Noted - thanks - I will come back in 11 days (or when appropriate)
unless we feel cocoa for the iPhone is not for this list at that
time. If someone is able to point me in the direction of a legitimate
source of help that I'm allowed to go to feel free to point me in the
right direction.
Apologise for the transgression.
Richard
On Jul 1, 2008, at 12:02 AM, Michael Kaye wrote:
Richard,
Sorry but we can't discuss iPhone Development on this forum as the
iPhone SDK is still under NDA...
Regards, Michael.
On 30 Jun 2008, at 23:53, Richard Adams wrote:
Hi All,
I'm in the process of learning Cocoa/Objective-C and I'm writing
some stuff for the iPhone as an exercise.
I am writing a simple application based on the "Utility
Application" iPhone Template with the latest SDK Beta 8. This is a
simple 2 view application with a routine called "toggleview" that
sets up an animation between the 2 views to do a
"UIViewAnimationTransitionFlipFromRight" transition.
The issue arrises when one view has lots of UIButtons (>40) WITH
active background images set with code like .....
[self setBackgroundImage:[UIImage imageNamed:@"blank_37.png"]
forState:UIControlStateNormal];
Where "self" is a UIButton derived custom class.
As the number of buttons increases the animation processing slows
down to the point that there is no animation and it approaches 2
frames of animation - first frame and last frame (ie no perceived
animation).
I have proved it is the images in the buttons because performance
is great with just a background colour set (no images), I can also
see the animation render at very low frame rates if I significantly
increase the transition time, and performance increase the fewer
buttons with images there are.
So my question is - given I don't want to reduce the number of
buttons, and I want the images for eye candy reasons, is there
anything I can do to improve performance of the core animation
transition?
Tx
Richard
PS. This is running in the simulator on an Intel Macbook Pro with
2GB of memory and not iPhone natively (I couldn't get into the
developer early access)
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