iOS 15导航栏和tabbar的坑

 更新了iOS 15（XCode 13）后，导航栏和Tabbar莫名其妙的改变了，导航栏变成了黑色、Tabbar变成了透明。由于框架是上一个人写的，所以具体的原因也不得知。一顿百度后解决了问题。

具体方法如下：

1.导航栏问题

if(@available(iOS13.0, *)) {

        UINavigationBarAppearance *appearance = [UINavigationBarAppearance new];

        [appearanceconfigureWithOpaqueBackground];

        appearance.backgroundColor = UIColor.whiteColor;

        self.navigationController.navigationBar.standardAppearance = appearance;

        self.navigationController.navigationBar.scrollEdgeAppearance = self.navigationController.navigationBar.standardAppearance;

    }

2.Tabbar问题

if(@available(iOS15.0, *)) {

           UITabBarAppearance * appearance = [UITabBarAppearance new];

           UIVisualEffectView *effectView = [[UIVisualEffectView alloc] initWithEffect:[UIBlurEffect effectWithStyle:UIBlurEffectStyleLight]];

           self.tabBar.scrollEdgeAppearance= appearance;

    }