swift - 我想禁用“发布”按钮并在选择图像后再次启用它？

Question

如果用户没有选择要发布的图片，我正在尝试禁用我的发布按钮，到目前为止，我只在文本字段没有被编辑的情况下才设法禁用它。我也有两个按钮，按钮一：丢失，按钮二：找到。用户也需要点击其中一个。如果这两个按钮都没有被点击，是否也可以禁用发布按钮？

到目前为止，这是我的代码！

func handleBlancInformation(){
    address.addTarget(self, action: #selector(PostViewController.textFieldDidChange), for: UIControlEvents.editingChanged)
    breed.addTarget(self, action: #selector(PostViewController.textFieldDidChange), for: UIControlEvents.editingChanged)
    phone.addTarget(self, action: #selector(PostViewController.textFieldDidChange), for: UIControlEvents.editingChanged)
}

@objc func textFieldDidChange() {
    guard let address = address.text, !address.isEmpty, let breed = breed.text, !breed.isEmpty, let phone = phone.text, !phone.isEmpty
        else {
        postButton.setTitleColor(UIColor.lightText, for: UIControlState.normal)
            postButton.isEnabled = false
            return
    }
    postButton.setTitleColor(UIColor.white, for: UIControlState.normal)
    postButton.isEnabled = true
}

Answer 1

func handleBlancInformation(){
    address.addTarget(self, action: #selector(PostViewController.textFieldDidChange), for: .valueChanged)
    breed.addTarget(self, action: #selector(PostViewController.textFieldDidChange), for: .valueChanged)
    phone.addTarget(self, action: #selector(PostViewController.textFieldDidChange), for: .valueChanged)
}

试试这个代码我已经改变了 addTarget 事件，所以它会工作:)