Firebase存储。下载图像阵列

我正在尝试从Firebase存储文件夹下载一些图像,并将其添加到我的模型中 Rules Firebase Folder Images in folder

我的模型在这里。我必须使用文件夹中具有相同字符串名称的图像,而不是字符串(1、2、3、4、5)

struct ImageModel {
    var images: String
    var index: Int
    var imageLabel: String
    var description: String
    var comment = [String]()
}

class Model {
   static var imageModel = [
        ImageModel(images: "1", index: 0, imageLabel: "MDA", description: "description", comment: []),
        ImageModel(images: "2", index: 1, imageLabel: "Picture!", description: "some description.", comment: []),
        ImageModel(images: "3", index: 2, imageLabel: "What is this??", description: "description", comment: []),
        ImageModel(images: "4", index: 3, imageLabel: "A long named picture", description: "description", comment: []),
    ]
}

我找到了写请求的方法

func uploadMedia() {
        let storageRef = Storage.storage().reference().child("pictures")
        let megaByte = Int64(1 * 1024 * 1024)
        
        storageRef.getData(maxSize: megaByte) { (data, error) in
            guard let data = data else { return }
            let image = UIImage(data: data)
            for i in Model.imageModel {
                i.images = image
            }
        }
    }

但它有一些错误,比如

无法分配给属性:i是let常量。。。和不能 是否为UIImage类型赋值?键入字符串的步骤

如何更改型号或请求?

我在中使用我的模型 CollectionViewCell . 所以我有collectionView和Cell在里面。单元格具有图像和名称。这张照片是我必须从中获得的 Firebase Storage 我的模型中已经有了这个名字。原因是我使用的存储有时会更改图像

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        guard let cell = self.collectionView.dequeueReusableCell(withReuseIdentifier: CollectionViewCell.identifier, for: indexPath) as? CollectionViewCell else { return UICollectionViewCell() }
        cell.configureCollectionViewCell(picture: UIImage(named: String(Model.imageModel[indexPath.row].images))!, imageLabel: Model.imageModel[indexPath.row].imageLabel)
        return cell
    }

UPD:

我将模型更改为:

struct ImageModel {
    var images: UIImage
    var index: Int
    var imageLabel: String
    var description: String
    var comment = [String]()
}

class Model {
   static var imageModel = [
    ImageModel(images: UIImage(), index: 0, imageLabel: "MDA", description: "description", comment: []),
    ImageModel(images: UIImage(), index: 1, imageLabel: "Picture!", description: "some description.", comment: []),
    ImageModel(images: UIImage(), index: 2, imageLabel: "What is this??", description: "description", comment: []),
    ImageModel(images: UIImage(), index: 3, imageLabel: "A long named picture", description: "description", comment: []),
    ]
}

然后我把方法 ViewWillAppear 并试图得到错误或结果

override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        self.uploadMedia()
    }
    
    func uploadMedia() {
        let storageRef = Storage.storage().reference().child("pictures")
        let megaByte = Int64(1 * 1024 * 1024)
        
        storageRef.getData(maxSize: megaByte) { (data, error) in
            guard let data = data else { return }
            let image = UIImage(data: data)
            for (index, i) in Model.imageModel.enumerated() {
                Model.imageModel[index].images = image!
            }
            guard let error = error else  { return }
            print(error.localizedDescription)
        }
    }

什么都没发生,日志是空的

2022-05-29 20:20:09.668785+0700 diplom[14378:13214993][boringssl] boringssl\u metrics\u log\u metric\u block\u invoke(153)未能记录指标

我还有一个方法可以帮助我将模型保存到另一个模型。这就是为什么我想在我的模型中使用字符串

给你。。 CollectionView 准备 Detail VC

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        let vc = DetailVC()
        vc.picture = UIImageView(image: Model.imageModel[indexPath.row].images)
        vc.imageLbel.text = Model.imageModel[indexPath.row].imageLabel
        vc.pictureNamed = Model.imageModel[indexPath.row].images
        vc.index = Model.imageModel[indexPath.row].index
        vc.descripLabel.text = Model.imageModel[indexPath.row].description
        self.navigationController?.pushViewController(vc, animated: true)
    }

详图VC 所有物

 var pictureNamed = String()

保存的收集单元模型

struct savedCategory: Codable {
    var images: String
    var index: Int
    var imageLabel: String
    var description: String
    var comment = [String]()
}


class SavedCategoryModel {
    static var categoryModel: [savedCategory] = []
}

UserDefaults 我以前使用codable模型的地方

class UserDefaultsConfig {
    func saveData() {
        let defaults = UserDefaults.standard
        defaults.set(try? PropertyListEncoder().encode(SavedCategoryModel.categoryModel), forKey:"SavedStringArray")
    }
    func showList() {
        let defaults = UserDefaults.standard
        if let data = defaults.value(forKey:"SavedStringArray") as? Data { SavedCategoryModel.categoryModel = try! PropertyListDecoder().decode(Array<savedCategory>.self, from: data) }
    }
}

这是我的方法。所以有很多变化。。。是否有分辨率来获取图像字符串?

@objc func savePicture() {
        let newArray = savedCategory(images: self.pictureNamed, index: index, imageLabel: self.imageLbel.text!, description: self.descripLabel.text ?? "empty", comment: Model.imageModel[index].comment)
        SavedCategoryModel.categoryModel.append(newArray)
        self.userDefaults.saveData()
        self.userDefaults.showList()
    }