UIImagePicker.swift

@IBAction func takePhoto(_ sender: Any) {
    openPhotoPicker(withSource: .camera)
}
    
@IBAction func choosePhoto(_ sender: Any) {
    openPhotoPicker(withSource: .photoLibrary)
}

@discardableResult private func openPhotoPicker(withSource source: UIImagePickerController.SourceType) -> Bool {
    guard UIImagePickerController.isSourceTypeAvailable(source) else { return false }
    let picker: UIImagePickerController = {
        let picker = UIImagePickerController()
        picker.delegate = self
        picker.sourceType = source
        return picker
    }()
    present(picker, animated: true, completion:nil)
    return true
}