swift初试-简单的天气预报

import UIKit

class ViewController: UIViewController {

    @IBOutlet var cityname: UILabel

    @IBOutlet var Temp: UILabel

    override func viewDidLoad() {

        super.viewDidLoad()

        var(city,temp)=json()

        cityname.text=toString(city)+"市"

        Temp.text=toString(temp)+"c"        

    }

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }

    func json()->(NSObject,NSObject)

  {

    var url=NSURL(string: "http://www.weather.com.cn/data/sk/101280601.html")

    var data=NSData(contentsOfURL: url)

    var json:AnyObject!=NSJSONSerialization.JSONObjectWithData(data, options:NSJSONReadingOptions.AllowFragments, error: nil)

    var weatherinfo:AnyObject=json.objectForKey("weatherinfo")

    var city:NSObject=weatherinfo.objectForKey("city") as NSObject

    var temp:NSObject=weatherinfo.objectForKey("temp") as NSObject

    return(city,temp)

    }

}