监听键盘

.onReceive(NotificationCenter.default.publisher(for: UIApplication.keyboardWillShowNotification)) { _ in
                print("键盘将出现!")
                isEditing = true
            }
        .onReceive(NotificationCenter.default.publisher(for: UIApplication.keyboardWillHideNotification)) { _ in
                print("键盘将隐藏!")
                isEditing = false
            }