ios - 将循环中的对象从字典添加到数组

Question

我想将字典中的对象添加到数组。

我从 JSON 获取信息，我想用两个键和两个值在循环中添加这些信息:"name": value1, "imageURL": value2。

我的循环中有 10 个项目，所以我尝试了这段代码，但是缺少 []:

let urlString = "https://api.unsplash.com/photos/?client_id=71ad401443f49f22556bb6a31c09d62429323491356d2e829b23f8958fd108c4"
let url = URL(string: urlString)!
let urlRequest = URLRequest(url: url)
let config = URLSessionConfiguration.default
let session = URLSession(configuration: config)

var arr = [String]()
let task = session.dataTask(with: urlRequest, completionHandler: { (data, response, error) in
    // do stuff with response, data & error here
    if let statusesArray = try? JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? [[String: Any]] {
        for item in statusesArray! {
            let photos = item["urls"] as? [String: Any]
            let photo = photos?["small"] as? String
            var myDictionary = [
                "name": "test",
                "imageURL": photo]
            for (key, value) in myDictionary {
                arr.append("\(key): \(value)")
            }
        }
        print(arr)
    }
})

这给了我这个:

["imageURL: https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name: test", "imageURL: https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name: test", "imageURL: https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name: test", "imageURL: https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name: test", "imageURL: https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name: test", "imageURL: https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name: test", "imageURL: https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name: test", "imageURL: https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name: test", "imageURL: https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name: test", "imageURL: https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name: test"]

现在，我想要这个(在循环中的每个对象上添加 []):

[["imageURL": "https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name": "test"], ["imageURL": "https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name": "test"], ["imageURL": "https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name": "test"], ["imageURL": "https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name": "test"], ["imageURL": "https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name": "test"], ["imageURL": "https://images.unsplash.com/photo-1479859752262-6f02b79ad6ad?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&s=a613971b6da0b305154e37bbe01ed833", "name": "test"]]

我该如何解决这个问题？

Answer 1

更改这部分代码

var myDictionary = [
    "name": "test",
    "imageURL": photo]
for (key, value) in myDictionary {
    arr.append("\(key): \(value)")
}

对此

var myDictionary = [
    "name": "test",
    "imageURL": photo]
arr.append(myDictionary)

您将字典添加到一个数组中，这样您就有了一个充满字典的数组。每个字典都是您的一个对象的完整表示。

编辑

声明你的数组“arr”来保存字典而不是字符串。就像错误状态一样:

var arr = [[String:String]]()