我有一个注册方法，可以通过API来注册用户并返回帐户信息。一切正常，但在我的注册视图控制器中，当注册成功时，我弹出注册视图。一旦我弹出注册视图，我就会在下面的行中获得EXC_BAD_ACCESS。注意 - 这只发生在手机上。在模拟器中，这不会发生。这似乎是一个时间问题，但我无法弄明白。例如，如果我在[_completionHandlerSignUp release]上放置一个breakpointer;然后它每次都有效。
这是我的DataAccessor类中的createAccount方法：
_completionHandlerSignUp = [handler copy];
the normal request code would be here
[request setCompletionBlock:^
{
int statusCode = request.responseStatusCode;
NSDictionary *json = [request.responseString JSONValue];
NSString *status = [json valueForKeyPath:@"status"];
NSLog(@"API JSON %@", request.responseString);
myAccount.statusCode = statusCode;
if(statusCode == 200)
{
myAccount.status = status;
myAccount.error = @"";
myAccount.firstName = firstName;
myAccount.lastName = lastName;
Credentials *myCredentials = [[Credentials alloc] init];
myCredentials.emailAddress = userName;
myCredentials.passWord = passWord;
myAccount.credentials = myCredentials;
[myCredentials release];
}
else if(statusCode == 403)
{
NSString *error = [json valueForKeyPath:@"error"];
myAccount.status = status;
myAccount.error = error;
NSLog(@"API Error %@",error);
}
NSLog(@"TEST - Sending Account Response ");
_completionHandlerSignUp(myAccount);
NSLog(@"TEST - DEALLOCATING OBJECTS ");
[_completionHandlerSignUp release]; <--**EXC_BAD_ACCESS HAPPENS HERE**
_completionHandlerSignUp = nil;
}];
以下是viewcontroller方法：
DataAccessor *dataAccessor = [[DataAccessor alloc] init];
[dataAccessor createAccount:[Utilities getDeviceUDID] user:txtEmail.text password:txtPassword.text firstname:txtFirstName.text lastname:txtLastName.text completion:^(Account *myAccount)
{
[dataAccessor release];
if(myAccount != NULL)
{
NSLog(@"Status: %@", myAccount.status);
NSLog(@"Error: %@", myAccount.error);
if(myAccount.statusCode == 200) //handle successful transaction
{
[Preferences signInUser:myAccount.credentials.emailAddress password:myAccount.credentials.passWord];
[self popViewController]; **<<<<If I remove this, THERE IS NO CRASH******
}
else if(myAccount.statusCode == 403)
{
//todo - handle error
}
}
[self finalUpdate];
}];
- (void) popViewController
{
NSLog(@"TEST - Popping View Controller ");
CATransition* transition = [CATransition animation];
transition.duration = 0.5;
transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
transition.type = kCATransitionPush; //kCATransitionMoveIn; //, kCATransitionPush, kCATransitionReveal, kCATransitionFade
transition.subtype = kCATransitionFromBottom; //kCATransitionFromLeft, kCATransitionFromRight, kCATransitionFromTop, kCATransitionFromBottom
// MainSelectionMenu *myViewController = [[MainSelectionMenu alloc] initWithNibName:@"MainSelectionMenu" bundle:nil];
[self.navigationController.view.layer addAnimation:transition forKey:nil];
[[self navigationController] popViewControllerAnimated:NO];
}
其他一些非常奇怪的事情是我的SIGN IN功能几乎完全相同。登录在DataAccessor中调用SignIN API，当它在视图控制器中返回时，它会弹出视图。但是，SIGN IN功能可以正常工作，并且永远不会崩溃。
编辑 - 僵尸日志：
