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UINavigaionController

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objective-c - 为什么UINavigaionController的子类会调用Default Constructor和Custom Constructor?

@implementationNVController//PlainInitmethod-(id)init{self=[superinit];if(self){}returnself;}//CustomInitMethod-(id)initWithRootViewController:(UIViewController*)rootViewController{self=[superinitWithRootViewController:rootViewController];if(self)`entercodehere`{}returnself;}@endNVController*ins