Im trying to get html data from shoutoutStream , actually currently playing title...
I'm new at swift programming so i really need a help.
This is what i've tryied but still getting error:
ICY 404 Resource Not Found
icy-notice1:SHOUTcast Distributed Network Audio Server/Linux v1.9.8
icy-notice2:The resource requested was not found
let session = NSURLSession.sharedSession()
let request = NSURLRequest(URL: NSURL(string: "http://s5.voscast.com:8220/7.html")!)
let task = session.dataTaskWithRequest(request, completionHandler: {
(data, response, error) -> Void in
var usedEncoding = NSASCIIStringEncoding
print(usedEncoding)// Some fallback value
if let encodingName = response?.textEncodingName {
let encoding = CFStringConvertEncodingToNSStringEncoding(CFStringConvertIANACharSetNameToEncoding(encodingName))
if encoding != UInt(kCFStringEncodingInvalidId) {
usedEncoding = encoding
}
}
if let myString = String(data: data!, encoding: usedEncoding) {
print("this is my string: \(myString)")
} else {
print("failed to decode data")
}
})
task.resume()
Please help me , i'm sooo frustrated already.
Related
I am working on a project and my JSON file I am getting from the website does not have any (key) for me to start my parsing from. So, when I use the line in the code , let userInfo = swiftyJSON[].arrayValue I will get all the information from the JSON file. My problem is that I need to parse it further so I can fill a UITableView and I cant seem to parse it to be more specific.
This is the code from my JSON
let externalURL = "http://jsonplaceholder.typicode.com/users"
func getJSON(){
let url = URL(string: externalURL)
let request = NSURLRequest(url: url! as URL)
let session = URLSession(configuration:URLSessionConfiguration.default)
let task = session.dataTask(with: request as URLRequest) {(data, response, error) -> Void in
if error == nil {
let swiftyJSON = JSON(data: data!)
let userInfo = swiftyJSON[].arrayValue
print(userInfo)
}
else{
print("There was an error")
}
}
task.resume()
}
A starting point:
let swiftyJSON = JSON(data: data!)
if let userInfo = swiftyJSON.array {
for user in userInfo {
print(user["name"].string, user["email"].string, user["phone"].string)
if let address = user["address"].dictionary {
print(address["city"]?.string)
}
}
}
All printed values are optionals.
My application is using an NSURL like this:
var url = NSURL(string: "http://www.geonames.org/search.html?q=Aïn+Béïda+Algeria&country=")
When I tried to make a task for getting data from this NSURL like this:
let task = NSURLSession.sharedSession().dataTaskWithURL(url!, completionHandler: { (data: NSData!, response: NSURLResponse!, error: NSError!) -> Void in
if error == nil {
var urlContent = NSString(data: data, encoding: NSUTF8StringEncoding)
println("urlContent \(urlContent!)")
} else {
println("error mode")
}
but I got error when trying to got data from that address, although when I using safari go to link: "http://www.geonames.org/search.html?q=Aïn+Béïda+Algeria&country=" I can see the data. How can I fix that?
Swift 2
let original = "http://www.geonames.org/search.html?q=Aïn+Béïda+Algeria&country="
if let encodedString = original.stringByAddingPercentEncodingWithAllowedCharacters(
NSCharacterSet.URLFragmentAllowedCharacterSet()),
url = NSURL(string: encodedString)
{
print(url)
}
Encoded URL is now:
"http://www.geonames.org/search.html?q=A%C3%AFn+B%C3%A9%C3%AFda+Algeria&country="
and is compatible with NSURLSession.
Swift 3
let original = "http://www.geonames.org/search.html?q=Aïn+Béïda+Algeria&country="
if let encoded = original.addingPercentEncoding(withAllowedCharacters: .urlFragmentAllowed),
let url = URL(string: encoded)
{
print(url)
}
I'm following an iOS Swift guide on Udemy and this is the first issue I cannot work around:
I am supposed to see html etc printed to the console but instead I get null.
