Event handling

[manojpaul]

Hi!

Can we add an event to List?

Like say: I want to display at the ticker the content of the list which is selected.
If I select List index[0], then the content of the List at zero will be shown at the ticker and so on for which ever index I select from the List.
When I press down the down arrow of my keyboard that particular index should be displayed only and not on Pressing the Ok button which goes for the commandAction (Command c, Displayable d) method. There must be some event handling for the problem which I am facing but not sure about it.

Using this code only display the text of the first selected item which is selected by default:

getTicker().setString(titleArray[0]);
mainList.setTicker(getTicker());

If someone can please throw some lights on this.

Thanks,

[vivartpandey]

yes you can do this.
public void listAction() {

String __selectedString = getList().getString(getList().getSelectedIndex());
if (__selectedString != null) {
if (__selectedString.equals("List Element 1")) {

ticker.setString("List Element 1");


} else if (__selectedString.equals("List Element 2")) {

ticker.setString("List Element 2");


} else if (__selectedString.equals("List Element 3")) {

ticker.setString("List Element 3");


}
}

}

[manojpaul]

Hi Vivart!

Thanks for the reply.
But my question is how/where should I call this method?
I couldn't find any event handling code on the net.
Can you please advice?

Thanks once again.

[raj_J2ME]

Hi,
If I am not wrong then you should call the on the keypressed,

[vivartpandey]

i think this code is self explanatory.

public void commandAction(Command command, Displayable displayable) {
       
        if (displayable == list) {
            if (command == List.SELECT_COMMAND) {
                
                listAction();
                
            } else if (command == exitCommand1) {
               
                exitMIDlet();
                
            } else if (command == okCommand) {
                
                switchDisplayable(null, getForm());
                
            }
        }
        
    }

[manjul_saini]

simply in commandAction where is your command select or whatever write

ticker.setString("bla bla.....");
tht all!

[manojpaul]

Hi!

Sorry but its not working at all.
As I press the up/down arrow key in my keyboard the commandAction(Command command, Displayable displayable) is not invoked at all. The method is called only if I press the Ok button or if I press the enter key in my keyboard. I may have missed something in the code, but not sure what.

If you can explain it would of great help.

[vivartpandey]

hi manjul_saini
i have already given code of listAction() function.
what you want more.how to create ticker,list, form or how to add ticker.
if you want this, first read a good book of j2me first.

[vivartpandey]

Like say: I want to display at the ticker the content of the list which is selected.

sorry i missunderstood i thought that selected means you are clicking on that list element,
but you want to say that just highlighted.
sorry this event is not available in javame you have to create a custom item.

[manojpaul]

Ok. Thanks.
Can you give me some useful links?

[vivartpandey]

you should read this article
Custom List item with marquee effect
i think this will help you.

[manjul_saini]

What does it means? i did not ask any question? or did i said some thing wrong? or some body gonna insane?

hi manjul_saini
i have already given code of listAction() function.
what you want more.how to create ticker,list, form or how to add ticker.
if you want this, first read a good book of j2me first.