How to work with nonjson data in swift3.0 - ios
I am facing some issue with non json data from the backed in swft3.0.
This is the Api I am using http://api.geonames.org/export/geonamesData.js?username=orakzai.
And the response is:
var geonamesPostalCodeCountries = ["AD","AR","AS","AT","AU","AX","BD","BE","BG","BR","BY","CA","CH","CO","CR","CZ","DE","DK","DO","DZ","ES","FI","FO","FR","GB","GF","GG","GL","GP","GT","GU","HR","HU","IE","IN","IS","IT","JE","JP","LI","LK","LT","LU","MC","MD","MK","MP","MQ","MT","MX","MY","NC","NL","NO","NZ","PH","PK","PL","PM","PR","PT","RE","RO","RU","SE","SI","SK","SM","TH","TR","US","VA","VI","WF","YT","ZA","GR"];
var geonamesUserIpCountryCode='null';
Please find the below code.
callApi(apiName: "http://api.geonames.org/export/geonamesData.js?username=orakzai")
func callApi(apiName :String) {
let reachability = Reachability()
if !(reachability?.isReachable)! {
showAlertView(message: " We are unable to reach servers. Please check your network/internet connection.")
} else {
let url = URL(string: "\(apiName)")
let session = URLSession.shared // or let session = URLSession(configuration: URLSessionConfiguration.default)
if let usableUrl = url {
let task = session.dataTask(with: usableUrl, completionHandler: { (data, response, error) in
print(response)
if let data = data {
if let stringData = String(data: data, encoding: String.Encoding.utf8) {
self.dataArray.append(stringData)
print(self.dataArray)
}
}
})
task.resume()
}
}
When I use this code I am getting below response
["var geonamesPostalCodeCountries = [\"AD\",\"AR\",\"AS\",\"AT\",\"AU\",\"AX\",\"BD\",\"BE\",\"BG\",\"BR\",\"BY\",\"CA\",\"CH\",\"CO\",\"CR\",\"CZ\",\"DE\",\"DK\",\"DO\",\"DZ\",\"ES\",\"FI\",\"FO\",\"FR\",\"GB\",\"GF\",\"GG\",\"GL\",\"GP\",\"GT\",\"GU\",\"HR\",\"HU\",\"IE\",\"IN\",\"IS\",\"IT\",\"JE\",\"JP\",\"LI\",\"LK\",\"LT\",\"LU\",\"MC\",\"MD\",\"MK\",\"MP\",\"MQ\",\"MT\",\"MX\",\"MY\",\"NC\",\"NL\",\"NO\",\"NZ\",\"PH\",\"PK\",\"PL\",\"PM\",\"PR\",\"PT\",\"RE\",\"RO\",\"RU\",\"SE\",\"SI\",\"SK\",\"SM\",\"TH\",\"TR\",\"US\",\"VA\",\"VI\",\"WF\",\"YT\",\"ZA\",\"GR\"];\nvar geonamesUserIpCountryCode=\'null\';\n"]
I want to var geonamesPostalCodeCountrie to tableview.
Assume you have the following string variable:
let response = "var geonamesPostalCodeCountries = [\"AD\",\"AR\",\"AS\",\"AT\",\"AU\",\"AX\",\"BD\",\"BE\",\"BG\",\"BR\",\"BY\",\"CA\",\"CH\",\"CO\",\"CR\",\"CZ\",\"DE\",\"DK\",\"DO\",\"DZ\",\"ES\",\"FI\",\"FO\",\"FR\",\"GB\",\"GF\",\"GG\",\"GL\",\"GP\",\"GT\",\"GU\",\"HR\",\"HU\",\"IE\",\"IN\",\"IS\",\"IT\",\"JE\",\"JP\",\"LI\",\"LK\",\"LT\",\"LU\",\"MC\",\"MD\",\"MK\",\"MP\",\"MQ\",\"MT\",\"MX\",\"MY\",\"NC\",\"NL\",\"NO\",\"NZ\",\"PH\",\"PK\",\"PL\",\"PM\",\"PR\",\"PT\",\"RE\",\"RO\",\"RU\",\"SE\",\"SI\",\"SK\",\"SM\",\"TH\",\"TR\",\"US\",\"VA\",\"VI\",\"WF\",\"YT\",\"ZA\",\"GR\"];\nvar geonamesUserIpCountryCode=\'null\';\n"
Since in Swift you cannot simply evaluate the response string like in JavaScript, using eval(response); (which would have created dynamic variables matching the ones declared in the string), how about this:
let vars = response.components(separatedBy: "\n")
var geonamesPostalCodeCountriesStr = vars[0].components(separatedBy: "=")[1].trimmingCharacters(in: CharacterSet(charactersIn: " [];")).replacingOccurrences(of: "\"", with: "")
var geonamesPostalCodeCountries: [String] = geonamesPostalCodeCountriesStr.components(separatedBy: ",")
var geonamesUserIpCountryCodeStr = vars[1].components(separatedBy: "=")[1].trimmingCharacters(in: CharacterSet(charactersIn: " [];")).replacingOccurrences(of: "\'", with: "")
var geonamesUserIpCountryCode: String? = (geonamesUserIpCountryCodeStr == "null") ? nil : geonamesUserIpCountryCodeStr
Related
iOS - Swift : fetching data from database in main thread, not in background
In my iOS App i'm able to download data from a database, but actually all the operations are made in background and the main thread is still active, even the GUI. I also tried to make a 'sleep' with
DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(3)) { ... }
With this delay everthing works fine, but it's not a good solution. How can i change my code to do this in the main thread? Possibly with loadingIndicator.
This is my code (checking if username exists):
func CheckIfUsernameExists(username : String, passwordFromDb : inout String, errorMsg : inout String)
{
//declare parameter as a dictionary which contains string as key and value combination. considering inputs are valid
var _errorMsg = ""
var _psw = ""
var parameters : [String : Any]?
parameters = ["username": username,
"action": "login"]
print(parameters!)
let session = URLSession.shared
let url = "http://www.thetestiosapp.com/LoginFunctions.php"
let request = NSMutableURLRequest()
request.url = URL(string: url)!
request.httpMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.setValue("application/json", forHTTPHeaderField:"Accept")
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField:"Content-Type")
do{
request.httpBody = try JSONSerialization.data(withJSONObject: parameters!, options: .sortedKeys)
let task = session.dataTask(with: request as URLRequest, completionHandler: {(data, response, error) in
if let response = response {
let nsHTTPResponse = response as! HTTPURLResponse
let statusCode = nsHTTPResponse.statusCode
print ("status code = \(statusCode)")
}
if let error = error {
print ("\(error)")
}
if let data = data {
do{
_psw = self.parseJSON_CheckIfUsernameExists(data, errorMsg: &_errorMsg)
}
}
})
task.resume()
}catch _ {
print ("Oops something happened buddy")
errorMsg = "Usarname non recuperato (1)"
}
passwordFromDb = _psw
errorMsg = _errorMsg
}
You’re attempting to update passwordFromDb and errorMsg at the end of this method. But this is an asynchronous method and and those local variables _psw and _errorMsg are set inside the closure. Rather than trying to defer the checking of those variables some arbitrary three seconds in the future, move whatever “post request” processing you need inside that closure. E.g.
func CheckIfUsernameExists(username : String, passwordFromDb : inout String, errorMsg : inout String) {
//declare parameter as a dictionary which contains string as key and value combination. considering inputs are valid
let parameters = ...
let session = URLSession.shared
var request = URLRequest()
...
do {
request.httpBody = ...
let task = session.dataTask(with: request) { data, response, error in
if let httpResponse = response as? HTTPURLResponse,
let statusCode = httpResponse.statusCode {
print ("status code = \(statusCode)")
}
guard let data = data else {
print (error ?? "Unknown error")
return
}
let password = self.parseJSON_CheckIfUsernameExists(data, errorMsg: &_errorMsg)
DispatchQueue.main.async {
// USE YOUR PASSWORD AND ERROR MESSAGE HERE, E.G.:
self.passwordFromDb = password
self.errorMsg = _errorMsg
// INITIATE WHATEVER UI UPDATE YOU WANT HERE
}
}
task.resume()
} catch _ {
print ("Oops something happened buddy")
errorMsg = "Usarname non recuperato (1)"
}
}
Programming not sending verification code to given phone number
I am trying to figure out how to send a verification code to a user when signing up to verify their number. I am trying to follow online resources (code below), but it doesn't seem to work. When I put in a phone number as an 'xxxyyyzzzz' or 'xxx-yyy-zzzz' number (with a country code formatted just as the number, no '+') I get an error in my console that the phone number is not properly formatted. I'm not sure if this is the source of my issue, but as of now it seems the most probable. What confuses me about this is that online I am told that either of these formats will work. Any help? Code:
static let path = Bundle.main.path(forResource: "Config", ofType: "plist")
static let config = NSDictionary(contentsOfFile: path!)
