[news.eclipse.technology.nebula] Re: select item in the gallery widget

[Vicente Rico Guillén <vicenterg@xxxxxxxxxx>]

Nicolas Richeton escribió:
> Vicente Rico Guillén a écrit :
>
> > It doesn't work. I get a nullpointerexception..
> > ------------------------------------------------------------------------------- 
> >
> > java.lang.NullPointerException
> >     at 
> > org.eclipse.nebula.widgets.gallery.AbstractGridGroupRenderer.getVisibleItems(AbstractGridGroupRenderer.java:280) 
> >
> >     at 
> > org.eclipse.nebula.widgets.gallery.NoGroupRenderer.draw(NoGroupRenderer.java:43) 
> >
> >     at 
> > org.eclipse.nebula.widgets.gallery.Gallery._drawGroup(Gallery.java:1339)
> >     at 
> > org.eclipse.nebula.widgets.gallery.Gallery.onPaint(Gallery.java:1183)
> >     at 
> > org.eclipse.nebula.widgets.gallery.Gallery$2.paintControl(Gallery.java:586) 
> >
> >     at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
> > -------------------------------------------------------------------------------- 
> Please open a bug for this NPE
> > I show you the main code related to this:
> >
> > ------------------------------------------------
> > public void selectItemNumber(int number) {                   if 
> > (GlobalSettings.moviesList.size() > 0) {
> >             moviesGallery.setFocus();
> >             moviesGallery.setSelection( new GalleryItem[]{ 
> > moviesGallery.getItem( 0 ) } );
>
> You get a NPE because you're trying to select a group, not an item
>
> Replace by
> moviesGallery.setSelection( new GalleryItem[]{  moviesGallery.getItem( 0 
> ).getItem(0) } );
>
> It should work.



I forget to say: I don't declare any group in the gallery. Maybe is 
there the problem, i don't know.