编辑：此问题与Assertion failure in -[UITableView layoutSublayersOfLayer:]不重复。
我有一个包含UITableView的UIViewController。 tableView在顶部包含一个UIView和一个图像。在iOS8上运行以下代码工作正常，但在iOS7I上得到错误：
*** Assertion failure in -[UITableView layoutSublayersOfLayer:], /SourceCache/UIKit_Sim/UIKit-2935.137/UIView.m:8794
2015-06-13 16:27:47.597 ParallaxTest2[81511:607] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Auto Layout still required after executing -layoutSubviews. UITableView's implementation of -layoutSubviews needs to call super.'
*** First throw call stack:
(
0 CoreFoundation 0x002b91e4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x01a6d8e5 objc_exception_throw + 44
2 CoreFoundation 0x002b9048 +[NSException raise:format:arguments:] + 136
3 Foundation 0x007214de -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 116
4 UIKit 0x00bc2a38 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 567
5 libobjc.A.dylib 0x01a7f82b -[NSObject performSelector:withObject:] + 70
6 QuartzCore 0x0497c45a -[CALayer layoutSublayers] + 148
7 QuartzCore 0x04970244 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
8 QuartzCore 0x0497c3a5 -[CALayer layoutIfNeeded] + 160
9 UIKit 0x00c84ae3 -[UIViewController window:setupWithInterfaceOrientation:] + 304
10 UIKit 0x00b9aaa7 -[UIWindow _setRotatableClient:toOrientation:updateStatusBar:duration:force:isRotating:] + 5212
11 UIKit 0x00b99646 -[UIWindow _setRotatableClient:toOrientation:updateStatusBar:duration:force:] + 82
12 UIKit 0x00b99518 -[UIWindow _setRotatableViewOrientation:updateStatusBar:duration:force:] + 117
13 UIKit 0x00b995a0 -[UIWindow _setRotatableViewOrientation:duration:force:] + 67
14 UIKit 0x00b9863a __57-[UIWindow _updateToInterfaceOrientation:duration:force:]_block_invoke + 120
15 UIKit 0x00b9859c -[UIWindow _updateToInterfaceOrientation:duration:force:] + 400
16 UIKit 0x00b992f3 -[UIWindow setAutorotates:forceUpdateInterfaceOrientation:] + 870
17 UIKit 0x00b9c8e6 -[UIWindow setDelegate:] + 449
18 UIKit 0x00c76b77 -[UIViewController _tryBecomeRootViewControllerInWindow:] + 180
19 UIKit 0x00b92474 -[UIWindow addRootViewControllerViewIfPossible] + 591
20 UIKit 0x00b925ef -[UIWindow _setHidden:forced:] + 312
21 UIKit 0x00b9286b -[UIWindow _orderFrontWithoutMakingKey] + 49
22 UIKit 0x0c345587 -[UIWindowAccessibility(SafeCategory) _orderFrontWithoutMakingKey] + 77
23 UIKit 0x00b9d3c8 -[UIWindow makeKeyAndVisible] + 65
24 UIKit 0x00b4dbc0 -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 2097
25 UIKit 0x00b52667 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 824
26 UIKit 0x00b66f92 -[UIApplication handleEvent:withNewEvent:] + 3517
27 UIKit 0x00b67555 -[UIApplication sendEvent:] + 85
28 UIKit 0x00b54250 _UIApplicationHandleEvent + 683
29 GraphicsServices 0x03bf2f02 _PurpleEventCallback + 776
30 GraphicsServices 0x03bf2a0d PurpleEventCallback + 46
31 CoreFoundation 0x00234ca5 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 53
32 CoreFoundation 0x002349db __CFRunLoopDoSource1 + 523
33 CoreFoundation 0x0025f68c __CFRunLoopRun + 2156
34 CoreFoundation 0x0025e9d3 CFRunLoopRunSpecific + 467
35 CoreFoundation 0x0025e7eb CFRunLoopRunInMode + 123
36 UIKit 0x00b51d9c -[UIApplication _run] + 840
37 UIKit 0x00b53f9b UIApplicationMain + 1225
38 ParallaxTest2 0x00111274 main + 180
39 libdyld.dylib 0x022f46d9 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
这是我的UIViewController的viewDidLoad（）方法：
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor.yellowColor()
self.navigationController?.navigationBar.mg_setBackgroundColor(UIColor.clearColor())
tableView = UITableView()
tableView.dataSource = self
tableView.delegate = self
self.tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: cellIndentifier)
self.view.addSubview(tableView)
tableView.snp_makeConstraints { (make) -> Void in
make.edges.equalTo(self.view)
}
topView = UIView()
topView.backgroundColor = UIColor.yellowColor()
topView.contentMode = UIViewContentMode.ScaleToFill
let tableHeaderDummyView = UIView(frame: CGRectMake(0, 0, 0, headerHeight))
tableHeaderDummyView.backgroundColor = UIColor.clearColor()
tableView.tableHeaderView = tableHeaderDummyView
tableHeaderDummyView.snp_makeConstraints { (make) -> Void in
make.top.equalTo(tableView.snp_top)
make.height.equalTo(headerHeight)
make.left.equalTo(self.view.snp_left)
make.right.equalTo(self.view.snp_right)
}
let img = UIImage(named: "bg")
topImageView = UIImageView(image: img)
topImageView.contentMode = UIViewContentMode.ScaleAspectFit
topView.addSubview(topImageView!)
topImageView.snp_makeConstraints { (make) -> Void in
make.edges.equalTo(topView)
}
topImageView?.contentMode = UIViewContentMode.ScaleToFill
tableView.addSubview(topView!)
tableView.sendSubviewToBack(topView!)
topView.snp_makeConstraints { (make) -> Void in
make.top.equalTo(tableView.snp_top).offset(-40)
make.left.equalTo(self.view.snp_left)
make.right.equalTo(self.view.snp_right)
make.height.equalTo(200)
}
}
如何阻止iOS7抛出此错误？