Question

我最近将QuincyKit（位于PLCrashReporter之上的崩溃日志记者）添加到应用程序中，我收到了一个崩溃日志，我在解释时遇到了问题。

崩溃日志似乎不一致 - 它说线程0崩溃了，但是“Last Exception Backtrace”与线程0 callstack不匹配。最后一个异常指向一个表方法，但是线程0 callstack表示在Quincy管理器初始化期间发生了中止。

此外，“Last Exception Backtrace”似乎没有多大意义 - “canEditRowAtIndexPath”方法甚至根本不包含对“removeObjectAtIndex”的调用（参见下面的方法）。

任何人都可以了解我是否应该关注“Last Exception Backtrace”或者是一只红鲱鱼，我应该真正研究为什么PLCrashReporter在启动时会中止？

非常感谢

崩溃日志摘录：

Exception Type:  SIGABRT
Exception Codes: #0 at 0x38362df0
Crashed Thread:  0

Application Specific Information:
*** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayM objectAtIndex:]: index 7 beyond bounds [0 .. 6]'

Last Exception Backtrace:
0   CoreFoundation                       0x29920fef <redacted> + 126
1   libobjc.A.dylib                      0x37d0cc8b objc_exception_throw + 38
2   CoreFoundation                       0x29833821 -[__NSArrayM removeObjectAtIndex:] + 0
3   DART                                 0x000906b3 -[DeliveryComplete tableView:canEditRowAtIndexPath:] + 262
4   UIKit                                0x2d0a3c25 -[UITableView _canEditRowAtIndexPath:] + 60
5   UIKit                                0x2d0a3a7f -[UITableView _setupCell:forEditing:atIndexPath:animated:updateSeparators:] + 130
6   UIKit                                0x2d0a1179 <redacted> + 2320
7   UIKit                                0x2cf82a31 +[UIView performWithoutAnimation:] + 72
8   UIKit                                0x2d0a0861 -[UITableView _configureCellForDisplay:forIndexPath:] + 336
9   UIKit                                0x2d246383 -[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 498
10  UIKit                                0x2d24642f -[UITableView _createPreparedCellForGlobalRow:willDisplay:] + 54
11  UIKit                                0x2d23b013 -[UITableView _updateVisibleCellsNow:isRecursive:] + 2258
12  UIKit                                0x2d049657 -[UITableView layoutSubviews] + 186
13  UIKit                                0x2cf73023 -[UIView layoutSublayersOfLayer:] + 546
14  QuartzCore                           0x2c993d99 -[CALayer layoutSublayers] + 128
15  QuartzCore                           0x2c98f5cd <redacted> + 360
16  QuartzCore                           0x2c98f455 <redacted> + 16
17  QuartzCore                           0x2c98edf1 <redacted> + 224
18  QuartzCore                           0x2c98ebdf <redacted> + 434
19  UIKit                                0x2cf6b23b <redacted> + 126
20  CoreFoundation                       0x298e6fed <redacted> + 20
21  CoreFoundation                       0x298e46ab <redacted> + 278
22  CoreFoundation                       0x298e4ab3 <redacted> + 914
23  CoreFoundation                       0x29831201 CFRunLoopRunSpecific + 476
24  CoreFoundation                       0x29831013 CFRunLoopRunInMode + 106
25  GraphicsServices                     0x3100d201 GSEventRunModal + 136
26  UIKit                                0x2cfd5a59 UIApplicationMain + 1440
27  DART                                 0x00015491 _mh_execute_header + 25745
28  libdyld.dylib                        0x38298aaf <redacted> + 2

Thread 0 Crashed:
0   libsystem_kernel.dylib               0x38362df0 __pthread_kill + 8
1   libsystem_c.dylib                    0x382fe909 abort + 76
2   DART                                 0x00122dd7 -[PLCrashReporter enableCrashReporterAndReturnError:] + 1294
3   CoreFoundation                       0x2992131f <redacted> + 630
4   libobjc.A.dylib                      0x37d0cf13 <redacted> + 174
5   libc++abi.dylib                      0x37643de3 <redacted> + 78
6   libc++abi.dylib                      0x376438af __cxa_rethrow + 102
7   libobjc.A.dylib                      0x37d0cdd3 objc_exception_rethrow + 42
8   CoreFoundation                       0x2983129d CFRunLoopRunSpecific + 632
9   CoreFoundation                       0x29831013 CFRunLoopRunInMode + 106
10  GraphicsServices                     0x3100d201 GSEventRunModal + 136
11  UIKit                                0x2cfd5a59 UIApplicationMain + 1440
12  DART                                 0x00015491 _mh_execute_header + 25745
13  libdyld.dylib                        0x38298aaf <redacted> + 2

“canEditRowAtIndexPath”方法：

-(BOOL) tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (tableView.tag == SIGNER_TABLE_TAG_VALUE)
    {

        RouteStopData *currentStop = [CurrentRoute singleton].selectedStop;
        NSArray *signers = [currentStop signerNamesForStop];

        if (indexPath.row >= [signers count])
        {
            return NO;
        }

        if ([[signers objectAtIndex:indexPath.row] isEqualToString:DARK_DROP_SIGNER_STRING] ||
            [[signers objectAtIndex:indexPath.row] isEqualToString:PAPER_INVOICE_SIGNER_STRING] ||
            [[signers objectAtIndex:indexPath.row] isEqualToString:ADD_NEW_SIGNER_STRING]
            )
        {
            return NO;
        }

        return YES;
    }

    return NO;
}

Answer 1

如果您使用的是ios7，那可能是UIKit的错 Tableview希望在dealloc之前调用delegate方法因此，您可以在Custom类中添加此代码：

- (void )dealloc{
    self.tableView.dataSource = nil;
   self.tableView.delegate  = nil;
}

在iOS 7 bug or my bug in UIAlertView

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需要帮助解释QuincyKit的崩溃日志

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