- Address Category Event Type RefCt Timestamp Size Responsible Library Responsible Caller 0 0x11035a00 ASIFormDataRequest Malloc 1 00:16.125.952 1024 Saveology +[ASIFormDataRequest requestWithURL:] 1 0x11035a00 ASIFormDataRequest Autorelease 00:16.126.025 0 Saveology +[ASIFormDataRequest requestWithURL:] 2 0x11035a00 ASIFormDataRequest Autorelease 00:16.126.026 0 Saveology -[SaveologyDealsDataAccessor createDealsAccount:user:password:firstname:lastname:divisionid:completion:] 3 0x11035a00 ASIFormDataRequest Retain 2 00:16.126.179 0 Foundation NSRecordAllocationEvent 4 0x11035a00 ASIFormDataRequest Retain 3 00:16.126.196 0 Foundation NSRecordAllocationEvent 5 0x11035a00 ASIFormDataRequest Release 2 00:16.126.266 0 Foundation NSRecordAllocationEvent 6 0x11035a00 ASIFormDataRequest Release 1 00:16.126.267 0 Foundation NSRecordAllocationEvent 7 0x11035a00 ASIFormDataRequest Retain 2 00:16.127.268 0 Foundation NSRecordAllocationEvent 8 0x11035a00 ASIFormDataRequest Retain 3 00:16.127.302 0 Foundation NSRecordAllocationEvent 9 0x11035a00 ASIFormDataRequest Release 2 00:16.127.332 0 Foundation NSRecordAllocationEvent 10 0x11035a00 ASIFormDataRequest Retain 3 00:16.128.711 0 Foundation NSRecordAllocationEvent 11 0x11035a00 ASIFormDataRequest Release 2 00:16.128.771 0 Foundation NSRecordAllocationEvent 12 0x11035a00 ASIFormDataRequest Retain 3 00:16.129.880 0 Foundation NSRecordAllocationEvent 13 0x11035a00 ASIFormDataRequest Retain 4 00:16.129.889 0 Foundation NSRecordAllocationEvent 14 0x11035a00 ASIFormDataRequest Release 3 00:16.129.893 0 Foundation NSRecordAllocationEvent 15 0x11035a00 ASIFormDataRequest Release 2 00:16.129.912 0 Foundation NSRecordAllocationEvent 16 0x11035a00 ASIFormDataRequest Retain 3 00:16.309.250 0 Foundation NSRecordAllocationEvent 17 0x11035a00 ASIFormDataRequest Retain 4 00:16.310.289 0 Foundation NSRecordAllocationEvent 18 0x11035a00 ASIFormDataRequest Release 3 00:16.310.396 0 Foundation NSRecordAllocationEvent 19 0x11035a00 ASIFormDataRequest Release 2 00:16.310.640 0 Foundation NSRecordAllocationEvent 20 0x11035a00 ASIFormDataRequest Retain 3 00:16.310.775 0 Foundation NSRecordAllocationEvent 21 0x11035a00 ASIFormDataRequest Retain 4 00:16.310.776 0 Foundation NSRecordAllocationEvent 22 0x11035a00 ASIFormDataRequest Release 3 00:16.310.789 0 Foundation NSRecordAllocationEvent 23 0x11035a00 ASIFormDataRequest Release 2 00:16.310.807 0 Foundation NSRecordAllocationEvent 24 0x11035a00 ASIFormDataRequest Retain 3 00:16.311.443 0 Foundation NSRecordAllocationEvent 25 0x11035a00 ASIFormDataRequest Retain 4 00:16.311.469 0 Foundation NSRecordAllocationEvent 26 0x11035a00 ASIFormDataRequest Retain 5 00:16.311.491 0 Foundation NSRecordAllocationEvent 27 0x11035a00 ASIFormDataRequest Retain 6 00:16.311.496 0 Foundation NSRecordAllocationEvent 28 0x11035a00 ASIFormDataRequest Release 5 00:16.311.501 0 Foundation NSRecordAllocationEvent 29 0x11035a00 ASIFormDataRequest Release 4 00:16.311.546 0 Foundation NSRecordAllocationEvent 30 0x11035a00 ASIFormDataRequest Release 3 00:16.311.557 0 Foundation NSRecordAllocationEvent 31 0x11035a00 ASIFormDataRequest Release 2 00:16.311.563 0 Foundation NSRecordAllocationEvent 32 0x11035a00 ASIFormDataRequest Release 1 00:16.313.736 0 Foundation NSRecordAllocationEvent 33 0x11035a00 ASIFormDataRequest Release 0 00:16.320.573 0 Foundation NSRecordAllocationEvent 34 0x11035a00 ASIFormDataRequest Zombie -1 00:16.320.964 0 GraphicsServices GSEventRunModal
答案 0 :(得分：0)
启用Zombie Objects以获取有关该EXE_BAD_ACCESS错误的更多详细信息。应该告诉你一些关于它期望在那里的物体。这通常意味着您在执行代码时过早地释放了对象指针。
开启僵尸：How do I set up NSZombieEnabled in Xcode 4?
删除此[_completionHandlerSignUp release]行后会发生什么？