How can i convert this javascript data to ios compatible data and put it in a dictionary, when i do something like this newCustomer["cvc_check"] etc nothing comes up i get a nil, l am trying to get data from parse PFCloud.callFunctioninBackground which is calling a stripe.com api to get those results
func hasToken(token: STPToken!) {
var parameters = ["cardToken":token.tokenId,
"objectId":PFUser.currentUser().objectId]
PFCloud.callFunctionInBackground("createCustomer", withParameters:parameters) {
(results: AnyObject!, error: NSError!) -> Void in
if !error {
var newCustomer = results as Dictionary<String, AnyObject>
println(newCustomer["cvc_check"]) // This gives me a nil
self.successfulPayment()
} else {
let message = error.userInfo["error"] as NSString
self.hasError("\(message) Please try agains.")
}
}
I think the problem is with the line:
var newCustomer = results as Dictionary<String, AnyObject>
As you said in your comment, results is an Array, so this line should be:
var newCustomer = results as Array<Dictionary<String, AnyObject>>
Does that help?
Related
I have sounds stored for different events within the struct that the user will be able to change, and was hoping i could send the function a string to select a song for a specific event.
my function call would look like this:
func playSound(audio: Audio, soundSelect: String = "startSound"){
if let path = Bundle.main.path(forResource: audio.\(soundSelect), ofType: audio.soundType){
do {
audioPlayer = try! AVAudioPlayer(contentsOf: URL(fileURLWithPath: path))
audioPlayer?.play()
}catch{
print("ERROR: Could not find and play the sound file!")
}
and my struct would look something like this:
struct Audio {
var startSound: String = "happyMusic"
var endSound: String = "sadMusic"
var soundType: String = "mp3"
}
as above i tried string interpolation which didn't seem to work I got the error
"Expected member name following '.'
What I expected was for "audio.\(soundSelect)" to be read like "audio.startSound"
You cannot build variable names at runtime because all variable names are evaluated at compile time.
But if you define the type of the parameter as a KeyPath you are able to address different properties in the struct
func playSound(audio: Audio, soundSelect: KeyPath<Audio,String> = \.startSound) {
if let url = Bundle.main.url(forResource: audio[keyPath: soundSelect], withExtension: audio.soundType) {
do {
audioPlayer = try AVAudioPlayer(contentsOf: url)
audioPlayer?.play()
} catch {
print("ERROR: Could not find and play the sound file!", error)
}
}
}
Notes:
If you implement a do - catch block handle (removing the question mark in try?) and print the error rather than just a meaningless string literal.
Bundle provides an URL related API which avoids the extra URL(fileURLWithPath call
A still swiftier syntax is to make the function throw and hand over the error(s) to the caller
func playSound(audio: Audio, soundSelect: KeyPath<Audio,String> = \.startSound) throws {
if let url = Bundle.main.url(forResource: audio[keyPath: soundSelect], withExtension: audio.soundType) {
audioPlayer = try AVAudioPlayer(contentsOf: url)
audioPlayer?.play()
} else {
throw URLError(.badURL)
}
}
Im new to swift development and I can't make myself pass through this. I run my app and by pressing the "action" button I see no change on my text which should be the current temperature. And It's giving me an error "nw_protocol_get_quic_image_block_invoke dlopen libquic failed"
My code:
struct ContentView: View {
#State var temp = Int()
func CallApi(){
let url = URL(string: "https://api.openweathermap.org/data/2.5/weather?q=budapest&appid=#########################################")
URLSession.shared.dataTask(with: url!){data, response, error in
if let data = data {
if let DecodedData = try? JSONDecoder().decode(Api.self, from: data){
self.temp = DecodedData.main.temp
}
}
}.resume()
}
struct Api: Codable, Hashable{
var main: DataStructre
}
struct DataStructre: Codable, Hashable {
var temp: Int
}
var body: some View {
Text("\(temp)")
Button("Idojaras"){CallApi()}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
If you use do/try/catch instead of try?, you can get a useful error message.
do {
let DecodedData = try JSONDecoder().decode(Api.self, from: data)
self.temp = DecodedData.main.temp
} catch {
print(error)
}
In this case, I get:
Parsed JSON number <304.31> does not fit in Int.
Changing the type of temp (in both the #State variable and the DataStructre) fixes the issue.
