[iOS] 상단 Safety Area 영역

- (CGFloat)safetyAreaHeight {
    if (@available(iOS 11.0, *)) {
        UIEdgeInsets edgeInsets = [UIApplication sharedApplication].windows[0].safeAreaInsets;
        if (edgeInsets.top != 0 && edgeInsets.bottom != 0) {
            CGFloat height = [UIApplication sharedApplication].windows.firstObject.safeAreaInsets.top;
            return height;
        }else{
            return 20;
        }
    } else {

        return 20;
    }
    return 20;
}

NON-Notch - 20px

pro가 45

mini가 50으로 영역이 더 큼. 참고