private static let baseURLString = config!["serverUrl"] as! String
#IBOutlet var countryCodeField: UITextField! = UITextField()
#IBOutlet var phoneNumberField: UITextField! = UITextField()
#IBAction func sendVerification(_ sender: Any) {
if let phoneNumber = phoneNumberField.text,
let countryCode = countryCodeField.text {
SignUp2ViewController.sendVerificationCode(countryCode, phoneNumber)
}
}
static func sendVerificationCode(_ countryCode: String, _ phoneNumber: String) {
let parameters = [
"via": "sms",
"country_code": countryCode,
"phone_number": phoneNumber
]
let path = "start"
let method = "POST"
let urlPath = "\(baseURLString)/\(path)"
var components = URLComponents(string: urlPath)!
var queryItems = [URLQueryItem]()
for (key, value) in parameters {
let item = URLQueryItem(name: key, value: value)
queryItems.append(item)
}
components.queryItems = queryItems
let url = components.url!
var request = URLRequest(url: url)
request.httpMethod = method
let session: URLSession = {
let config = URLSessionConfiguration.default
return URLSession(configuration: config)
}()
let task = session.dataTask(with: request) {
(data, response, error) in
if let data = data {
do {
let jsonSerialized = try JSONSerialization.jsonObject(with: data, options: []) as? [String : Any]
print(jsonSerialized!)
} catch let error as NSError {
print(error.localizedDescription)
}
} else if let error = error {
print(error.localizedDescription)
}
}
task.resume()
}
You are calling a POST but passing the values into the URL as if it's a GET. You should use the httpBody for POST.
How to append Special character in iOS using swift?
I am new to iOS please consider.I want to post some data to server, but I am not able to send Mobile number +91 and bloodGroup A+..it was sending to firebase + is replace with space " " like this ( 91) and (A )
func addEmployees(){
let photoUrl = "https://firebasestorage.googleapis.com/v0/b/pickcel-1241.appspot.com/o/task.careGallery%2FGroup%2018aasa.png?alt=media&token=4e0ac8f6-134a-4807-9fef-f44eabe9f6a8";
let userID = Auth.auth().currentUser!.uid
let mobilenumber = Auth.auth().currentUser?.phoneNumber
var employeeDetails = [String : AnyObject]()
employeeDetails["OID"] = getOID() as AnyObject
employeeDetails["MID"] = userID as AnyObject
employeeDetails["email"] = "ssinth#gmail.com" as AnyObject
employeeDetails["firstName"] = "First Name" as AnyObject
employeeDetails["lastName"] = "last name" as AnyObject
employeeDetails["isManager"] = "true" as AnyObject
employeeDetails["regMedia"] = "mobile" as AnyObject
employeeDetails["shortDestination"] = "btm" as AnyObject
employeeDetails["address"] = "+btm" as AnyObject
employeeDetails["createdDate"] = getdateformat() as AnyObject
employeeDetails["orgName"] = "Test Org" as AnyObject
employeeDetails["photoUrl"] = photoUrl as AnyObject
employeeDetails["officeOpenTime"] = "09:00" as AnyObject
employeeDetails["officeCloseTime"] = "18:00" as AnyObject
employeeDetails["phoneNumber"] = labelmobile.text as AnyObject
employeeDetails["bloodGroup"] = "A+" as AnyObject
employeeDetails["empId"] = "abcd" as AnyObject
let convertedvalue : String = convertToParameters(employeeDetails)
print("convertedvalues : \(convertedvalue)")
let myUrl = URL(string: "https://us-central1-pickceltest.cloudfunctions.net/rebliss/createNewUser");
var request = URLRequest(url:myUrl!)
request.httpMethod = "POST"// Compose a query string
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
let postString = convertedvalue;
print("start create employee")
request.httpBody = postString.data(using: String.Encoding.utf8);
let task = URLSession.shared.dataTask(with: request) { (data: Data?, response: URLResponse?, error: Error?) in
if error != nil
{
print("error=\(String(describing: error))")
return
}
print("start create employee =successfull")
print("response = \(String(describing: response))")
do {
print("start create employee =parsing problems ")
let json = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as? NSDictionary
if let parseJSON = json {
// print("resultjson=one : ",self.json)
print("resultjson=two : ",parseJSON)
}
} catch {
print(error)
}
}
task.resume()
}
function convertToParameters
func convertToParameters(_ params: [String: AnyObject?]) -> String {
var paramList: [String] = []
for (key, value) in params {
guard let value = value else {
continue
}
let scapedKey = key
let scapedValue = value
print("employee add status objects = ","\(scapedKey)=\(scapedValue as AnyObject)")
paramList.append("\(scapedKey)=\(scapedValue as AnyObject)")
}
return paramList.joined(separator: "&")
}
Json Error:
resultjson=two : {
error = {
code = "auth/invalid-phone-number";
message = "The phone number must be a non-empty E.164 standard compliant identifier string.";
};
success = 0;
}
Error in firebase console:
Actual issue with you is your parameters not getting properly url encoded.
