修改了iOS15下导航栏变成透明的颜色 以及导航栏下面的黑色的线条

xplan-ios/Base/UI/BaseNavigationController.m

@@ -40,6 +40,17 @@
         NSFontAttributeName:[UIFont systemFontOfSize:18 weight:UIFontWeightMedium],
         NSForegroundColorAttributeName:UIColor.whiteColor
     }];
+	
+	/// scrollEdgeAppearance 属性iOS15 强制适用于 所有导航器 如果为nil 则使用 standardAppearance属性中的设置，并修改为使用透明背景  @fengshuo
+	if (@available(iOS 15.0, *)) {
+		UINavigationBarAppearance *appearance = [UINavigationBarAppearance new];
+		appearance.titleTextAttributes = @{NSFontAttributeName:[UIFont systemFontOfSize:18 weight:UIFontWeightMedium],
+										   NSForegroundColorAttributeName:UIColor.whiteColor};
+		appearance.backgroundColor = [ThemeColor appBackgroundColor];
+		self.navigationBar.standardAppearance = appearance;
+		self.navigationBar.scrollEdgeAppearance = appearance;
+	}
 }
 
+
 @end

xplan-ios/Base/UI/BaseViewController.m

@@ -20,8 +20,22 @@
 	[super viewWillAppear:animated];
 	// 根据子类属性重写判断是否隐藏导航栏
 	[self.navigationController setNavigationBarHidden:self.isHiddenNavBar animated:animated];
+	///解决iOS15 导航栏下面有一条黑色的线 @fengshuo
+	if (@available(iOS 15.0, *)) {
+		[self.navigationController.navigationBar.subviews enumerateObjectsUsingBlock:^(UIView *view, NSUInteger idx, BOOL *stop) {
+			if ([[UIDevice currentDevice].systemVersion doubleValue] >= 10.0) {
+				//iOS10,改变了导航栏的私有接口为_UIBarBackground
+				if ([view isKindOfClass:NSClassFromString(@"_UIBarBackground")]) {
+					[view.subviews enumerateObjectsUsingBlock:^(__kindof UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
+						if ([obj isKindOfClass:NSClassFromString(@"_UIBarBackgroundShadowView")]) {
+							obj.hidden = YES;
+						}
+					}];
+				}
+			}
+		}];
+	}
 }
-
 - (void)viewDidLoad {
     [super viewDidLoad];
     [self themeConfig];