iOS入门学习(json解析)

iOS入门学习(json解析)，有需要的朋友可以参考下。

1》首先获取数据，并把获取的json字符串转换为NSData类型

var url = NSURL(string: "") var data = NSData(contentsOfURL: url!)

2》然后将data转换为object类型

let json_b : AnyObject! = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers) as! NSDictionary

3》解析let info : AnyObject! = json_b.objectForKey("retData") self.city_name.text = info.objectForKey("city") as? String

在3步骤时，会提醒我们抛出异常

do{}catch{}

do{
var url = NSURL(string: "")
var data = NSData(contentsOfURL: url!)
let json_b : AnyObject! = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers) as! NSDictionary let info : AnyObject! = json_b.objectForKey("retData")
self.city_name.text = info.objectForKey("city") as? String
self.weather.text = info.objectForKey("weather") as? String
self.temp.text = (info.objectForKey("temp") as? String)! + "°"
self.date.text = info.objectForKey("date") as? String
self.time.text = info.objectForKey("time") as? String
self.h_temp.text = (info.objectForKey("h_tmp") as? String)! + "°"
self.l_temp.text = (info.objectForKey("l_tmp") as? String)! + "°"
self.wd.text = info.objectForKey("WD") as? String
self.ws.text = info.objectForKey("WS") as? String
self.sunrise.text = info.objectForKey("sunrise") as? String
self.sunset.text = info.objectForKey("sunset") as? String
print(info)
}catch{
print("no")
}

完成

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