swift基础之json解析

概述import UIKitclass ViewController: UIViewController { @IBOutlet weak var image: UIImageView! @IBOutlet weak var tittle: UILabel! @IBOutlet weak var myDescription: UITextView!

import UIKitclass VIEwController: UIVIEwController {        @IBOutlet weak var image: UIImageVIEw!    @IBOutlet weak var tittle: UILabel!    @IBOutlet weak var myDescription: UITextVIEw!        var dataJsON = NSMutableData()        overrIDe func vIEwDIDLoad() {        super.vIEwDIDLoad()                let stringURL:Nsstring = "https://itunes.apple.com/es/RSS/topfreeapplications/limit=10/Json"        //building NSURL        let url = NSURL(string: stringURL as String)        //building NSURLRequest        let request = NSURLRequest(URL: url!)        //connection        let connection: NSURLConnection? = NSURLConnection(request: request,delegate: self)                if (connection != nil){            print("Connecting...")            dataJsON = NSMutableData()        }        else{            print("Connection Failed")        }    }        overrIDe func dIDReceiveMemoryWarning() {        super.dIDReceiveMemoryWarning()    }        func connection(connection: NSURLConnection!,dIDFailWithError error: NSError!){        print("Error: \(error)")    }        func connection(connection: NSURLConnection!,dIDReceiveResponse response: NSURLResponse!){        print("Received response: \(response)")        //restore data        dataJsON.length = 0    }        func connection(connection: NSURLConnection!,dIDReceiveData data:NSData!){        self.dataJsON.appendData(data)    }        func connectionDIDFinishLoading(connection: NSURLConnection!){                do {            let dic:NSDictionary! = try NSJsONSerialization.JsONObjectWithData(dataJsON,options: NSJsONReadingOptions.MutableContainers) as? NSDictionary                        //get from JsON            let top1: AnyObject = ((dic["Feed"] as! NSDictionary) ["entry"]! as! NSArray) [0]            let imgJson: AnyObject = (top1["im:image"] as! NSArray) [2]            let url = NSURL(string: imgJson.objectForKey("label") as! String)            let data = NSData(contentsOfURL: url!)            let img = UIImage(data: data!)            image.image = img            //get tittle and description            let tit = (top1["Title"] as! NSDictionary) ["label"] as! Nsstring            let desc = (top1["summary"] as! NSDictionary) ["label"] as! Nsstring            tittle.text = tit as String            myDescription.text = desc as String        } catch {            // failure            print("Fetch Failed: \((error as NSError).localizedDescription)")        }    }    }

运行结果

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