G. *_*eve 166 uinavigationcontroller swift ios15 xcode13
我的 iOS 应用程序使用故事板作为 UI,并使用自定义色调作为导航栏的背景颜色。
我已经在 Xcode 13 beta 5 上测试了我的应用程序,导航栏为“白色”,并且导航栏上的文本不可见。
在https://developer.apple.com/forums/thread/682420的苹果开发者论坛中,它指出“在 iOS 15 中,UIKit 已将scrollEdgeAppearance(默认情况下会生成透明背景)的使用扩展到所有导航栏”。要恢复旧的外观,您必须采用新的 UINavigationBar 外观 API
我将以下代码(来自上面的链接)添加到应用程序委托“application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions”:
if #available(iOS 13, *) {
let navigationController = UINavigationController(navigationBarClass: nil, toolbarClass: nil)
let navigationBar = navigationController.navigationBar
let appearance = UINavigationBarAppearance()
appearance.configureWithOpaqueBackground()
appearance.backgroundColor = UIColor(red: 0.0/255.0, green: 125/255.0, blue: 0.0/255.0, alpha: 1.0)
navigationBar.standardAppearance = appearance;
navigationBar.scrollEdgeAppearance = navigationBar.standardAppearance
navigationBar.isTranslucent = false
}
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这并不能解决问题。我仍然在故事板编辑器中为导航栏设置了自定义色调。我是否需要删除自定义色调,或者我是否错误地实现了外观 API?
Bor*_* Y. 164
要使用您自己的配色方案,请使用以下命令:
迅速
// White non-transucent navigatio bar, supports dark appearance
if #available(iOS 15, *) {
let appearance = UINavigationBarAppearance()
appearance.configureWithOpaqueBackground()
UINavigationBar.appearance().standardAppearance = appearance
UINavigationBar.appearance().scrollEdgeAppearance = appearance
}
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Objective-C
if (@available(iOS 15.0, *)) {
UINavigationBarAppearance *navBarAppearance = [[UINavigationBarAppearance alloc] init];
navBarAppearance.backgroundColor = [UIColor redColor];
[navBarAppearance configureWithOpaqueBackground];
[UINavigationBar appearance].standardAppearance = navBarAppearance;
[UINavigationBar appearance].scrollEdgeAppearance = navBarAppearance;
}
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要获得默认的半透明行为(iOS 15 之前的默认行为),只需设置scrollEdgeAppearance:
迅速
if #available(iOS 15, *) {
UINavigationBar.appearance().scrollEdgeAppearance = UINavigationBarAppearance()
}
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Objective-C
if (@available(iOS 15.0, *)) {
[UINavigationBar appearance].scrollEdgeAppearance = [[UINavigationBarAppearance alloc] init];
}
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G. *_*eve 93
无需更改故事板中的任何内容。这是添加到 App Delegate 后最终起作用的解决方案application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions:
//Fix Nav Bar tint issue in iOS 15.0 or later - is transparent w/o code below
if #available(iOS 15, *) {
let appearance = UINavigationBarAppearance()
appearance.configureWithOpaqueBackground()
appearance.titleTextAttributes = [.foregroundColor: UIColor.white]
appearance.backgroundColor = UIColor(red: 0.0/255.0, green: 125/255.0, blue: 0.0/255.0, alpha: 1.0)
UINavigationBar.appearance().standardAppearance = appearance
UINavigationBar.appearance().scrollEdgeAppearance = appearance
}
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请注意,必须将标题文本属性设置为“白色”,因为如果未指定该属性,则标题文本默认为黑色。
另请注意,这仅适用于 iOS 版本 15.0 或更高版本。它不适用于早期版本,因为故事板导航栏自定义色调是默认行为。
Ilu*_*ioN 44
如果有人需要G. Steve答案的Objective C版本
if (@available(iOS 15, *)){
UINavigationBarAppearance *appearance = [[UINavigationBarAppearance alloc] init];
[appearance configureWithOpaqueBackground];
appearance.titleTextAttributes = @{NSForegroundColorAttributeName : UIColor.whiteColor};
appearance.backgroundColor = [UIColor colorWithRed:0.0/255.0 green:125/255.0 blue:0.0/255.0 alpha:1.0];
[UINavigationBar appearance].standardAppearance = appearance;
[UINavigationBar appearance].scrollEdgeAppearance = appearance;
}
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Atk*_*tka 31
它在界面构建器中为我排序(xcode 13 - 针对 iOS 13 及更高版本进行了测试),并且不需要检查 iOS 15 可用性(即 @available)
祝你好运
wli*_*xcc 17
就我而言\xef\xbc\x8c,当我更新到xcode13和iOS15\xe3\x80\x82时,我发现navigationBar和tabBar变成透明\xe3\x80\x82 我的viewController嵌入在UINavigationController中
\n\n经过一系列测试,我发现设置navigationController的backgroundColor是解决这个问题的最佳方法
\nnavigationController?.view.backgroundColor = .yourColor\nRun Code Online (Sandbox Code Playgroud)\n颜色设置好后一切就OK了
\n\n小智 11
此代码可以放在任何地方,而不仅仅是在 App Delegate 中来修复 iOS15 上的问题:
if (@available(iOS 15, *)){
UINavigationBarAppearance *appearance = [[UINavigationBarAppearance alloc] init];
[appearance configureWithOpaqueBackground];
appearance.titleTextAttributes = @{NSForegroundColorAttributeName : UIColor.blackColor};
appearance.backgroundColor = [UIColor colorWithRed:0.0/255.0 green:125/255.0 blue:0.0/255.0 alpha:1.0];
self.navigationController.navigationBar.standardAppearance = appearance;
self.navigationController.navigationBar.scrollEdgeAppearance = appearance;
}
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Xcode 13+
在 iOS 15 中,UIKit 已将 的用法scrollEdgeAppearance(默认情况下会生成透明背景)扩展到所有导航栏。背景由滚动视图何时滚动导航栏后面的内容来控制。
要恢复旧的外观,您必须采用新的 UINavigationBar 外观 API UINavigationBarAppearance,. 删除现有的自定义并执行如下操作:
let appearance = UINavigationBarAppearance()
appearance.backgroundColor = <your tint color>
navigationBar.standardAppearance = appearance
navigationBar.scrollEdgeAppearance = appearance
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您还可以将外观代理与上面的代码一起使用,但替换navigationBar.appearance().scrollEdgeAppearance = appearance最后一行。
我创建了这个扩展来支持 iOS 15 和 iOS 12,以便仅在需要的地方而不是在所有应用程序中更改导航栏背景(色调)和标题颜色。
extension UINavigationBar {
func update(backroundColor: UIColor? = nil, titleColor: UIColor? = nil) {
if #available(iOS 15, *) {
let appearance = UINavigationBarAppearance()
appearance.configureWithOpaqueBackground()
if let backroundColor = backroundColor {
appearance.backgroundColor = backroundColor
}
if let titleColor = titleColor {
appearance.titleTextAttributes = [NSAttributedString.Key.foregroundColor: titleColor]
}
standardAppearance = appearance
scrollEdgeAppearance = appearance
} else {
barStyle = .blackTranslucent
if let backroundColor = backroundColor {
barTintColor = backroundColor
}
if let titleColor = titleColor {
titleTextAttributes = [NSAttributedString.Key.foregroundColor: titleColor]
}
}
}
}
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并在需要的地方使用它(在我的例子中是 UIViewController 的 UI 配置),如下所示
func configureNavigationController() {
navigationController?.navigationBar.update(backroundColor: .blue, titleColor: .white)
}
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