Swift 中的状态栏高度

Is there any problems with Swift 2.x:

UIApplication.sharedApplication().statusBarFrame.size.height

Swift 3 or Swift 4:

UIApplication.shared.statusBarFrame.height

Make sure UIKit is imported

import UIKit

In iOS 13, you will get a deprecated warning"

'statusBarFrame' was deprecated in iOS 13.0: Use the statusBarManager property of the window scene instead.

To fix this:

let height = view.window?.windowScene?.statusBarManager?.statusBarFrame.height ?? 0

Swift is just a different language. The API elements are the same. Perhaps something like this:

let app = UIApplication.sharedApplication()
let height = app.statusBarFrame.size.height

Its just like in Objective-C:

var screenStatusBarHeight: CGFloat {
return UIApplication.sharedApplication().statusBarFrame.height
}

This is included as a standard variable in:

https://github.com/goktugyil/EZSwiftExtensions

This is what I use:

struct Screen {


static var width: CGFloat {
return UIScreen.main.bounds.width
}


static var height: CGFloat {
return UIScreen.main.bounds.height
}


static var statusBarHeight: CGFloat {
let viewController = UIApplication.shared.windows.first!.rootViewController
return viewController!.view.window?.windowScene?.statusBarManager?.statusBarFrame.height ?? 0
}


}

Then you can do:

Screen.statusBarHeight

Updated Answer Supporting iOS 13+ and older iOS Versions for Swift 5

 func getStatusBarHeight() -> CGFloat {
var statusBarHeight: CGFloat = 0
if #available(iOS 13.0, *) {
let window = UIApplication.shared.windows.filter {$0.isKeyWindow}.first
statusBarHeight = window?.windowScene?.statusBarManager?.statusBarFrame.height ?? 0
} else {
statusBarHeight = UIApplication.shared.statusBarFrame.height
}
return statusBarHeight
}

Happy Coding!

Reworked answer from Ibrahim :

extension UIApplication {
static var statusBarHeight: CGFloat {
if #available(iOS 13.0, *) {
let window = shared.windows.filter { $0.isKeyWindow }.first
return window?.windowScene?.statusBarManager?.statusBarFrame.height ?? 0
}
        

return shared.statusBarFrame.height
}
}

On my swiftUI project, this worked.

import UIKit
import SwiftUI


class SceneDelegate: UIResponder, UIWindowSceneDelegate {
    

var window: UIWindow?


func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
let contentView = ContentView()
if let windowScene = scene as? UIWindowScene {
let window = UIWindow(windowScene: windowScene)
            

if let statusBarHeight = window.windowScene?.statusBarManager?.statusBarFrame.height {
SceneDelegateDataGetter.shared.height = statusBarHeight
}
            

window.rootViewController = HostingController(rootView: contentView)
self.window = window
window.makeKeyAndVisible()
}
}


class SceneDelegateDataGetter {
static let shared = SceneDelegateDataGetter()
    

public fileprivate(set) var height: CGFloat = 0
}

When use,

SceneDelegateDataGetter.shared.height

From Peter Suwara and Bobby's answers

Updated for Swift 5:

extension UIApplication {
static var statusBarHeight: CGFloat {
if #available(iOS 13.0, *) {
let window = shared.windows.filter { $0.isKeyWindow }.first
return window?.windowScene?.statusBarManager?.statusBarFrame.height ?? 0
}
return shared.statusBarFrame.height
}
}


struct ScreenUtils {
static var width: CGFloat {
return UIScreen.main.bounds.width
}
    

static var height: CGFloat {
return UIScreen.main.bounds.height
}
    

static var statusBarHeight: CGFloat {
return UIApplication.statusBarHeight
}
}

Using:

ScreenUtils.statusBarHeight

I'm working with iOS 15 iPhone (iPad may need some work). The code I use which gets rid of the deprecated warning is as follows:

func getStatusBarHeight() -> CGFloat {
var statusBarHeight: CGFloat = 0
let scenes = UIApplication.shared.connectedScenes
let windowScene = scenes.first as? UIWindowScene
let window = windowScene?.windows.first
statusBarHeight = window?.windowScene?.statusBarManager?.statusBarFrame.height ?? 0
return statusBarHeight
}