Pepe Cano created CB-2851: ----------------------------- Summary: iOS UIKit Crash webView:didCreateOrUpdateScrollingLayer:withContentsLayer Key: CB-2851 URL: https://issues.apache.org/jira/browse/CB-2851 Project: Apache Cordova Issue Type: Bug Affects Versions: 2.5.0 Environment: Xcode 4.6 & 4.6.1 with cordova-ios (2.5) Reporter: Pepe Cano Priority: Minor
There are different crashes which appears sometimes on my application startup. - [__NSCFDictionary removeFromSuperlayer] - EXC_BAD_ACCESS The usual two root causes in my opinion are a memory management error (e.g. something has died and you've kept an invalid pointer to it because reference counting failed) or a not properly initialised thing of some kind that's being referenced before it's ready or erroneously, maybe due to a programming error. Looking at the main thread there I think it's probably something running in something like dispatch_async(dispatch_get_main_thread(),^{ ... and the thing being run is accessing a pointer that's not valid or (in some cases) points to an old, dead thing. The errors have disappeared when: - Removing (FileTransfer/CDVContacts plugin) - Disabling scrolling in the webView ((UIScrollView*)[self.webView scrollView]).scrollEnabled = NO; -------------> EXC_BAD_ACCESS com.apple.main-thread Crashed 0 libobjc.A.dylib objc_msgSend + 15 1 QuartzCore CALayerGetSuperlayer + 88 2 UIKit -[UIView(Hierarchy) superview] + 48 3 UIKit __UIViewWillBeRemovedFromSuperview + 94 4 UIKit -[UIView(Hierarchy) removeFromSuperview] + 56 5 UIKit -[UIScrollView setShowsVerticalScrollIndicator:] + 74 6 UIKit -[UIWebDocumentView webView:didCreateOrUpdateScrollingLayer:withContentsLayer:scrollSize:forNode:allowHorizontalScrollbar:allowVerticalScrollbar:] + 342 7 CoreFoundation __invoking___ + 68 8 CoreFoundation -[NSInvocation invoke] + 290 9 CoreFoundation -[NSInvocation invokeWithTarget:] + 50 10 WebKit -[_WebSafeForwarder forwardInvocation:] + 374 11 ... libdispatch.dylib _dispatch_call_block_and_release + 10 12 libdispatch.dylib _dispatch_client_callout + 22 13 libdispatch.dylib _dispatch_main_queue_callback_4CF + 228 14 CoreFoundation __CFRunLoopRun + 1288 15 CoreFoundation CFRunLoopRunSpecific + 356 16 CoreFoundation CFRunLoopRunInMode + 104 17 GraphicsServices GSEventRunModal + 74 ------------------------------- 0 libobjc.A.dylib objc_msgSend + 15 1 UIKit -[UIScrollView(Static) _adjustScrollerIndicators:alwaysShowingThem:] + 1938 2 UIKit -[UIScrollView _endPanWithEvent:] + 5526 3 UIKit -[UIScrollView _gestureRecognizerFailed:] + 334 4 UIKit -[UIGestureRecognizer _updateGestureWithEvent:] + 2344 5 UIKit ___UIGestureRecognizerUpdate_block_invoke_0543 + 46 6 UIKit _UIGestureRecognizerRemoveObjectsFromArrayAndApplyBlocks + 218 7 UIKit _UIGestureRecognizerUpdate + 1164 8 UIKit -[UIWindow _sendGesturesForEvent:] + 766 9 UIKit -[UIWindow sendEvent:] + 90 10 UIKit -[UIApplication sendEvent:] + 380 11 UIKit _UIApplicationHandleEvent + 6198 12 GraphicsServices _PurpleEventCallback + 590 13 GraphicsServices PurpleEventCallback + 34 14 ... CoreFoundation __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 34 20 UIKit UIApplicationMain + 1120 21 Yoin --------------------------------------------------- I have also reported to Apple but I did not still know which could be the root of the problem. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira