[英]Unable to change the color to tabBar?
我在 parantTabBarController class 中有以下方法: 可以看到使 tabBar 完全透明的各種嘗試。 唯一有效的是在頂部找到的那個。
override func viewDidLoad() {
super.viewDidLoad()
UITabBar.appearance().barTintColor = UIColor.clear
UITabBar.appearance().backgroundImage = UIImage()
// UITabBar.appearance().barTintColor = UIColor.blue
// changeTabBarOpacity()
// self.tabBar.unselectedItemTintColor = UIColor(red: 17.0/255.0, green: 70.0/255.0, blue: 95.0/255.0, alpha: 0.4)
// self.tabBar.backgroundColor = UIColor(red: 17.0/255.0, green: 70.0/255.0, blue: 95.0/255.0, alpha: 0.0)
// self.tabBar.backgroundColor = UIColor.clear
// self.tabBar.backgroundImage = UIImage()
// self.tabBar.shadowImage = UIImage() // removes the border
}
但是,使用這種方法,我無法在其他視圖控制器中更改同一 tabBar 的背景顏色。 我嘗試用白色圖像替換圖像,更改背景顏色: UITabBar.appearance().backgroundColor = UIColor.white
但沒有任何效果。
我怎樣才能在一個頁面上有一個半透明的 tabBar 而在所有其他頁面上有一個白色的?
@isa123 在 appdelegate didFinishLaunchingWithOptions 方法中嘗試此代碼
UITabBar.appearance().tintColor = .white
UITabBar.appearance().barTintColor = UIColor(named: "PrimaryDark")
UITabBar.appearance().isOpaque = false
UITabBar.appearance().backgroundImage = UIImage.init(color: UIColor(named: "PrimaryDark")!, size: CGSize(width: 1, height: 1))
Swift 5:
好的,我找到了解決方案,主要是使用UITabBar
的isTranslucent
屬性。
如果您想設置清晰的顏色,那么您只需將isTranslucent
設置為 true。 如果您想應用其他 colors 則將isTranslucent
設置為 false。
使用下面的 TabBarViewController class 到您的 TabBarViewController
class TabBarViewController: UITabBarController, UITabBarControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
self.delegate = self
self.tabBar.isTranslucent = true
UITabBar.appearance().backgroundImage = UIImage()
//This is for removing top line from the tabbar.
UITabBar.appearance().layer.borderWidth = 0.0
UITabBar.appearance().clipsToBounds = true
}
// This method will get called when you tap on any tab
func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
if viewController == tabBarController.viewControllers?[0] { //<----- This is first viewController
//If you set isTranslucent to true then no need to set barTintColor. it will make your tabBar transparent
self.tabBar.isTranslucent = true
} else if viewController == tabBarController.viewControllers?[1] { //<----- This is second viewController
self.tabBar.isTranslucent = false
// the tab bar will provide an opaque background black for UIBarStyleBlack or white for UIBarStyleDefault if barTintColor is nil.
self.tabBar.barTintColor = .white
// OR
// self.tabBar.barTintColor = nil
} else {
self.tabBar.isTranslucent = false
self.tabBar.barTintColor = .red
}
return true
}
}
Output:-
希望這可以幫助
我使用此代碼在 UITabBarController 的自定義子類中配置選項卡欄。 它支持 iOS 15 和 XCode 13 更新。
let backgroundColor = UIColor.red
let selectedItemTextColor = UIColor.black
let unselectedItemTextColor = UIColor.white
if #available(iOS 15, *) {
let tabBarAppearance = UITabBarAppearance()
tabBarAppearance.backgroundColor = backgroundColor
tabBarAppearance.stackedLayoutAppearance.selected.titleTextAttributes = [.foregroundColor: selectedItemTextColor]
tabBarAppearance.stackedLayoutAppearance.normal.titleTextAttributes = [.foregroundColor: unselectedItemTextColor]
tabBar.standardAppearance = tabBarAppearance
tabBar.scrollEdgeAppearance = tabBarAppearance
} else {
UITabBarItem.appearance().setTitleTextAttributes([.foregroundColor: selectedItemTextColor], for: .selected)
UITabBarItem.appearance().setTitleTextAttributes([.foregroundColor: unselectedItemTextColor], for: .normal)
tabBar.barTintColor = backgroundColor
}
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