問題

升級到ios15之后，原來的barTintColor將不會生效

解決

  if(@available(iOS 15.0,*)){
        UINavigationBarAppearance *apperance=[[UINavigationBarAppearance alloc]init];
        apperance.backgroundColor=[UIColor xxxColor];//設置背景色
        [apperance setTitleTextAttributes:@{
                    NSFontAttributeName:[UIFont systemFontOfSize:18],
                    NSForegroundColorAttributeName:titleColor
        }];//設置標題字體
        apperance.shadowImage = [[UIImage alloc]init];
        apperance.shadowColor=nil;//分割線去除
        [UINavigationBar appearance].standardAppearance=apperance;
        [UINavigationBar appearance].scrollEdgeAppearance=[UINavigationBar appearance].standardAppearance;//重新賦值
    }