This is the section:
let url = NSURL(string: "https://google.com")
let task = NSURLSession.sharedSession().dataTaskWithURL(url!) {
(data, response, error) in
if error == nil {
var urlContent = NSString(data: data!, encoding: NSUTF8StringEncoding)
print(urlContent)
}
}
task.resume()
If I print just the data then it gives me some content back but when its encoded its nil.
Any help? Cannot move onto the next part until this is resolved.
The problem there as already mentioned by rmaddy it is the encoding you are using. You need to use NSASCIIStringEncoding.
if let url = URL(string: "https://www.google.com") {
URLSession.shared.dataTask(with: url) {
data, response, error in
guard
let httpURLResponse = response as? HTTPURLResponse, httpURLResponse.statusCode == 200,
let data = data, error == nil,
let urlContent = String(data: data, encoding: .ascii)
else { return }
print(urlContent)
}.resume()
}
Or taking a clue from Martin R you can detect the string encoding from the response:
extension String {
var textEncodingToStringEncoding: Encoding {
return Encoding(rawValue: CFStringConvertEncodingToNSStringEncoding(CFStringConvertIANACharSetNameToEncoding(self as CFString)))
}
}
if let url = URL(string: "https://www.google.com") {
URLSession.shared.dataTask(with: url) {
data, response, error in
guard
let httpURLResponse = response as? HTTPURLResponse, httpURLResponse.statusCode == 200,
let data = data, error == nil,
let textEncoding = response?.textEncodingName,
let urlContent = String(data: data, encoding: textEncoding.textEncodingToStringEncoding)
else { return }
print(urlContent)
}.resume()
}
I am trying to use a NSURLSession to pull some data from espn, but I can't seem to get it to work. It prints only nil.
I've tested this method with another page on their website and it worked, but I can't get it to work with the one in the code. Here is the code in question:
var url = NSURL(string: "http://espn.go.com/golf/leaderboard?tournamentId=2271")
if url != nil {
let task = NSURLSession.sharedSession().dataTaskWithURL(url!, completionHandler: { (data, response, error) -> Void in
print(data)
if error == nil {
var urlContent = NSString(data: data, encoding: NSUTF8StringEncoding) as NSString!
print(urlContent)
I've also tried changing the encoding type which didn't work either. The data it's printing looks like it's UTF 8 format, so I didn't think that would work but felt I should try.
I feel like I've run out of ideas to work.
Edit : Should have specified more, print(data) prints out what I expected, encoded data, but print(urlContent) prints nil.
Here's the full example that works
var url = NSURL(string: "http://espn.go.com/golf/leaderboard?tournamentId=2271")
if url != nil {
let task = NSURLSession.sharedSession().dataTaskWithURL(url!, completionHandler: { (data, response, error) -> Void in
print(data)
if error == nil {
var urlContent = NSString(data: data, encoding: NSASCIIStringEncoding) as NSString!
print(urlContent)
}
})
task.resume()
}
Looks like the right encoding here is NSASCIIStringEncodingnot NSUTF8StringEncoding.
This isn't the best way to go about this but the above answers do not work in swift 3 so I used this.
let url = NSURL(string: "http://espn.go.com/golf/leaderboard?tournamentId=2271")
if url != nil {
let task = URLSession.shared.dataTask(with: url! as URL, completionHandler: { (data, response, error) -> Void in
print(data as Any)
if error == nil {
let urlContent = NSString(data: data!, encoding: String.Encoding.ascii.rawValue) as NSString!
print(urlContent as Any)
}
})
task.resume()
}
It should works like this :
var url = NSURL(string: "http://espn.go.com/golf/leaderboard?tournamentId=2271")
if url != nil {
let task = NSURLSession.sharedSession().dataTaskWithURL(url!, completionHandler: { (data, response, error) -> Void in
print(data)
if error == nil {
var urlContent = NSString(data: NSData!, encoding: Uint)
print(urlContent)
}
})
task.resume()
}
I'm trying hard to learn IOS development.
I have followed this guide and successfully managed to create a working quiz game. The last couple of days I have been trying to connect the game to an external database. Finally after many hours I'm able to read from MYSQL using JSON parsing.
