iOS 15 导航栏失效的坑

iOS15下重写的导航栏变白失效，无论怎么设置都没有效果，解决方案如下：

if (@available(iOS 15.0, *)) {
        UINavigationBarAppearance *navigationBarAppearance = [[UINavigationBarAppearance alloc]init];
        [navigationBarAppearance configureWithOpaqueBackground];
        [navigationBarAppearance setBackgroundImage:[UIImage imageNamed:@"nav_bg"]];
        navigationBarAppearance.titleTextAttributes = @{NSForegroundColorAttributeName:[UIColor whiteColor],NSFontAttributeName:FONT_SIZE(18)};
        self.navigationBar.scrollEdgeAppearance = navigationBarAppearance;
        self.navigationBar.standardAppearance = navigationBarAppearance;
    }

写法1：

//重写的导航栏这样设置
self.navigationBar.scrollEdgeAppearance = navigationBarAppearance;
self.navigationBar.standardAppearance = navigationBarAppearance;

写法2：

//控制器中这样设置
self.navigationController.navigationBar.scrollEdgeAppearance = navigationBarAppearance;
self.navigationController.navigationBar.standardAppearance = navigationBarAppearance;