A case of crash

[milkliker]

There is a possible of causing crash: A tableview of list, every cell has a subview of MRCircularProgressView to show the image download progress.

if I use [progressView setProgress:progress animated:YES]; to update the progress with animation, when the tableview scrolls with loading cells, it will crash with message

2013-11-24 14:00:08.296 test[63667:70b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSProxy methodSignatureForSelector:] called!'
*** First throw call stack:
(
    0   CoreFoundation                      0x01e445e4 __exceptionPreprocess + 180
    1   libobjc.A.dylib                     0x018988b6 objc_exception_throw + 44
    2   CoreFoundation                      0x01e443bb +[NSException raise:format:] + 139
    3   Foundation                          0x01575dee -[NSProxy methodSignatureForSelector:] + 59
    4   CoreFoundation                      0x01e345e9 ___forwarding___ + 217
    5   CoreFoundation                      0x01e344ee _CF_forwarding_prep_0 + 14
    6   QuartzCore                          0x021d9b8a _ZN2CA7Display15DisplayLinkItem8dispatchEv + 48
    7   QuartzCore                          0x021d9a46 _ZN2CA7Display11DisplayLink14dispatch_itemsEyyy + 310
    8   QuartzCore                          0x021d9f6b _ZN2CA7Display16TimerDisplayLink8callbackEP16__CFRunLoopTimerPv + 123
    9   CoreFoundation                      0x01e02bd6 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 22
    10  CoreFoundation                      0x01e025bd __CFRunLoopDoTimer + 1181
    11  CoreFoundation                      0x01dea628 __CFRunLoopRun + 1816
    12  CoreFoundation                      0x01de9ac3 CFRunLoopRunSpecific + 467
    13  CoreFoundation                      0x01de98db CFRunLoopRunInMode + 123
    14  GraphicsServices                    0x049c99e2 GSEventRunModal + 192
    15  GraphicsServices                    0x049c9809 GSEventRun + 104
    16  UIKit                               0x00606d3b UIApplicationMain + 1225
    17  test                                0x0004efbd main + 141
    18  libdyld.dylib                       0x0355f70d start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException

if disable the animation, it will be ok. [progressView setProgress:progress animated:NO]; works well.

[mrackwitz]

Thank you for your report! Could you please try if ef7a685e411298e9c38684f46538da0af6d4d0d2 helps?

[milkliker]

Hi Marius, Thank you for the fixing! I found another crash reason raised when I update these.

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSProxy doesNotRecognizeSelector:animateFrame:] called!'

And I found out the when the methodSignatureForSelector has called for animateFrame:, the _target is nil. Is this cause by the UITableViewCell has already released when scrolling?

[mrackwitz]

@milkliker Could you try to reproduce the crash in a minimal sample application and show me the code needed for the UITableViewController / UITableViewDataSource ?