SWIFT

navigationview hide header swiftui

.navigationBarHidden(true)
.navigationBarTitle(Text("Home"))
.edgesIgnoringSafeArea([.top, .bottom])

swift hide navigation bar

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    navigationController?.setNavigationBarHidden(true, animated: animated)
}

override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    navigationController?.setNavigationBarHidden(false, animated: animated)
}