Crash on ViewController Lifecycle when running an app with a 3rd party keyboard

[matan23]

Hi,

I have found an issue when using CoconutKit with a device having a 3rd party keyboard installed.

It crashes in UIViewController+HLSExtensions.m when keyboard is going to appear. Found the issue using master branch (commit: 0332e94bb255af6efbea155f556a2b4c459a6c3c)

Exception static void swizzle_viewDidLoad(UIViewController *self, SEL _cmd) { if (! [self isViewLoaded]) { @throw [NSException exceptionWithName:NSInternalInconsistencyException reason:@"The view controller's view has not been loaded" userInfo:nil]; }

Stacktrace *\ Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'The view controller's view has not been loaded'

Last Exception Backtrace: 0 CoreFoundation 0x00000001852242d8 exceptionPreprocess + 132 1 libobjc.A.dylib 0x0000000196ef80e4 objc_exception_throw + 56 2 Jobs 0x000000010029afe8 swizzled_UIViewController__viewDidLoad_Imp (UIViewController+HLSExtensions.m:244) 3 UIKit 0x0000000189c9cc18 -[UIViewController loadViewIfRequired] + 688 4 UIKit 0x0000000189c9c928 -[UIViewController view] + 28 5 UIKit 0x000000018a2c4164 -[_UIRemoteInputViewController viewDidInvalidateIntrinsicContentSize] + 20 6 libdispatch.dylib 0x0000000197575994 _dispatch_call_block_and_release + 20 7 libdispatch.dylib 0x0000000197575954 _dispatch_client_callout + 12 8 libdispatch.dylib 0x000000019757a20c _dispatch_main_queue_callback_4CF + 1604 9 CoreFoundation 0x00000001851db7f8 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 8 10 CoreFoundation 0x00000001851d98a0 __CFRunLoopRun + 1488 11 CoreFoundation 0x00000001851052d4 CFRunLoopRunSpecific + 392 12 GraphicsServices 0x000000018eb5b6fc GSEventRunModal + 164 13 UIKit 0x0000000189d02f40 UIApplicationMain + 1484

Thanks.

[defagos]

Thanks for your bug report. I will investigate this issue today.

Could you please tell me:

• Which iOS version you are running
• Which device you are using
• Which 3rd party keyboard you are using

Regards.

[defagos]

Just tested it with an iPad Air 2, iOS 8.4 and SwiftKey, I could not reproduce the crash. Could you also tell me when the crashes occurs, e.g.

• When the 3rd party keyboard appears?
• When it disappears?
• When the device rotates?
• When switching between built-in and 3rd party keyboard?
• In another situation?

It is especially strange that the crash occurs because of a missing view controller's view. I suspect the problem might be elsewhere.

Thanks for your help.

[defagos]

I have published a fix, now available in version 3.2. I was doing wrong throwing an exception from the swizzled method.

I still think there must be something wrong with what is happening in your project, though, as -viewDidLoad should be only called when a view actually exists.

Thank you very much for your feedback.

Regards.

[matan23]

@defagos thanks!