swift - 类没有初始化器错误 Realm 类 Swift

Question

我收到一个类没有初始值设定项错误。这不是我设置类(class)的方式吗？这是一个 Realm 对象数据库，我想存储的属性。我是 swift 和 realm 的新手，但我认为这就是完成的方式。如果我取出 init() 函数并只分配它工作的所有值，但是像 justTook 和所有我不想要的属性都以一个值开头，我需要稍后在程序中设置它。

这是我的代码:

class MedInfo: Object {
    //  Info To Be Stored
    @objc dynamic var keyID = UUID().uuidString
    @objc dynamic var medName: String
    @objc dynamic var medDose: String
    @objc dynamic var currentDate: Date
    @objc dynamic var timeTook: Date
    @objc dynamic var lastTook: Date
    @objc dynamic var durationOfTime: Date
    @objc dynamic var doctorName: String
    @objc dynamic var rxDate: Date
    @objc dynamic var medInfo: String
    @objc dynamic var pictureOfMed: UIImage

    override static func primaryKey() -> String? {
        return "keyID"
    }

    convenience init(medName: String, medDose: String, currentDate: Date, timeTook: Date, lastTook: Date, durationOfTime: Date, doctorName: String,rxDate: Date, medInfo: String, pictureOfMed: UIImage) {
        self.medName = medName
        self.medDose = medDose
        self.currentDate = currentDate
        self.timeTook = timeTook
        self.lastTook = lastTook
        self.durationOfTime = durationOfTime
        self.doctorName = doctorName
        self.rxDate = rxDate
        self.medInfo = medInfo
        self.pictureOfMed = pictureOfMed
    }

Answer 1

您需要为所有参数设置默认值，如文档中模糊描述的那样。来自 here :

When using Realm from Swift, the Swift.reflect(_:) function is used to determine information about your models, which requires that calling init() succeed. This means that all non-optional properties must have a default value.

所有示例都说明了这一点，因此请遵循它们。因此，你的类(class)应该被宣布:

class MedInfo: Object {
    //  Info To Be Stored
    @objc dynamic var keyID = UUID().uuidString
    @objc dynamic var medName: String = ""
    @objc dynamic var medDose: String = ""
    @objc dynamic var currentDate: Date = Date()
    @objc dynamic var timeTook: Date = Date()
    @objc dynamic var lastTook: Date = Date()
    @objc dynamic var durationOfTime: Date = Date()
    @objc dynamic var doctorName: String = ""
    @objc dynamic var rxDate: Date = Date()
    @objc dynamic var medInfo: String = ""

    // UIImage not supported, you'll need to store a URL/filename or something else
    @objc dynamic var pictureOfMed: UIImage