iOS 連續多次present 之後，想回到最初的viewController
阿新 • • 發佈：2019-02-10
// The view controller that was presented by this view controller or its nearest ancestor.
此檢視控制器的檢視控制器或其最近的祖先。
@property(nullable, nonatomic,readonly) UIViewController *presentedViewController NS_AVAILABLE_IOS(5_0);
// The view controller that presented this view controller (or its farthest ancestor.)
提出了這個檢視控制器的檢視控制器(或其最遠的祖先)。
@property(nullable, nonatomic,readonly) UIViewController *presentingViewController NS_AVAILABLE_IOS(5_0);
[self.presentingViewController.presentingViewControllerdismissViewControllerAnimated:YEScompletion:nil];
這句話的意思是找到最遠的祖先，dismiss掉。
iOS控制器堆疊是，最疊層的。最初始的畫面dismiss掉，子畫面也dismiss。