ImageIO_malloc

[R40ul]

Hello !
I am currently trying to clean my app in order to optimize it, and so, I'm using Instruments intensively. I managed to block all of my leaks, and most of the allocations that I see in Instruments are under control.
Thus, I have a problem : something like 90% of my live bites are occupied by ImageIO_malloc.

Though, I've already replace all my "ImageNamed" with "imageWithContentsOfFile", but I still have like 60 images allocations.

I would like to know if it's possible to know what this images are, from their address for example, and most of all, I would like to optimize this in order to make my app runable on Iphone3 (for now, it crashes very often because of lack of memory).

I think that I may come from the way I've organized my app : I've got several views in my xib, and a main view which is empty and always visible. When I want to display a view, I push make this :

-(void)switchToMenuView{
	[currentView removeFromSuperview];
	[UIView beginAnimations:nil context:nil];
	[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self cache:YES];
	[UIView setAnimationDuration:0.35];
	currentView = menuView;
	[self addSubview:menuView];
	[UIView commitAnimations];
}

Is that correct ? Do it releases the ressources of "currentview" ?

Thanks by advance for your help !

[zardon]

Hi, could the number of image allocations be reduced if you used a sprite sheet to hold images of similar dimensions?

[R40ul]

Hi, and thanks for your answer,
I have effectively a lot of similar images to display.
If I understood what spritesheets are, it's a big image containing all of the images I'll need in my app, isn't it ?
Is there a way to convert my UIImageView in order to use this easily ?
Would I have to modify my xib, or could I keep my UIImageView as containers ?

And finally, I still have my "Views" problem : I think that all of the images of my app are always loaded. Is there a way to release an Image when its containing view is hidden ?

Thanks

[R40ul]

Well, I have tried to put some beakpoints in the dealloc functions of the views I add to my mainView, and none of it is reached.

The views I'm adding (here “menuView") are Outlets of my MainView class, and I define them in IB.
I'm adding and removing views like this :

-(void)switchToMenuView{
	[currentView removeFromSuperview];
	[UIView beginAnimations:nil context:nil];
	[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self cache:YES];
	[UIView setAnimationDuration:0.35];
	currentView = menuView;
	[self addSubview:menuView];
	[UIView commitAnimations];
}

Why is dealloc not called ?
Thanks for your answers