Autolayout center x alignment在iPhone 6 Plus上產生無限的布局循環

Question

我們的應用程序僅掛在iPhone 6 Plus上。 該應用程序陷入無限的布局循環。 我們發現我們可以通過刪除使用“center x alignment”和“center y alignment”的自動布局約束來停止布局循環。

任何人都可以提供有關這種情況發生的原因嗎？

Thread 1, Queue : com.apple.main-thread
#0  0x3658bf4e in objc_msgSend ()
#1  0x29af3962 in __44-[NSISEngine fixupIntegralizationViolations]_block_invoke_2 ()
#2  0x29aebd88 in -[NSISLinearExpression enumerateVariablesAndCoefficients:] ()
#3  0x29aedbc8 in __44-[NSISEngine fixupIntegralizationViolations]_block_invoke ()
#4  0x29ae8de8 in -[NSISEngine withBehaviors:performModifications:] ()
#5  0x29aed8fc in -[NSISEngine fixupIntegralizationViolations] ()
#6  0x29aed310 in -[NSISEngine optimize] ()
#7  0x29af32e2 in -[NSISEngine constraintDidChangeSuchThatMarker:shouldBeReplacedByMarkerPlusDelta:] ()
#8  0x29af315c in -[NSISEngine tryToChangeConstraintSuchThatMarker:isReplacedByMarkerPlusDelta:undoHandler:] ()
#9  0x29ae83fa in -[NSLayoutConstraint _tryToChangeContainerGeometryWithUndoHandler:] ()
#10 0x29ae7f98 in -[NSLayoutConstraint _setSymbolicConstant:constant:] ()
#11 0x2c3ef516 in -[UIView(UIConstraintBasedLayout) _autoresizingConstraints_frameDidChange] ()
#12 0x2c2f8b3c in -[UIView(Geometry) setFrame:] ()
#13 0x2c31833c in -[UIScrollView setFrame:] ()
#14 0x2c8f03da in -[_UIQueuingScrollView setFrame:] ()
#15 0x2c8f0168 in -[_UIQueuingScrollView _setFrameAndApplyPageSpacing:] ()
#16 0x2c8755b4 in -[_UIPageViewControllerContentView layoutSubviews] ()
#17 0x2c2fbb36 in -[UIView(CALayerDelegate) layoutSublayersOfLayer:] ()
#18 0x2bd23ccc in -[CALayer layoutSublayers] ()
#19 0x2bd1f6b4 in CA::Layer::layout_if_needed(CA::Transaction*) ()
#20 0x2bd1f53c in CA::Layer::layout_and_display_if_needed(CA::Transaction*) ()
#21 0x2bd1ef20 in CA::Context::commit_transaction(CA::Transaction*) ()
#22 0x2bd1ed24 in CA::Transaction::commit() ()
#23 0x2c2f3fc4 in _afterCACommitHandler ()
#24 0x28e275cc in __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ ()
#25 0x28e24c8a in __CFRunLoopDoObservers ()
#26 0x28e25092 in __CFRunLoopRun ()
#27 0x28d73620 in CFRunLoopRunSpecific ()
#28 0x28d73432 in CFRunLoopRunInMode ()
#29 0x300db0a8 in GSEventRunModal ()
#30 0x2c35d808 in UIApplicationMain ()

Answer 1

我們正在使用XCode 5編譯我們的應用程序，遷移到XCode 6似乎已經解決了這個問題。