UIStoryboardSwizzling.h

//
//  UIStoryboard+Swizzling.h
//
//  Created by thanhvu on 7/21/19.
//  Copyright © 2019 thanhvu. All rights reserved.
//

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface UIStoryboard (Swizzling)
- (UIViewController *)swizz_instantiateViewControllerWithIdentifier:(NSString *)identifier;
@end

NS_ASSUME_NONNULL_END

UIStoryboardSwizzling.m

//
//  UIStoryboard+Swizzling.m
//
//  Created by thanhvu on 7/21/19.
//  Copyright © 2019 thanhvu. All rights reserved.
//

#import "UIStoryboard+Swizzling.h"
#import <objc/runtime.h>
@implementation UIStoryboard (Swizzling)
+(void)load
{
    // 1
    Method originMethod = class_getInstanceMethod([UIStoryboard class], @selector(instantiateViewControllerWithIdentifier:));
    Method swizzMethod = class_getInstanceMethod([UIStoryboard class], @selector(swizz_instantiateViewControllerWithIdentifier:));
    
    // 2
    method_exchangeImplementations(originMethod, swizzMethod);
}

-(UIViewController *)swizz_instantiateViewControllerWithIdentifier:(NSString *)identifier
{
    // Inject code
    // 3
    return [self swizz_instantiateViewControllerWithIdentifier:identifier];
}
@end