In general, I'd recommend pasting your JSON into app.quicktype.io, which will give you generated models with the correct types/structures.
Slightly unrelated to your issue, but you may want to look into using dataTaskPublisher and Combine in SwiftUI rather than dataTask (https://developer.apple.com/documentation/foundation/urlsession/processing_url_session_data_task_results_with_combine). Also, function names in Swift are generally lowercased.
I need the response body when an error occurs in an RxAlamofire call. I've seen this hack but I wonder if there's a cleaner way.
Inspired by it, I created this RxAlamofire fork with a similar hack. With it, errors will usually be an instance of DataResponseError so you can do this:
RxAlamofire.data(method, url).subscribe(
onError: { error in
if let error = error as? DataResponseError<Data> {
// Get response body (in this case, convert it to a String)
if let data = error.response.data {
let message = String(data: data, encoding: String.Encoding.utf8)
print("Message: \(message)")
}
// Get status code
if let statusCode = error.response.response?.statusCode {
print("Status code: \(statusCode)")
}
}
}
)
Issue description. I'm using RxAlamofire to make network requests, and I needed to get information from the body of the error response.
I've made a hack in a folloing way:
Added a PError:
import UIKit
import Alamofire
import ObjectMapper
class PError: Error, Mappable {
var message: String?
var statusCode: Int?
required init?(map: Map) {
}
func mapping( map: Map) {
message <- map["error.message"]
statusCode <- map["error.statusCode"]
}
}
And now added such extensions to DataRequest:
import Alamofire
import ObjectMapper
extension DataRequest {
//Overriding several methods from Alamofire Validation
#discardableResult
public func validate<S: Sequence>(statusCode acceptableStatusCodes: S) -> Self where S.Iterator.Element == Int {
return validate { [unowned self] _, response, bodyData in
return self.validate(statusCode: acceptableStatusCodes, response: response, bodyData: bodyData)
}
}
//Overriding several methods from Alamofire Validataion
fileprivate func validate<S: Sequence>(
statusCode acceptableStatusCodes: S,
response: HTTPURLResponse, bodyData: Data?)
-> ValidationResult
where S.Iterator.Element == Int
{
if acceptableStatusCodes.contains(response.statusCode) {
return .success
} else {
var error: Error = AFError.responseValidationFailed(reason: AFError.ResponseValidationFailureReason.unacceptableStatusCode(code: response.statusCode))
if let bodyData = bodyData {
if let jsonString = String(data: bodyData, encoding: .utf8) {
if let errorNew = Mapper<PError>().map(JSONString: jsonString)
{
error = errorNew
}
}
}
return .failure(error)
}
}
}
Next, somewhere in the code you'll be able to work with this custom error object:
if let err = error as? PError {
status = err.message ?? "No message in the error description"
}
else
I am trying to add my data from my Json file into the application.I want append the Authors name from the Json file into the empty array.
I have added all of the areas that needed to be added when i run the simulation i get an empty array. I need it display the Authors first name on the simulator.
Does anyone know what i need to do to my code to make it work?
My Code :
var AuthorGlobal = [String]()
class ViewController: UIViewController, UITextFieldDelegate{
#IBOutlet weak var DisplayAuthor: UITextView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
DisplayAuthor.text="\(AuthorGlobal)"
}
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated);
Alamofire.request(.GET, "http://178.62.83.50/newsletters.json")
.responseJSON { response in
// print(response.request) // original URL request
// print(response.response) // URL response
// print(response.data) // server data
// print(response.result) // result of response serialization
if let _ = response.result.value {
// print("JSON: \(JSON)")
}
let json = JSON(data: response.data!)
if let Author = json["NewsLetter"][0]["Author"].string {
AuthorGlobal.append(Author)
}
if let LastName = json["NewsLetter"][0]["LastName"].string {
print(LastName)
}
if let ArticleTitle = json["NewsLetter"][0]["ArticleTitle"].string {
//Now you got your value
print(ArticleTitle)
}
if let Author = json["NewsLetter"][1]["Author"].string {
//Now you got your value
print(Author)
}
if let LastName = json["NewsLetter"][1]["LastName"].string {
//Now you got your value
print(LastName)
}
if let ArticleTitle = json["NewsLetter"][1]["ArticleTitle"].string {
//Now you got your value
print ("Article Title: " + (ArticleTitle))
}
}
}
I just tried by putting your json in my file system and loading it locally. Below is my code on Swift 2 and it all worked fine. You might want to check the JSON data coming correctly in your service call. Also, try to compare it line by line with my code to see if you missed out something. Its too late for me to call it a day so bear with me to not pointing out the exact root cause in your code!
