我的J2ME编程联系(1)——List

王朝java/jsp·作者佚名  2006-01-09
窄屏简体版  字體: |||超大  

import javax.microedition.lcdui.*;

import javax.microedition.midlet.*;

public class listtest extends MIDlet implements CommandListener{

private List alist;

private Command exitcommand;

private Command okcommand;

private Display adisplay;

private Alert analert;

public listtest(){

analert=new Alert("Selected","You have Choose a Fruit",null,AlertType.INFO);

alist=new List("fruit",Choice.MULTIPLE);

exitcommand=new Command("Exit",Command.EXIT,1);

okcommand=new Command("OK",Command.OK,1);

alist.append("Apple",null);

alist.append("Orange",null);

alist.append("banana",null);

alist.addCommand(exitcommand);

alist.addCommand(okcommand);

alist.setCommandListener(this);

}

public void startApp(){

adisplay=Display.getDisplay(this);

adisplay.setCurrent(alist);

}

public void pauseApp(){

}

public void destroyApp(boolean unconditional){

}

public void commandAction(Command c,Displayable d){

// use the i get the Selected list element

//int i =alist.getSelectedIndex();

if(c==exitcommand){

destroyApp(false);

notifyDestroyed();

}

else {

//display different information when diffenent element

//have been selected

/*if(i==0){

analert.setString("You have Choosed Apple!");

adisplay.setCurrent(analert,alist);

}

if(i==1){

analert.setString("You have Choosed Orange!");

adisplay.setCurrent(analert,alist);

}

if(i==2){

analert.setString("You have Choosed Banana!");

adisplay.setCurrent(analert,alist);

}*/

String s=" ";

for(int i=0;i<alist.size();i++){

boolean selected=alist.isSelected(i);

if(selected&&i==0){

s+="Apple ";

}

if(selected&&i==1){

s+="Orange ";

}

if(selected&&i==2){

s+="Banana ";

}

}

analert.setString("You have Selected"+s);

analert.setTimeout(Alert.FOREVER);

adisplay.setCurrent(analert,alist);

}

}

}

 
 
 
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