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[Nebula Gallery] Update existing items, name of group when empty field was clicked [message #989286]

Wed, 05 December 2012 14:38

Piotr Czajka

Messages: 4
Registered: November 2012

Junior Member

When I click on empty field between images I have nullPointerException but when I click there I would like to get name of this group, Can I do this ?

code:

gallery.addSelectionListener(new SelectionListener() {
			
	@Override
	public void widgetSelected(SelectionEvent arg0) 
	{
		GalleryItem item = (GalleryItem)arg0.item;		
								
		try
		{		
		actualPath = item.getParentItem().getText()+"/";
		actualPath += item.getText();
                //....
                //.... other operations
                catch(NullPointerException e)
		{
		System.out.println("Null selection");
                //..
                }
    }

and second question related with updating existing groups / items ..

I wrote code which removes one group when I load the same directory again and add new at first position but then index of group is changing and I have problem with identification .. so I think update group at the same position will be better
but It doesn't work for me Smile

 // code.... search the same name of group
 // if find secondly the same group in arrayList delete first group from gallery
 for(int j = 0; j < gallery.getItemCount(); j++)
 {				 
    if(actualFolderPath.equals(gallery.getItem(j).getText()))
     {
       gallery.remove(j);
     }
 }
  //....
//..

And it works .. but how can I update ? when I add gallery.refresh(j); It's doesn't work ...in Java doc I saw Gallery#updateStructuralValues(GalleryItem changedGroup, boolean keepLocation) but I don't see this method, Thanks

[Updated on: Wed, 05 December 2012 14:39]

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