Right now Im struggling with a way to convert the json array into a normal array.
My current hardcoded questions look like this:
let questionOne = questionTemplate("the first question?", answerOne: "a answer", answerTwo: "a second answer", answerThree: "a third aswer", answerFour: "tast possible answer", correctAnswer: 2)
Then they are added to an array
spormslaArray = [questionOne, questionTwo, questionThree, questionFour, questionFive, questionSix,questionSeven]
Then im doing some more loading of answers and questions before i add them to the GUI based on an array counter from the first to the last question.
func questionTemplate(question:String, answerOne:String, answerTwo:String, answerThree:String, answerFour:String, correctAnswer:Int) -> NSArray {
//Set the question
var quizQuestion = question
//set the answers and the right answer
var firstAnswer = answerOne
var secondAnswer = answerTwo
var thirdAnswer = answerThree
var fourthAnswer = answerFour
var rightAnswer = correctAnswer
var gjennverendeSporsmal = 1
//Add all the questions and answers to an array
let questionAnswerArray = [question, firstAnswer, secondAnswer, thirdAnswer, fourthAnswer, rightAnswer]
return questionAnswerArray
}
I now want to add questions from my database into spormslaArray.I got questions loaded into xcode using this code:
func lasteJson(){
let urlPath = "http://universellutvikling.no/utvikling/json.php"
let url: NSURL = NSURL(string: urlPath)!
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithURL(url, completionHandler: {data, response, error -> Void in
if error != nil {
// If there is an error in the web request, print it to the console
println(error.localizedDescription)
}
var err: NSError?
var jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &err) as NSDictionary
if err != nil {
// If there is an error parsing JSON, print it to the console
println("JSON Error \(err!.localizedDescription)")
}
let json = JSON(jsonResult)
let count: Int? = json["data"].array?.count
// println("found \(count!) challenges")
//Im just setting a hardcoded number, it will be based on the array when I have figured that out
var tall = 7
let ct = count
for index in 0...tall-1 {
println(json["data"][index] )
//DEtte printer ut induviduelt
/*
if let questionId = json["data"][index]["id"].string {
println(questionId)
}
if let spm1 = json["data"][index]["answerOne"].string {
println(spm1)
}
if let spm2 = json["data"][index]["answerTwo"].string {
println(spm2)
}
if let spm3 = json["data"][index]["answerThree"].string {
println(spm3)
}
if let spm4 = json["data"][index]["answerFour"].string {
println(spm4)
}
if let correctAnswer = json["data"][index]["correctAnswer"].string {
println(correctAnswer)
}
*/
}
//}
})
task.resume()
This is mostly based on this code.
If Im ignoring the fact that Im getting some breakpoints when im running the app, and that nordic characters in my database makes the ios simulator crash; This is the parsing result in the command line:
{
"correctAnswer" : "1",
"id" : "0",
"answerThree" : "aa3",
"answerFour" : "aa4",
"questionTemplate" : "sporsmal",
"answerOne" : "as1",
"answerTwo" : "aa2"
}
//////Finally here is the problem///////
I have tried for hours to make a variable from the json array, into the guestion array.
I want to do something like this:
let questionOne = json["data"][index]["answerOne"].string
and then add them to an array
let questionArray[questionOne, QuestionTwo.. etc]
I have tried for hours without any progress, so my last hope is you guys! :-)
Use this...
To post JSON or to receive JSON (Leave dictionary nil to GET)
///Use completion handler to handle recieved data
func sendJSON(params:Dictionary<String, String>?, toAdressOnServer:String, customCompletionHandler:((parsedData:AnyObject?, statusCode: Int) -> Void)?){
var request = NSMutableURLRequest(URL: NSURL(string: SERVER_NAME + toAdressOnServer)!)
var session = NSURLSession.sharedSession()
var err: NSError?
if (params == nil){
request.HTTPMethod = "GET"
}else{
request.HTTPMethod = "POST"
request.HTTPBody = NSJSONSerialization.dataWithJSONObject(params!, options: nil, error: &err)
}
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
var task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
println("Response: \(response)")
var strData = NSString(data: data, encoding: NSUTF8StringEncoding)
println("Body: \(strData)")
var err: NSError?
