火箱存储。下载图像数组

Question

我正在尝试从firebase存储文件夹下载一些图像，然后将其放入我的模型规则firebase 文件夹 文件夹中的图像

我的模型在这里。我必须使用字符串（1,2,3,4,5），我必须使用来自文件夹的图像，该图像

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: []),
    ]
}

我找到了如何编写请求的

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
            }
        }
    }

字符串名称，但它有一些错误，例如

无法分配给财产：我是一个让人常数...和....不能 分配类型uiimage的值？键入字符串

如何更改模型或请求？

我在CollectionViewCell中使用我的模型。因此，如果它在内部有收集视图和单元格。单元具有图像和名称。我必须从firebase Storage和名称中获得的此图像。原因是使用我的图像有时

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
    }

存储

的

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: []),
    ]
}

会

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)
        }
    }

更改 发生，日志是空的

2022-05-29 20：20：09.668785+0700外交部[14378：13214993] [Boringssl] boringssl_metrics_log_metric_block_invoke（153）无法记录指标

我也有可以帮助我将模型保存到另一个模型的方法。 为什么我想在此处使用

。

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)
    }

字符串

 var pictureNamed = String()

那

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


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

就是 代码> UserDefaults 我在此之前

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) }
    }
}

和以下是我的方法。因此，有很多更改...是否有任何解决图像字符串的决议？

@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()
    }

Answer 1

您需要直接访问图像数组，而不是对每个项目的引用。

for (index, i) in Model.imageModel.enumerated() {
    Model.imageModel[index].images = image
}

另外，您的图像属性接受了一个字符串，如下所示：

var images: String

但是您正在尝试为其分配uiimage。我不确定您要添加到ImageModel的内容中，也许您可​​以详细说明？

回答更新的问题：

首先，允许您的结构接受images作为uiimage：

struct ImageModel {
    var images: UIImage // <-- from String to UIImage
    var index: Int
    var imageLabel: String
    var description: String
    var comment = [String]()
}

然后，更改此行：

cell.configureCollectionViewCell(picture: UIImage(named: String(Model.imageModel[indexPath.row].images))!, imageLabel: Model.imageModel[indexPath.row].imageLabel)

TO：

cell.configureCollectionViewCell(picture: Model.imageModel[indexPath.row].images, imageLabel: Model.imageModel[indexPath.row].imageLabel)

和一个最终建议，看来您在imageModel.images中仅存储1个图像，因此也许将变量名称更改为单数image so：

struct ImageModel {
    var image: UIImage // <-- from String to UIImage
    var index: Int
    var imageLabel: String
    var description: String
    var comment = [String]()
}

让我知道这很有意义