如果我用NGViewController*ngView=[[NGViewControlleralloc]initWithNibName:Nilbundle:Nil];[selfpresentViewController:ngViewanimated:NOcompletion:nil];上面的代码Controller将转到NGViewController页面。但是如果我使用这个导航ControllerNGViewController*ngView=[[NGViewControlleralloc]initWithNibName:Nilbundle:Nil];[self.navigation