var json: AnyObject? = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.AllowFragments , error: &err)
// Did the JSONObjectWithData constructor return an error? If so, log the error to the console
if(err != nil) {
println(err!.localizedDescription)
let jsonStr = NSString(data: data, encoding: NSUTF8StringEncoding)
println("Error could not parse JSON: '\(jsonStr)'")
customCompletionHandler?(parsedData: json, statusCode: -1)
}
else {
// The JSONObjectWithData constructor didn't return an error. But, we should still
// check and make sure that json has a value using optional binding.
if let parseJSON: AnyObject = json {
// Okay, the parsedJSON is here, let's get the value for 'success' out of it
// Use keyword "success" in JSON from server to register successful transmission
let success = parseJSON["success"] as? Int
if (success == nil){
customCompletionHandler?(parsedData: json, statusCode: -2)
}else{
customCompletionHandler?(parsedData: json, statusCode: success!)
}
}
else {
// The json object was nil, something went worng. Maybe the server isn't running?
let jsonStr = NSString(data: data, encoding: NSUTF8StringEncoding)
println("Error could not parse JSON: \(jsonStr)")
customCompletionHandler?(parsedData: json, statusCode: -1)
}
}
})
task.resume()
}
And To decode the JSON in your case the array, but it can have any form.
self.sendJSON(nil, toAdressOnServer: "ADRESS", customCompletionHandler: { (parsedData, statusCode) -> Void in
//check for valid data
if (parsedData != nil){
//Loop through results
for (var x = 0; x < parsedData!.count; x++){
///primary key of the item from the internet
let pk:Int = (parsedData![x] as NSDictionary).objectForKey("pk") as Int
let month = ((parsedData![x] as NSDictionary).objectForKey("fields") as NSDictionary).objectForKey("month")! as String
let quote = ((parsedData![x] as NSDictionary).objectForKey("fields") as NSDictionary).objectForKey("quote")! as String
let quotee = ((parsedData![x] as NSDictionary).objectForKey("fields") as NSDictionary).objectForKey("quotee")! as String
})
This is an example, use parsed data as "json" and use it with the appropriate structure. In this case the JSON was An array of some dictionary with a fields dictionary that has another dictionary with more fields. So you can have any JSON structure.
I Hope this helps!
It seems that you almost have the answer there. I think what you are missing is questionArray.append(... in your loop to build your array. You could also make things easier for yourself if you modified your JSON so that the questions were in an array rather than discrete keys and change your questionTemplate to take an array rather than discrete answers.
Working with what you have however -
func lasteJson(){
let urlPath = "http://universellutvikling.no/utvikling/json.php"
let url: NSURL = NSURL(string: urlPath)!
let session = NSURLSession.sharedSession()
questionsArray=[Question]()
let task = session.dataTaskWithURL(url, completionHandler: { (data, response, error) -> Void in
if error != nil {
// If there is an error in the web request, print it to the console
println(error.localizedDescription)
}
else {
var err: NSError?
var jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &err) as NSDictionary
if err != nil {
// If there is an error parsing JSON, print it to the console
println("JSON Error \(err!.localizedDescription)")
}
else {
let questions=jsonResult["data"] as? [[String:String]]
if (questions != nil) {
for question in questions! {
let answer1=question["answerOne"]!
let answer2=question["answerTwo"]!
let answer3=question["answerThree"]!
let answer4=question["answerFour"]!
let id=question["id"]!
let questionTemplate=question["questionTemplate"]!
let correctAnswer=question["correctAnswer"]!
let newQuestion=Question(questionTemplate, answerOne: answer1, answerTwo:answer2, answerThree: answer3, answerFour: answer4, correctAnswer: correctAnswer)
questionsArray.append(newQuestion)
}
}
}
}
})
task.resume()
}
You don't show your questionTemplate, but I am not sure why/how it returns an array. My code above assumes that there is a class Question and fills in a property questionsArray