Temporary Solution for your code:
In your convertToParams method, make following changes:
let scapedKeyEncoded = scapedKey.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed);
let scapedValueEncoded = scapedValue.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed);
paramList.append("\(scapedKeyEncoded)=\(scapedValueEncoded)"
Note: Your scapedValue must be String, so, make employeeDetails as [String:String].
Permanent Solution(Perfect way for encoding query parameters):
For this, you can change your code to something like this:
Remove convertToParameters method
Add following method in place of it
class func getURLRequestWith(urlStr:String, paramsDict:[String:String]?, isParamsAsQuery:Bool, isParamsAsBody:Bool) -> URLRequest? {
guard var components = URLComponents(string: urlStr) else { return nil }
if paramsDict != nil{
components.queryItems = paramsDict!.map({ (key, value) -> URLQueryItem in
return URLQueryItem(name: key, value: value)
})
}
if isParamsAsQuery{
let request = URLRequest(url: components.url!);
return request;
}
if isParamsAsBody{
let url = URL(string: urlStr);
var request = URLRequest(url: url!);
let bodyStr = components.percentEncodedQuery;
if bodyStr != nil{
request.httpBody = bodyStr!.data(using: String.Encoding.utf8);
}
return request;
}
let url = URL(string: urlStr);
let request = URLRequest(url: url!);
return request;
}
Remove below lines from your code:
let convertedvalue : String = convertToParameters(employeeDetails)
print("convertedvalues : \(convertedvalue)")
let myUrl = URL(string: "https://us-central1-pickceltest.cloudfunctions.net/rebliss/createNewUser");
var request = URLRequest(url:myUrl!)
request.httpBody = postString.data(using: String.Encoding.utf8);
Add following code instead of above removed code
let urlStr = "https://us-central1-pickceltest.cloudfunctions.net/rebliss/createNewUser"
var request = getURLRequestWith(urlStr: urlStr, paramsDict: employeeDetails, isParamsAsQuery: false, isParamsAsBody: true)
convert employeeDetails dictionary to type [String:String] instead of [String:AnyObject]
Now, try your code and it will surely work.
Please check if below solution works. Add percent encoding to you url. // Create NSURL Ibject let url : NSString = urlWithParams as NSString let urlStr = url.addingPercentEncoding( withAllowedCharacters: .urlQueryAllowed) let searchURL : NSURL = NSURL(string: urlStr! as String)! // Creaste URL Request let request = NSMutableURLRequest(url: searchURL as URL, cachePolicy: NSURLRequest.CachePolicy.reloadIgnoringCacheData, timeoutInterval: 120) // Set request HTTP method to GET. It could be POST as well request.httpMethod = "POST"
swift Unescaped control character
I'm trying to get a json from a server and deserialize it, but I try probelas with unescaped control characters.
My code is as follows ...
let urlFinal = "http://000.0000.000.000:8080"
let jsonUrl = urlFinal
let session = NSURLSession.sharedSession()
let shotsUrl = NSURL(string: jsonUrl)
let task = session.dataTaskWithURL(shotsUrl!) {data, response, error in
guard data != nil else {
falha()
return
}
//let json = JSON(data: data!)
//print(json["ServicoCliente"][0]["id"])
do {
let jsonData = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers )
let J = jsonData as! NSDictionary
print(jsonData)
let us = J["ServicoCliente"]
print(us)
dispatch_async(dispatch_get_main_queue(),{
sucesso()
});
} catch _ {
falha()
}
}
task.resume()
and I also tried this using Alamofire 3.0:
Alamofire.request(.GET, "http://000.000.000.000/", parameters: nil)
.responseJSON { response in
debugPrint(response) // prints detailed description of all response properties
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 JSON = response.result.value {
print("JSON: \(JSON)")
}
}
And get this error:
Unescaped control character around character 263
How can I remove characters without escape?
