swift - constructors - no puede subindicar un valor de tipo NSDictionary con un índice de tipo cadena

swift super

Question

 var url: NSURL = NSURL(string: urlPath)!
var request: NSMutableURLRequest = NSMutableURLRequest(URL: url)
request.setValue("Basic /(base64EncodedCredential)", forHTTPHeaderField: "Authorization")
request.HTTPMethod = "GET"
var dataVal: NSData = NSURLConnection.sendSynchronousRequest(request, returningResponse: nil, error:nil)!
var err: NSError
println(dataVal)
//var jsonResult : NSDictionary?
var jsonResult = NSJSONSerialization.JSONObjectWithData(dataVal, options: NSJSONReadingOptions.MutableContainers, error: nil) as? NSDictionary
println("Synchronous /(jsonResult)")
jsonResult["records"] 

Aquí es donde ocurre el error, solo quiero tomar un valor de mi jsonResult , que se imprime correctamente en la consola.

Answer 1

Está encasillando el jsonResult como NSDictionary , en su lugar use [String:AnyObject]

Si está utilizando NSDictionary , debe usar los valueForKey(key) u objectForKey(key) de NSDictionary para obtener el valor de la clave.

 var url: NSURL = NSURL(string: urlPath)!
var err: NSError?
var request: NSMutableURLRequest = NSMutableURLRequest(URL: url)
request.setValue("Basic /(base64EncodedCredential)", forHTTPHeaderField: "Authorization")
request.HTTPMethod = "GET"
var dataVal: NSData = NSURLConnection.sendSynchronousRequest(request, returningResponse: nil, error:nil)!
var err: NSError
println(dataVal)
//var jsonResult : NSDictionary?
var jsonResult:AnyObject? = NSJSONSerialization.JSONObjectWithData(dataVal, options: NSJSONReadingOptions.MutableLeaves, error: &err)
println("Synchronous /(jsonResult)")
if let result = jsonResult as? [String: AnyObject] {
if let oneValue = result["records"] as? String { //Here i am considering value for jsonResult["records"] as String, if it other than String, please change it.
println(oneValue)
}
}