How to hide a keyboard in SwiftUI

hideKeyboard_swiftui.swift

extension UIApplication {
    func endEditing() {
        sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
    }
}

extension View {
    func endEditing() {
        UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
    }
}

hideKeyboard_uikit.swift

extension UIView {
    open override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesBegan(touches, with: event)

        UIApplication.shared.windows
            .first { $0.isKeyWindow }?
            .endEditing(true)
    }
}