UIVisualEffect *blurEffect;
    blurEffect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleExtraLight];

    UIVisualEffectView *visualEffectView;
    visualEffectView = [[UIVisualEffectView alloc] initWithEffect:blurEffect];

    visualEffectView.frame = self.view.bounds;
    [self.view addSubview:visualEffectView];

    CGFloat statusBarHeight = [UIApplication sharedApplication].statusBarFrame.size.height;

    UINavigationBar *navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, statusBarHeight, self.view.frame.size.width, 64)];