Neale Genereux created CB-1195:
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Summary: Applications will crash on EXC_BAD_ACCESS if user taps
top status bar while contents of a -webkit-overflow-scrolling: touch element
are modified
Key: CB-1195
URL: https://issues.apache.org/jira/browse/CB-1195
Project: Apache Cordova
Issue Type: Bug
Components: iOS
Affects Versions: 1.6.1
Environment: iPod Touch iOS 5.1 Hardware, iPhone 4 iOS 5.0.1 Hardware.
No luck reproducing with simulator
Reporter: Neale Genereux
Assignee: Shazron Abdullah
Priority: Critical
Hello devs,
I have found an issue where a Cordova application will crash if the user taps
the clock or battery portion of the status bar while the contents of an HTML
element with -webkit-overflow-scrolling: touch are removed and rebuilt. I will
attach a sample project (built with Cordova 1.6.1) which makes it easy to repro
the issue. Here are the repro steps:
- Build and launch the attached project on a device
- Click the "Regenerate" link
- Immediately start rapidly clicking on the clock in the top status bar
- Repeat until crash
In my tests the crash consistently happens on the first or second try. Note
that the JavaScript in the sample project is intentionally inefficient, in an
attempt to simulate a much more complicated DOM being created and destroyed.
Enabling Zombies yields the following error:
2012-08-04 15:59:32.837 cordovacrash[24214:707] *** -[UIWebOverflowScrollView
_viewDelegate]: message sent to deallocated instance 0x605ef80
Googling for that error revealed two threads on StackOverflow with similar
issues, but this seems to be the first concrete method reproducing the issue. I
created another test project which took the same javascript and placed it in a
UIWebKitView without Cordova, and I could not get the application to crash.
this leads me to believe that something in the Cordova framework is to blame.
While my test is on an older Cordova version (1.6.1), the threads on
StackOverflow mentioned builds as new as 1.9.0
See:
http://stackoverflow.com/questions/11382476/phonegap-ios-exception-uiweboverflowscrollview-viewdelegate-message-sent-t
http://stackoverflow.com/questions/10378946/uiweboverflowscrollview-exception-in-phonegap-application
Thanks!
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