境界中的一串字符串

Question

我使用UICollectionView来显示各种图像。我将图像的路径存储在领域中。我想创建一个图像数组并将其存储在所有图像中的所有图像中。

我的代码：

我的领域对象

class cityDetail: Object {

    dynamic var id = UUID().uuidString
    dynamic var cityName = ""
    dynamic var descrp = ""
    dynamic var state = ""
    dynamic var season = ""
    dynamic var longitude = ""
    dynamic var latitude = ""
    var imgList = List<cityImage>()
override static func primaryKey() -> String? {
    return "id"
}}
class cityImage:Object {
    dynamic var imgStr = ""}

我的功能：

@IBAction func setIMG(_ sender:UIButton) {
    self.img.isHidden = true
    self.imgArray.append(imgURL)
    print(imgArray)
    newImage.imgStr = imgURL
    citydetails.imgList.append(newImage)
    let realm = try! Realm()
    try! realm.write {
        realm.add(newImage)
    }
    self.collection.reloadData()

}

我想要图像路径数组的函数：

@IBAction func sendData(_ sender:UIButton) {

    let citydetails = cityDetail()
    let newImage = cityImage()


    citydetails.cityName = self.cityName.text!
    citydetails.descrp = self.descrp.text!
    citydetails.state = self.state.text!
    citydetails.season = self.season.text!
    citydetails.latitude = String(lon)
    citydetails.longitude = String(lat)


    citydetails.imgList = newImage
    let realm = try! Realm()
    do {
        try realm.write() {
            realm.add(citydetails)
        }
    } catch {

    }
    self.collection.reloadData()
    self.img.isHidden = true
}