;
	private Command cmdOK = new Command("确定",Command.SCREEN,1);
	
	protected void startApp() throws MIDletStateChangeException {
		dis = Display.getDisplay(this);
		dis.setCurrent(lst);

		lst.append("删除该号码", null);	
		lst.append("向该号码发送短信", null);
		lst.append("编辑该号码", null);
		lst.append("将该号码设置为好友", null);
		
		lst.addCommand(cmdOK);
		
		lst.setCommandListener(this);
	}	
	
	public void commandAction(Command c,Displayable d){
		/*方法1：遍历各个选项，判断每项有没有被选
		int size = lst.size();
		for(int i=0;i<size;i++){
			if(lst.isSelected(i)){
				System.out.println(lst.getString(i));
			}
		}*/
		/*方法2：getSelectedFlags然后判断哪些项被选*/
		int size = lst.size();
		boolean[] flags = new boolean[size];
		lst.getSelectedFlags(flags);
		for(int i=0;i<size;i++){
			if(flags[i]){
				System.out.println(lst.getString(i));
			}
		}

	}
	
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		// TODO Auto-generated method stub
		
	}
	protected void pauseApp() {
		// TODO Auto-generated method stub
	}
	
}