[maemo-developers] [maemo-developers] Switching between appviews ...

[From: Jorge Souza]

Hi Kalle,

> > <quoted>
> > 
> > gtk_container_remove(GTK_CONTAINER(appview),
> >          GTK_WIDGET(label_test1));
> > gtk_container_add(GTK_CONTAINER(appview),
> >               GTK_WIDGET(label_test2));
> > gtk_widget_show(GTK_WIDGET(label_test2));
> > 
> > hildon_app_notify_view_changed(appview,
> label_test2);
> > 
> > </quoted>
> 
> The switching needs no widget juggling, the only
> thing that is
> actually reparented is  the appviews, but that's an
> implementation
> detail.

Ok. I tried this approach because I've saw apps using
it as well. Again, in my case I am able to change the
widgets between my appview, but the added ones do not
appear after remove the first ones. 

ps: Using the 'g_list_foreach' function , I'm able to 
retrieve the widgets in the appview (in this case,
just the labels) and then its content. The switching
the performed properly, but the added widgets are not
showed :( !!

> The proper way to do this is to:
> 
> 1) create an HildonApp
> 
> 2) create two or more HildonAppViews
> 
> 3) register other AppViews with the app:
>   hildon_app_register_view (HILDON_APP (app),
> appview2);
>  
> 4) set the initially visible/active appview:
>   hildon_app_set_appview (HILDON_APP (app),
> appview);
> 
> and you are done. Nothing else is needed (well,
> populating and showing
> the views and the app is a good idea of course). The
> point 3/4
> ordering is important it seems (this is a bug I
> think). Also note that
> the appview set with set_appview() should not be
> registered as this
> happens automatically (at least if you haven't set
> autoregistration to
> FALSE, it defaults to TRUE).

I got it. Thanks. But what I had in mind was using
just one appview aiming to save so memory as I can (in
fact, I don't know if it is a significant save :S -
probably NO, since the users won't to open many
"windows" of the same app in a embedded device. Am I
right ?!)

> The "switched_{to,from}" signals are just to notify
> your application
> that the switch is made, in case you want to do
> something special in
> your app when that happens.

Thanks very much 

regards

Jorge Souza


	
	
		
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