Question

我正试图从我的CoverModel获取一个项目（item.event_date）到另一个名为PhotosModel的模型中，是否有人能指出我正确的方向或演示。我可以在viewcontroller中将所述信息输入到数组中，但出于某种原因不能用于模型。

我试过

PhotosModel.eventDate = items.event_date

但没有运气。

的CollectionView：

override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        print(indexPath.row)


    let item: CoverModel = feedItems[indexPath.row] as! CoverModel

    let Storyboard = UIStoryboard(name: "Main", bundle: nil)
    let DvC = Storyboard.instantiateViewController(withIdentifier: "DetailCollectionViewController") as! DetailCollectionViewController

  // PhotosModel.eventDate = items.event_date (Not Working)

    self.navigationController?.pushViewController(DvC, animated: true)

}

PhotosModel：

class PhotosModel: NSObject, URLSessionDataDelegate {

        //properties

        weak var delegate: PhotosProtocol!

        var eventDate = String()
        var data = Data()

        let urlPath: String = "http://www.britanniaclub.co.uk/app_calls/britalbum.php?eventdate=\(eventDate)"

Answer 1

您需要声明PhotosModel类的实例。然后，在该实例上设置eventDate参数。

override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {

    print(indexPath.row)

    let item: CoverModel = feedItems[indexPath.row] as! CoverModel

    let Storyboard = UIStoryboard(name: "Main", bundle: nil)
    let DvC = Storyboard.instantiateViewController(withIdentifier: "DetailCollectionViewController") as! DetailCollectionViewController

    let newPhotos = PhotosModel()  // Create the instance
    newPhotos.eventDate = items.event_date  // Set the parameter

    self.navigationController?.pushViewController(DvC, animated: true)

}

Answer 2

您正在尝试直接在类上设置实例属性。

PhotosModel.eventDate = items.event_date

如果您只对日期感兴趣。像这样访问它

 let eventDate = items.event_date

在模型Swift 3中调用数组中的项

2 个答案: