ChoiceGroup多选模式

import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.ChoiceGroup;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Item;
import javax.microedition.lcdui.ItemStateListener;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class ChoiceGroupMIDlet extends MIDlet implements ItemStateListener { 
 private Display display;
 private Form form;

 //零或多选模式
 ChoiceGroup choice=new ChoiceGroup("薪酬",ChoiceGroup.MULTIPLE);
 //POPUP弹出菜单模式
 //ChoiceGroup choice=new ChoiceGroup("薪酬",ChoiceGroup.POPUP);
 //ChoiceGroup.IMPLICIT专业与list类的实例中
 public ChoiceGroupMIDlet () {

 display = Display.getDisplay(this); 
   form=new Form("");

 choice.append("600以下",null);
   choice.append("600~1000",null);
   choice.append("1000~3000",null);
   choice.append("3000~5000",null);
   choice.append("5000以上",null);
   form.append(choice);
   form.setItemStateListener(this);
   
 }
 protected void startApp() { 
   display.setCurrent(form) ;
 }
 protected void pauseApp() {
 }
 protected void destroyApp(boolean arg0) throws MIDletStateChangeException {  
 }
 public void itemStateChanged(Item item){
   String selStr="";
   System.out.println(choice.size());
   boolean[] strArray=new boolean[choice.size()];
   choice.getSelectedFlags(strArray);

  //测试状态数组中的数据
   for(int i=0;i<strArray.length;i++){
      System.out.println(strArray[i]);
   }

   //显示被选择的数据
   for(int i=0;i<strArray.length;i++){
       if (strArray[i]){
          selStr=selStr+choice.getString(i)+";";
    }
   }
   Alert alert=new Alert("提示",selStr+"被选中",null,null);
      display.setCurrent(alert);
 }
 }