我有一个自定义的UIVIewController,它是其他Controller的基类,并且有一个自定义UIView变量的实例,该实例由继承的类访问。BaseViewController.h@interfaceBaseViewController:UIViewController{UIView*_vwHeader;}@endBaseViewController.m#import"BaseViewController.h"@implementationBaseViewController-(void)loadView{[superloadView];_vwHeader=[[UIViewal