ios应用程序崩溃，“消息发送到解除分配的实例”-iosapplicationcrashedwith“messagesendtodeallocatedinstance”

My app crashed and the code is the following:

我的应用程序崩溃，代码如下：

else if(...)
    {
        CGDetailView *detailView = [[CGDetailView alloc] init];
        ContactGroup *cOntactGroup= [[ContactGroup alloc] init];
        [contactGroup setObjectStatus:NewObject];       
        [detailView setContactGroup:contactGroup];
        [detailView newContactGroup:YES];
        [contactGroup release];

        UIBarButtonItem *temporaryItem=[[UIBarButtonItem alloc] init];
        temporaryItem.title = NSLocalizedString(@"back", @"");
        self.navigationItem.backBarButtOnItem= temporaryItem;
        [temporaryItem release];

        [[self navigationController] pushViewController:detailView animated:YES];
        [detailView release];
    }

The error is "message sent to deallocated instance" and it regards the object of type CGDetailView. I use the alloc-init-release pattern, and I don't really understand why the app crashed. It usually works.

错误是“消息发送到解除分配的实例”，它关注CGDetailView类型的对象。我使用alloc-init-release模式，我真的不明白应用程序崩溃的原因。它通常有效。

iOS 7.1 and device is iPhone5 if that helps.

如果有帮助，iOS 7.1和设备是iPhone5。

1 个解决方案