[iOS][iOS12]UIWebViewにおいて動画再生後にステータスバーが変更されてしまう ref: https://qiita.com/yu_okb/items/3c0489a99092719f4404

UINavigationControllerExtension.h

#import "UINavigationControllerExtension.h"

@interface UINavigationControllerExtension()

@end

@implementation UINavigationControllerExtension

- (void)viewDidLoad
{
    [super viewDidLoad];
    [UIApplication sharedApplication].statusBarHidden = NO;
}

- (BOOL)prefersStatusBarHidden
{
    return NO;
}

- (UIStatusBarStyle)preferredStatusBarStyle
{
    return UIStatusBarStyleDefault;
}


@end