ios - UIAlertView 和 UIActionSheet buttonClicked - EXC_BAD_ACCESS

Question

我收到了两份关于 Crashlytics 的崩溃报告，日志相似，一份针对 UIAlertView，一份针对 UIActionSheet:

Exception Type: EXC_BAD_ACCESS Code: KERN_INVALID_ADDRESS at 0xa0000008

0    libobjc.A.dylib     objc_msgSend + 15
1    UIKit   -[UIAlertView(Private) _buttonClicked:] + 296
2    UIKit   -[UIApplication sendAction:to:from:forEvent:] + 72
3    UIKit   -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 30
4    UIKit   -[UIControl sendAction:to:forEvent:] + 44
5    UIKit   -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 502
6    UIKit   -[UIControl touchesEnded:withEvent:] + 488
7    UIKit   -[UIWindow _sendTouchesForEvent:] + 524
8    UIKit   -[UIApplication sendEvent:] + 380
9    UIKit   _UIApplicationHandleEvent + 6154
10   GraphicsServices    _PurpleEventCallback + 590
11   GraphicsServices    PurpleEventCallback + 34
12 ...   CoreFoundation  __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 34

我正在使用 ARC，在我的代码中，我在 View Controller 中分配/初始化警报 View 和操作表，将委托(delegate)设置为 self。我找不到问题的根源，有什么建议吗？

这是 SomeViewController.m 中的示例:

UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:NSLocalizedString(@"Are you sure?", nil) delegate:self cancelButtonTitle:NSLocalizedString(@"Continue",nil) destructiveButtonTitle:NSLocalizedString(@"Yes", nil) otherButtonTitles:nil];
            actionSheet.delegate = self;
            [actionSheet showInView:self.view];

结束我实现的 (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex

Answer 1

查找此类错误的最佳方法使用NSZombieEnabled 环境变量。EXC_BAD_ACCESS 的原因是试图访问已释放的对象。 Review this