iOS隱藏導航欄或返回按鈕

一，隱藏導航欄 隱藏導航欄html 1，self.navigationController.navigationBarHidden = YES;post 2，[self.navigationController setNavigationBarHidden:YES animated:YES]; url 二，返回按鈕 1，以空替代spa     UIBarButtonItem *temporaryB

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