How do I programatically set the selected item in a list or combobox

[steve...@more4apps.com]

I want to programatically set the selected item in a list (a combobox actually but I think they essentially behave the same). I know the displayed value I need to find, how do I use this to search for the entry in the listmodel? I see the method setSelectedIndex does what I need but how do I determine what the index number is? I only have the text that is being displayed in the list.

Thanks,

Steve

[Shai Almog]

There is also a setSelectedItem in List assuming you are using List and not the list model.

[steve...@more4apps.com]

Hi Shai,

setSelectedItem takes "Object" as a parameter type, what would that object be? The comboBox is populated with a ListModel, how would I use setSelectedItem in this case?

Thanks,

Steve

[Gareth Murfin]

You have to find out its index and use setSelectedIndex() http://codenameone.googlecode.com/svn/trunk/CodenameOne/javadoc/com/codename1/ui/ComboBox.html

[steve...@more4apps.com]

Hi Gareth,

Do you have a code example for this, I am completely lost as to how I would "find out its index".

Thanks,

Steve

[Gareth Murfin]

Here is how I have done it in the past, it isnt lightning quick as it relies on string comparisons, but then it really doesnt matter if youre just setting a few items 

 cb = ((com.sun.lwuit.ComboBox  ) findByNameX("insurance_companycb", frm ));

            int index = getIndexOfThisString(cb,RegistrationInfoContainer.insurance_company,"updatingProfile a");

            setSelectedIndexOfComboBox(cb,index);

    //pass in a string and a comboxbox and get back the index of that string within the combobox

    private int getIndexOfThisString(ComboBox cb, String myString,String whoCalled)

    {

        _("getIndexOfThisString called by "+whoCalled);

        ListModel lm = cb.getModel();

        for (int i=0; i<lm.getSize(); i++)

        {

            String s = lm.getItemAt(i).toString();

            if (s.equals(myString))

            {

                return i;

            }

        }

        showError("getIndexOfThisString (for cb "+cb.getName()+") has failed to find the index of "+myString);

        return -1;

    }

  private void setSelectedIndexOfComboBox(ComboBox cb, int index)

    {

        _("setSelectedIndexOfComboBox "+cb.getName());

        if (index>=0)

        {

            cb.setSelectedIndex(index);

        }

        else

        {

            _("WARNING.................... setSelectedIndexOfComboBox got -1 so cant set index!!!");

        }

    }

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Gareth Murfin
(Android Freelancer - www.garethmurfin.co.uk)

[Shai Almog]

The object would be the value you have, you said you have the string value of the entry you want to select right?