//
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// UIViewController+BUUtilities.h
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// BUAdSDK
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//
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// Created by Siwant on 2019/4/11.
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// Copyright © 2019 bytedance. All rights reserved.
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//
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#import <UIKit/UIKit.h>
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NS_ASSUME_NONNULL_BEGIN
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@interface UIViewController (BUUtilities)
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- (void)bu_safelyPresentViewController:(UIViewController *)viewControllerToPresent animated: (BOOL)flag completion:(void (^ __nullable)(void))completion;
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// 弹出时添加导航栈
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- (void)bu_safelyPresentVC:(UIViewController *)vc needNav:(BOOL)needNav animated:(BOOL)flag completion:(void (^ __nullable)(void))completion;
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// 获取当前最后一个被present出的VC，如果没有返回self
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- (UIViewController *)bu_presentingViewController;
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// 获取当前最后一个被present出的VC，如果没有返回window的最上的topVC
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+ (UIViewController *)bu_presentingViewController;
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// 获取广义mainWindow的rootViewController
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+ (nullable UIViewController*)bu_mainWindowRootViewController;
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// 获取指定UIResponder的链下游第一个ViewController对象
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+ (nullable UIViewController*)bu_nextViewControllerFor:(UIResponder* _Nullable)responder;
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// 获取指定UIResponder的链下游第一个UINavigationController对象
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+ (nullable UINavigationController*)bu_nextNavigationControllerFor:(UIResponder* _Nullable)responder;
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/** 查找当前显示的ViewController*/
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+ (UIViewController *)bu_topViewController;
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+ (UIViewController *)bu_recursiveFindCurrentShowViewControllerFromViewController:(UIViewController *)fromVC;
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@end
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NS_ASSUME_NONNULL_END
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