对不起,我对此很陌生,而且他们可能是一个明显的东西,但是我收到了以下错误消息:
"致命错误:在打开可选值时意外发现nil。"
var jsonReceived = Alamofire.request(.GET, getJsonURL).responseJSON {
(request, response, jsonData, error) in
if jsonData == nil {
println(error)
} else {
println(jsonData)
var jsonResult: NSDictionary = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: nil) as NSDictionary
println(jsonResult)
}
}
答案 0 :(得分:4)
为简单起见,我已将Alamofire.request
代码放入viewDidLoad()
。你可以把它放在任何你想要的地方。
override func viewDidLoad() {
Alamofire.request(.GET, getJsonURL).responseJSON {
(request, response, jsonData, error) in
if error != nil {
println(error)
} else if let json = jsonData as? [String:AnyObject] {
println(json)
// call a function with the new data.
self.processNewData(json)
// or you could just use the json object here
if let str = json["foo"] as? String {
self.myButton.setTitle(str, forState: .Normal)
}
} else {
println("Failed to cast JSON to [String:AnyObject]")
}
}
}
func processNewData(json: [String:AnyObject]){
// do whatever you want here with the parsed JSON
if let str = json["bar"] as? String {
myLabel.text = str
}
}