iOS-navigation 섀도우 및 tabbar 섀도우 효과

tabbar
기본 검은 선을 제거하고 그림자를 설정하고 코드를 UItabBarController에 추가합니다

self.tabBar.backgroundColor = [UIColor whiteColor];
    [[UITabBar appearance] setShadowImage:[UIImage new]];
    [[UITabBar appearance] setBackgroundImage:[[UIImage alloc]init]];
    [self dropShadowWithOffset:CGSizeMake(0, -0.5)
                                                           radius:1
                                                            color:[UIColor grayColor]
                                                          opacity:0.3];

섀도우 더하기 방법:

- (void)dropShadowWithOffset:(CGSize)offset
                      radius:(CGFloat)radius
                       color:(UIColor *)color
                     opacity:(CGFloat)opacity {
    
    // Creating shadow path for better performance
    CGMutablePathRef path = CGPathCreateMutable();
    CGPathAddRect(path, NULL, self.tabBar.bounds);
    self.tabBar.layer.shadowPath = path;
    CGPathCloseSubpath(path);
    CGPathRelease(path);
    
    self.tabBar.layer.shadowColor = color.CGColor;
    self.tabBar.layer.shadowOffset = offset;
    self.tabBar.layer.shadowRadius = radius;
    self.tabBar.layer.shadowOpacity = opacity;
    
    // Default clipsToBounds is YES, will clip off the shadow, so we disable it.
    self.tabBar.clipsToBounds = NO;
}

navigation
자체 검은 선을 제거하는 방법,viewWillAppear에서 코드

 UIImageView *navBarHairlineImageView;
    navBarHairlineImageView = [self findHairlineImageViewUnder:self.navigationController.navigationBar];
    navBarHairlineImageView.hidden = YES;

이미지 뷰를 찾는 방법

- (UIImageView *)findHairlineImageViewUnder:(UIView *)view {
    if ([view isKindOfClass:UIImageView.class] && view.bounds.size.height <= 1.0) {
        return (UIImageView *)view;
    }
    for (UIView *subview in view.subviews) {
        UIImageView *imageView = [self findHairlineImageViewUnder:subview];
        if (imageView) {
            return imageView;
        }
    }
    return nil;
}

그리고 음영을 넣어서tabbar 방법과 같이 해당하는 코드를 바꾸면 됩니다.