Xcode 4.3.2 给出错误“无法使用超级，因为它是根类”
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Xcode 4.3.2 gives error "cannot use super because it is a root class"
提问by Ashan Marla
Lately when I updated to xcode 4.3.2 I've run into numerous new problems. In my app view controller m file, I keep getting the error "cannot use super because it is a root clause."
最近，当我更新到 xcode 4.3.2 时，我遇到了许多新问题。在我的应用程序视图控制器 m 文件中，我不断收到错误“无法使用超级，因为它是根子句”。
I've looked on the internet for hours, so any help would be appreciated.
我已经在互联网上看了几个小时，所以任何帮助将不胜感激。
Thanks
谢谢
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
@end
回答by skh
This error may also come up if your class inherits from another custom class and if you used a forward declaration of your ancestor class (@class MyAncestorClass) in your header file, but forgot to #importyour ancestor class in the implementation file.
如果您的类继承自另一个自定义类，并且您@class MyAncestorClass在头文件中使用了祖先类 ( )的前向声明，但#import在实现文件中忘记了祖先类，则也可能出现此错误。
回答by Ken Thomases
When you declared your class, you probably forgot the superclass in the @interfaceline. For example, you did
当你声明你的类时，你可能忘记了@interface行中的超类。例如，你做了
@interface MyClass
{
// ... ivars ...
}
// ... methods ...
@end
You want that first line to be:
您希望第一行是：
@interface MyClass : NSObject
or whatever superclass you intended to use.
或您打算使用的任何超类。
回答by raghul
Use this solution will help incase you encountered this problem in phonegap
使用此解决方案将帮助您在 phonegap 中遇到此问题
#import <Cordova/CDVViewController.h>
#import <Cordova/CDVCommandDelegateImpl.h>
#import <Cordova/CDVCommandQueue.h>
@interface MainViewController : CDVViewController
@end
@interface MainCommandDelegate : CDVCommandDelegateImpl
@end
@interface MainCommandQueue : CDVCommandQueue
@end
