iOS-View中或者任意类中获取当前控制器

6月30日更新Swift版本.
摘自我的GitHub

https://github.com/RoJoHub/LHPackage

Swift

class func getAppTopController()->UIViewController{

        var topController :UIViewController? = UIApplication.shared.keyWindow!.rootViewController

        while topController?.presentedViewController != nil {
            topController = topController?.presentedViewController;
        }

        return topController!;
    }



    class func attachViewController(view:UIView)->UIViewController?{

        let controller:UIViewController?

        var superView:UIView?=view.superview
        var nextResponder:UIResponder?

        while superView != nil {

            nextResponder=nextResponder?.next

            if (nextResponder?.isKind(of: UIViewController.self))! {
                controller=nextResponder as! UIViewController!
                return controller
            }

            superView=superView?.superview
        }
        return nil

    }

Objective-C

//顶级控制器

- (void)getCurrentVC
{
    UIViewController *topController = [UIApplication sharedApplication].keyWindow.rootViewController;

    while (topController.presentedViewController) {
        topController = topController.presentedViewController;
    }

    _viewController=topController;
}


//当前视图
-(UIViewController *)currentViewController{
    UIViewController *vc;
    for (UIView* next = [self superview]; next; next = next.superview) {
        UIResponder* nextResponder = [next nextResponder];
        if ([nextResponder isKindOfClass:[objc_getClass("UIViewController") class]] ) {
            vc=(UIViewController*)nextResponder;

            return vc;
        }
    }
    return vc;
}



//获取UIView所在的视图控制器（UIViewController）

 (1)UIView-Extent.h




#import 




@interface UIView (Extend)




- (UIViewController *)viewController;




@end







(2) UIView-Extent.m

#import "UIView+Extend.h"




@implementation UIView (Extend)




- (UIViewController*)viewController {

    for (UIView* next = [self superview]; next; next = next.superview) {

        UIResponder* nextResponder = [next nextResponder];

        if ([nextResponder isKindOfClass:[UIViewController class]]) {

            return (UIViewController*)nextResponder;

        }

    }

    return nil;

}




@end