ios - 无法将类型 'String?.Type' 的值转换为预期参数类型 'String?'

Question

我收到标题中声明 var updater 的错误。

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if let destination = segue.destination as? ProductViewController,
            let index = tableViewProducts.indexPathForSelectedRow?.row {

            // Check whether postData array count is greater than index
            let updaterId = postData.count > index ? postData[index] : ""

            // Initialize "productsList" instance and assign the id value and sent this object to next view controller
            var updater = productsList(id: String?, p_name: String?, image: String?, audio: String?)
            updater.id = updaterId
            destination.updater = updater

这是我的产品列表 VC:

导入基础

class productsList {

    let id: String?
    let p_name: String?
    let image: String?
    let audio: String?

    init(id: String?, p_name: String?, image: String?, audio: String?) {
        self.id = id
        self.p_name = p_name
        self.image = image
        self.audio = audio
    }

}

Answer 1

使用这个

var updater = productsList(id: updaterId, p_name: nil, image: nil, audio: nil)

而不是

var updater = productsList(id: String?, p_name: String?, image: String?, audio: String?)