var AuthorGlobal = [String]()
class ViewController: UIViewController, UITextFieldDelegate {
#IBOutlet weak var DisplayAuthor: UITextView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
// DisplayAuthor.text="\(AuthorGlobal)"
}
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated);
let filePath = NSBundle.mainBundle().pathForResource("1", ofType: "json")
var fileContents : String = ""
do {
fileContents = try String(contentsOfFile: filePath!, encoding: NSUTF8StringEncoding)
} catch (_) {
}
var json : Dictionary<String,Array<Dictionary<String,String>>> = Dictionary()
do {
json = try NSJSONSerialization.JSONObjectWithData(fileContents.dataUsingEncoding(NSUTF8StringEncoding)!, options:NSJSONReadingOptions.AllowFragments) as! Dictionary<String, Array<Dictionary<String, String>>>
} catch (_) {
}
let array = json["NewsLetter"] as Array?
if let author = array?[0]["Author"] {
AuthorGlobal.append(author)
}
print(AuthorGlobal) // This prints - ["Tom"]
if let LastName = array?[0]["LastName"] {
print(LastName) // This prints - Holton
}
if let ArticleTitle = array?[0]["ArticleTitle"] {
//Now you got your value
print(ArticleTitle) // This prints - XcodeGhost: Apple suffers a major malware infection inside the iOS app store.
}
if let Author = array?[1]["Author"] {
//Now you got your value
print(Author) // This prints - Sam
}
if let LastName = array?[1]["LastName"] {
//Now you got your value
print(LastName) // This prints - Devaney
}
if let ArticleTitle = array?[1]["ArticleTitle"] {
//Now you got your value
print ("Article Title: " + (ArticleTitle)) // This prints - Article Title: Google is 2 Billion Lines of Code
}
}
}
I'm combining Swift and Objective-C in the same project. I am trying to use STTwitter cocoapod like this:
// objective-c
// STTwitter category method
//
- (void)getStatusesLookupTweetIDs:(NSArray *)tweetIDs
successBlock:(void (^)(NSArray *))successBlock
errorBlock:(void (^)(NSError *))errorBlock {
[self getStatusesLookupTweetIDs:tweetIDs
includeEntities:#(YES)
trimUser:#(YES)
map:#(YES)
successBlock:successBlock
errorBlock:errorBlock];
}
Swift Code
// swift
twitterApi.getStatusesLookupTweetIDs(ids, successBlock: { (tweets: [AnyObject]!) -> Void in
process(tweets)
finish()
}, errorBlock: { (err) -> Void in
error(err)
})
Everything looks fine in Obj-C (I tried not investigate variable passed to successBlock, they all have valid values). But in Swift, when successBlock gets executed, tweets was:
Printing description of tweets:
([AnyObject]!) tweets = 1 value {
[0] = <error: use of undeclared identifier 'cocoarr'
error: 1 errors parsing expression
>
}
How do I fix this and pass NSArray into Swift? (No compile error)
That worked for me.
Instead of using:
[AnyObject]
try to use:
[Dictionary<String, AnyObject>] (or whatever class is inside the array)
Try to specify the type of the array instead AnyObject.
I hope it helps.
Cheers.
Try [[String:AnyObject]] rather than [AnyObject]
I got the same error in a smilar functionality. When changing from:
if let dictOrList = NSJSONSerialization.JSONObjectWithData(data, options:nil, error: &err) as? NSDictionary {
callbackList = [dictOrList]
} else if let list = NSJSONSerialization.JSONObjectWithData(data, options:nil, error: &err) as? [AnyObject] {
callbackList = list
}
to
if let dictOrList = NSJSONSerialization.JSONObjectWithData(data, options:nil, error: &err) as? [String: AnyObject] {
callbackList = [dictOrList]
} else if let list = NSJSONSerialization.JSONObjectWithData(data, options:nil, error: &err) as? [[String:AnyObject]] {
callbackList = list
}
I got it working.