Swift：使用Alamofire处理JSON& SwiftyJSON [英] Swift: Handling JSON with Alamofire & SwiftyJSON

问题描述

这肯定会被问到好几次，但我还没有找到正确的答案，尽管我一直很努力。

This is sure to be asked several times, but I have not yet found the right answer, although I have been looking very hard.

我使用Alamofire和SwiftyJSON，我的JSON数据看起来像这样：

I use Alamofire and SwiftyJSON and my JSON data looks like that:

{
  "528" : {
    "name" : "Name 1",
    "id" : "528",
    "product_id" : null,
    "visible" : "0",
    "level" : "2"
  },
  "29" : {
    "name" : "Name 2",
    "id" : "29",
    "product_id" : null,
    "visible" : "1",
    "level" : "1"
  },
  "173" : {
    "name" : "Name 3",
    "id" : "173",
    "product_id" : null,
    "visible" : "0",
    "level" : "2"
  },
  "143" : {
    "name" : "Name 4",
    "id" : "143",
    "product_id" : null,
    "visible" : "1",
    "level" : "2"
  },

...使用此代码：

Alamofire.request(.GET, dataURL, parameters: nil, encoding: .JSON)

    .responseJSON { (request, response, jsonData, error) in

        let json = JSON(jsonData!) 

        println(json)

    }

...所以一切都应该没问题JSON

...so everything should be fine with JSON

1. 我如何访问这些数据？我的意思是如何获取名称，ID，product_ids等

1. How can i access to that data? I mean how can i get names, ids, product_ids etc

如何将该数据（名称）放入我的TableViewController？

How can i put that data (name) to my TableViewController?

推荐答案

我在我的一个项目中使用SwiftyJSON和Alamofire。以下是我使用它的方法。

I am using both SwiftyJSON and Alamofire in one of my projects. Here is how I am using it.

1. 创建一个名为APIProtocol的协议。


2. 设置API接受类型为APIProtocol的委托的GET方法的类。


3. 设置TableViewController以实现APIProtocol。


4. 从TableViewController调用API.get（）

1. Create a protocol called APIProtocol.
2. Setup an API class with a GET method that accepts a delegate of type APIProtocol.
3. Setup TableViewController to implement the APIProtocol.
4. Call API.get() from TableViewController

代码

Code

// Step 1
protocol APIProtocol {
  func didReceiveResult(results: JSON)
}

// Step 2
func get(path: String, parameters: [String: AnyObject]? = nil, delegate: APIProtocol? = nil){
  let url = "\(self.hostname)\(path)"
  NSLog("Preparing for GET request to: \(url)")

  Alamofire.request(.GET, url, parameters: parameters)
    .responseJSON { (req, res, json, error) in
      if(error != nil) {
        NSLog("GET Error: \(error)")
        println(res)
      }
      else {
        var json = JSON(json!)
        NSLog("GET Result: \(json)")

        // Call delegate if it was passed into the call
        if(delegate != nil) {
            delegate!.didReceiveResult(json)
        }
      }
    }
}

// Step 3
class ActivityViewController: UITableViewController, APIProtocol {
  var activityModelList: NSMutableArray = [] // This is the array that my tableView is using.

  ... 

  func didReceiveResult(result: JSON) {
    var activities: NSMutableArray = []

    NSLog("Activity.didReceiveResult: \(result)")

    for (index: String, activity: JSON) in result {

      var activityModel = ActivityModel(
        id: activity["id"].intValue,
        message: activity["message"].stringValue
      )

      activities.addObject(activityModel)
    }

    // Set our array of new models
    activityModelList = activities

    // Make sure we are on the main thread, and update the UI.
    dispatch_sync(dispatch_get_main_queue(), {
      self.refreshControl!.endRefreshing()
      self.tableView.reloadData()
    })
  }
}

// Step 4
override func viewDidLoad() {
  MyAPI.get("/activities", delegate: self)
}

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