我在申请中遇到以下问题（请帮助我）：
*** Terminating app due to uncaught exception 'CALayerInvalidGeometry', reason: 'CALayer position contains NaN: [1.07157e-08 nan]'
*** Call stack at first throw:
(
0 CoreFoundation 0x3126a64f __exceptionPreprocess + 114
1 libobjc.A.dylib 0x32b12c5d objc_exception_throw + 24
2 CoreFoundation 0x3126a491 +[NSException raise:format:arguments:] + 68
3 CoreFoundation 0x3126a4cb +[NSException raise:format:] + 34
4 QuartzCore 0x32c6f61d _ZL18CALayerSetPositionP7CALayerRKN2CA4Vec2IdEEb + 140
5 QuartzCore 0x32c6f58b -[CALayer setPosition:] + 38
6 QuartzCore 0x32c6f4d7 -[CALayer setFrame:] + 390
7 UIKit 0x35a31455 -[UIView(Geometry) setFrame:] + 188
8 UIKit 0x35a51743 UIViewCommonInitWithFrame + 594
9 UIKit 0x35a514a1 -[UIView initWithFrame:] + 84
10 CaCaCard 0x0000683b -[CaCaCardsAppViewController shouldAutorotateToInterfaceOrientation:] + 510
11 UIKit 0x35a6eead -[UIViewController _isSupportedInterfaceOrientation:] + 48
12 UIKit 0x35a6ee6f -[UINavigationController _doesTopViewControllerSupportInterfaceOrientation:] + 46
13 UIKit 0x35a6ee37 -[UINavigationController shouldAutorotateToInterfaceOrientation:] + 14
14 UIKit 0x35a6edbf -[UINavigationController _isSupportedInterfaceOrientation:] + 54
15 UIKit 0x35a6fbbb -[UIViewController window:shouldAutorotateToInterfaceOrientation:] + 46
16 UIKit 0x35a6f857 -[UIWindow _shouldAutorotateToInterfaceOrientation:] + 194
17 UIKit 0x35a6f4a3 -[UIWindow setAutorotates:forceUpdateInterfaceOrientation:] + 366
18 UIKit 0x35a6f0ad -[UIWindow setDelegate:] + 168
19 UIKit 0x35a6efa9 -[UIViewController _tryBecomeRootViewControllerInWindow:] + 64
20 UIKit 0x35a6d611 -[UIViewController viewDidMoveToWindow:shouldAppearOrDisappear:] + 460
21 UIKit 0x35a6d3e5 -[UINavigationController viewDidMoveToWindow:shouldAppearOrDisappear:] + 36
22 UIKit 0x35a4c5a7 -[UIView(Internal) _didMoveFromWindow:toWindow:] + 506
23 UIKit 0x35a4c32f -[UIView(Hierarchy) _postMovedFromSuperview:] + 106
24 UIKit 0x35a31c1b -[UIView(Internal) _addSubview:positioned:relativeTo:] + 678
25 UIKit 0x35a3196b -[UIView(Hierarchy) addSubview:] + 22
26 CaCaCard 0x00004bcf -[CaCaCardsAppAppDelegate application:didFinishLaunchingWithOptions:] + 318
27 UIKit 0x35a61821 -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 772
28 UIKit 0x35a5bb65 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 272
29 UIKit 0x35a307d7 -[UIApplication handleEvent:withNewEvent:] + 1114
30 UIKit 0x35a30215 -[UIApplication sendEvent:] + 44
31 UIKit 0x35a2fc53 _UIApplicationHandleEvent + 5090
32 GraphicsServices 0x31d37e77 PurpleEventCallback + 666
33 CoreFoundation 0x31241a97 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 26
34 CoreFoundation 0x3124383f __CFRunLoopDoSource1 + 166
35 CoreFoundation 0x3124460d __CFRunLoopRun + 520
36 CoreFoundation 0x311d4ec3 CFRunLoopRunSpecific + 230
37 CoreFoundation 0x311d4dcb CFRunLoopRunInMode + 58
38 UIKit 0x35a5ad49 -[UIApplication _run] + 372
39 UIKit 0x35a58807 UIApplicationMain + 670
40 CaCaCard 0x000028e7 main + 70
41 CaCaCard 0x0000289c start + 40
)
terminate called after throwing an instance of 'NSException'
Program received signal: “SIGABRT”.
warning: Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.5 (8L1)/Symbols/Developer/usr/lib/libXcod
eDebuggerSupport.dylib (file not found).
(gdb)
-(void) viewWillAppear:(BOOL)animated
//-----------------------------------
{
if ( self.interfaceOrientation == UIInterfaceOrientationPortrait ||
self.interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown )
{
[NSThread sleepForTimeInterval:0.5];
[UIView beginAnimations:@"View Flip" context:nil];
[UIView setAnimationDuration:1.25];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[[UIApplication sharedApplication] setStatusBarOrientation:
UIInterfaceOrientationLandscapeRight];
UIScreen *screen = [UIScreen mainScreen];
CGFloat screenWidth = screen.bounds.size.width;
CGFloat screenHeight = screen.bounds.size.height;
UIView *navView = [[self navigationController] view];
navView.bounds = CGRectMake(0, 0, screenHeight, screenWidth);
navView.transform = CGAffineTransformIdentity;
navView.transform = CGAffineTransformMakeRotation(degreesToRadian(90));
navView.center = CGPointMake(screenWidth/2.0, screenHeight/2.0);
[UIView commitAnimations];
}
fontSelected = NO;
}
答案 0 :(得分：1)
问题是您在某个时刻设置的帧大小无效。可能是某个地方零值的矩形。
从您的代码中我怀疑当您要求屏幕尺寸时，您会收到一些意想不到的值。
也不要使用那些旧的动画功能。使用基于块的动画。它好多了。