Using multiple viewControllers, memory advise

[hehe0613]

Dear All
I'm creating an iPad application, based on a split view controller.
My detail (or right) view controller features a scroll view where I need to add multiple view controllers.
Each view controller (instantiated on the scroll view) requires a large amount of memory, it contains a picture, some buttons and so on.

My question is : How to handle memory management for such a situation ?

Basically I created an array of view controllers, so I keep a reference on each instantiated viewcontroller, and each time a button on any viewcontroller is pressed, I'm able to perform the corresponding action.

Unfortunatelly I have some memory issues due to the large number of instanciated viewcontrollers.

Releasing these view controllers once their view is added to the scrollview does not work since I loose the viewcontroller reference, thus pressing a button of the released viewcontroller result in a call to a deallocated viewcontroller.

So what would be the best practice for instantiating multiple view controllers in a scrollview ?

Is there a way to save (to file ?) a reference of the viewcontroller ? so I can free up memory and reallocated once required ?

Any help would be greatly appreciated !
Thanks
J

[TUX2K]

Well I've run into a similar problem, only I had to add many images to one scrollview.

The tick I use, is to only load to viewcontroller that is currently visible, and the 2 just next to it.
When the users scrolls i load the next view controller and add it, removing the viewcontroller that is no longer next to the visible viewcontroller.

This lazy loading princable work really well.

[hehe0613]

Thanks for the tip !
I was also wondering if it is possible to

- remove the scrollview and
- use a tableview with customs cells, each cell would be one viewcontroller.

?

Originally Posted by TUX2K

Well I've run into a similar problem, only I had to add many images to one scrollview.

The tick I use, is to only load to viewcontroller that is currently visible, and the 2 just next to it.
When the users scrolls i load the next view controller and add it, removing the viewcontroller that is no longer next to the visible viewcontroller.

This lazy loading princable work really well.