Swift Question
Swift 2 - NSJSONSerialization.JSONObjectWithData Handling Error
I have a JSONParser, but unfortunately I couldn't adapt
NSJSONSerialization.JSONObjectWithData(data, options: nil, error: &error)
Extra argument 'error' in call
I found out that I can achieve this with do-try-catch, but I couldn't figure out how to adapt it in my case. Whatever I tried is just throwing another error.
class JSONParser {
let json: AnyObject?
var error: NSError?
init(data: NSData){ // ~this chunk~
self.json = NSJSONSerialization.JSONObjectWithData(data, options: nil, error: &error)
}
func array()->NSArray?{
if let jsonResponse: AnyObject = self.json{
return jsonResponse as? NSArray
}
return nil
}
func dictionary()->NSDictionary?{
if let jsonResponse: AnyObject = self.json{
return jsonResponse as? NSDictionary
}
return nil
}
}
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Answer Source
swift3
NSJSONSerialization and its methods are modified, according to the Swift Documents.
do {
let JsonDict = try JSONSerialization.jsonObject(with: data, options: [])
// you can now use t with the right type
if let dictFromJSON = JsonDict as? [String:String]
{
// use dictFromJSON
}
} catch let error as NSError {
print(error)
}
Swift2
init(data: NSData){ // ~this chunk~
do {
self.json = try NSJSONSerialization.JSONObjectWithData(data, options: []) as! [String:AnyObject]
} catch {
print("error: \(error)")
self.json = nil
}
}
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