[Swift/iOS]UI Tab bar code memo

https://velog.io/@j00hyun/3.8-Tab-Bar-Controllers

 

var stackedLayoutAppearance: UITabBarItemAppearance

The appearance attributes for items with a stacked layout.

 

 

 

The 3 UITabBarItemAppearances

Right around the 8 minute mark in the WWDC video, apple mentions there are 3 different appearances for UITabBarAppearance:

• stackedLayoutAppearance – This appears to be the standard appearance
• inlineLayoutAppearance – “Which you’ll see on iPads”
• compactInlineLayoutAppearance – “Which you’ll see on smaller phones”

These 3 appearance are used differently than the ones for UINavigationViewAppearance. They’re a property of the StandardAppearance, not of a UITabBar. To update them, you do something like:

https://schwiftyui.com/swiftui/customizing-your-tabviews-bar-in-swiftui/

Customizing your TabView's Bar in SwiftUI - SchwiftyUI

 

 

let calendarVC = CalendarViewController()
let diaryVC = UINavigationController(rootViewController: DiaryViewController())
let dataVC = DataViewController()
        
let tabBarController = UITabBarController()
tabBarController.setViewControllers([calendarVC, diaryVC, dataVC], animated: true)
        
if let items = tabBarController.tabBar.items {
items[0].title = "Calendar"
items[0].image = UIImage(systemName: "calendar.circle")
items[0].selectedImage = UIImage(systemName: "calendar.circle.fill")
            
items[1].title = "Diary"
items[1].image = UIImage(systemName: "pencil.circle")
items[1].selectedImage = UIImage(systemName: "pencil.circle.fill")
            
items[2].title = "Data"
items[2].image = UIImage(systemName: "square.and.arrow.down.on.square")
items[2].selectedImage = UIImage(systemName: "square.and.arrow.down.on.square.fill")
}
        
UITabBar.appearance().backgroundColor = .black // 배경
UITabBar.appearance().tintColor = .white // 선택됐을 때 색
UITabBar.appearance().unselectedItemTintColor = .systemGray
        
window?.rootViewController = tabBarController
window?.makeKeyAndVisible()