swift实现天气预报应用weather-forecast app Using swift
最近楼主在swift的自学中痛并快乐着,这个最简单的天气预报功能遇到了好多小坑, 吐血记录下代码.
/ ViewController.swift // Weather // // Created by angela on 14/11/6. // Copyright (c) 2014年 angela. All rights reserved. // import UIKit class ViewController: UIViewController { @IBOutlet var tv:UITextView? @IBAction func btnPressed(sender:Anyobject){ println("button clicked") loadWeather() } override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view typically from a nib. loadWeather() } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } func loadWeather(){ var url = NSURL(string: "http://www.weather.com.cn/data/sk/101010100.html") println("\(url)") var data = NSData(contentsOfURL: url!) println("\(data)") var json : Anyobject? = NSJSONSerialization.JSONobjectWithData(data! options:NSJSONReadingOptions.AllowFragments error: nil) var weatherInfo : Anyobject! = json?.objectForKey("weatherinfo") var city : Anyobject! = weatherInfo?.objectForKey("city") var temp : Anyobject! = weatherInfo?.objectForKey("temp") var wind : Anyobject! = weatherInfo?.objectForKey("WD") var ws : Anyobject! = weatherInfo?.objectForKey("WS") tv?.text = "城市:\(city)\n温度: \(temp)\n风: \(wind)\n风级:\(ws)" } }
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