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USComputerspezl
 

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    2. PORepeated calls to setRightBarButtonItems on UINavigationItem consume more and more time in each cycle
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    1. COThese are important general questions one has to figure out to develop the architecture of an app. You could write a whole book about such basic topics. Not to forget, that Apple leverages the SDK over time and answers from yesterday aren't always the answers for today's or tomorrow's issues. I develop own container view controllers in a situation, when I want to use the child view controllers not only in the container, but also as fully functional view controllers without a parent container view controller.
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    2. COMeanwhile I assume, that the origin of the problem is in the method of my container view controller that switches between the 3 child view controllers. Presumably there will be a kind of memory or stack side effect, that slows the performance afterwards. I've created an official incident ticket at Apple Technical Support, and they will look at it next week. In any case, I'll post the result here.
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      1. PORepeated calls to setRightBarButtonItems on UINavigationItem consume more and more time in each cycle
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    3. CO@The Senator, I did try that before, although it was clear to me that setting the array to nil before will not have any influence. I tested many approaches. At the moment, it seems to me that I've built an error, which shows up in this performance issue - but the error presumably is somewhere else. Why that? When I stay within one view - e.g. the camera view - and make autorotations, the performance stays constant as it should be.
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