I use X-Code 7.3.1 and Swift 2.3
UPDATE:
Json
{"ServicoCliente":[{"id":"195","cliente":"247","enderecoFavoritos":"48","servicoProfissional":"194","ind_estado_cliente":"A","ind_estado_profissional":"","profissional_id":"240","profissional_nome":"PetMax","servicotipo_nome":"Petshop","servicosubtipo_nome":"Tosa ","dta_inc_alt":"2016-11-05 22:56:19.333","ind_finalizado":"N"}]}
To fix this, you must convert the data for string, remove characters and then convert to dataonly then deserialize
let urlFinal = "http://000.0000.000.000:8080"
let jsonUrl = urlFinal
let session = NSURLSession.sharedSession()
let shotsUrl = NSURL(string: jsonUrl)
let task = session.dataTaskWithURL(shotsUrl!) {data, response, error in
guard data != nil else {
falha()
return
}
var dataToString = String(data: data!, encoding: NSUTF8StringEncoding)
dataToString = stringByRemovingControlCharacters2(dataToString!)
let ndata = dataToString!.dataUsingEncoding(NSUTF8StringEncoding)
do {
let jsonData = try NSJSONSerialization.JSONObjectWithData(ndata!, options: NSJSONReadingOptions.MutableContainers )
let J = jsonData as! NSDictionary
print(jsonData)
let us = J["ServicoCliente"]
print(us)
dispatch_async(dispatch_get_main_queue(),{
sucesso()
});
} catch _ {
falha()
}
}
task.resume()
and add the function
func stringByRemovingControlCharacters2(string: String) -> String {
let controlChars = NSCharacterSet.controlCharacterSet()
var range = string.rangeOfCharacterFromSet(controlChars)
var mutable = string
while let removeRange = range {
mutable.removeRange(removeRange)
range = mutable.rangeOfCharacterFromSet(controlChars)
}
return mutable
}
Swift 5
func string(byRemovingControlCharacters inputString: String) -> String {
let controlChars = CharacterSet.controlCharacters
var range = (inputString as NSString).rangeOfCharacter(from: controlChars)
if range.location != NSNotFound {
var mutable = inputString
while range.location != NSNotFound {
if let subRange = Range<String.Index>(range, in: mutable) { mutable.removeSubrange(subRange) }
range = (mutable as NSString).rangeOfCharacter(from: controlChars)
}
return mutable
}
return inputString
}
How to escape the HTTP params in Swift
I'm trying to make a post to an HTTP server
By the way this is my code:
func sendPostToUrl(url:String, withParams params: [String: String?] ) {
var request = NSMutableURLRequest(URL: NSURL(string: url)!)
var session = NSURLSession.sharedSession()
request.HTTPMethod = "POST"
var err: NSError?
var bodyData = ""
for (key,value) in params{
if (value==nil){ continue }
let scapedKey = key.stringByAddingPercentEncodingWithAllowedCharacters(
.URLHostAllowedCharacterSet())!
let scapedValue = value!.stringByAddingPercentEncodingWithAllowedCharacters(
.URLHostAllowedCharacterSet())!
bodyData += "\(scapedKey)=\(scapedValue)&"
}
request.HTTPBody = bodyData.dataUsingEncoding
(NSUTF8StringEncoding, allowLossyConversion: true)
var task = session.dataTaskWithRequest(request,
completionHandler: {data, response, error -> Void in
println("Response: \(response)")
let dataString = NSString(data: data, encoding: NSUTF8StringEncoding)
println("Data: \(dataString)")
})
task.resume()
}
It works but is not perfect. If I call the function this way:
client.sendPostToUrl("http://novagecko.com/tests/test.php",
withParams: ["hello":"world","inject":"param1=value1¶m2=value2"]);
The server detects 3 post fields (with keys hello,inject and param2) instead of 2.
How can I escape the key and values?
Is there something more I could do for improving the method?
If you can target iOS 8 (thanks #Rob), use NSURLComponents to escape your parameters instead:
import Foundation
func encodeParameters(#params: [String: String]) -> String {
var queryItems = map(params) { NSURLQueryItem(name:$0, value:$1)}
var components = NSURLComponents()
components.queryItems = queryItems
return components.percentEncodedQuery ?? ""
}
Now encodeParameters(params:["hello":"world","inject":"param1=value1¶m2=value2"]) returns hello=world&inject=param1%3Dvalue1%26param2%3Dvalue2 as you would expect.
Otherwise, the best way to create the character set that will let you escape your values properly is this:
var safeCharacterSet = NSCharacterSet.URLQueryAllowedCharacterSet().mutableCopy()
safeCharacterSet.removeCharactersInString("&=")
and see #rintaro's answer to use filter/map properly to perform the encoding in a nice way.
It seems, NSCharacterSet doesn't have relevant set for that.
So, add this
extension NSCharacterSet {
class func URLUnreservedCharacterSet() -> NSCharacterSet {
return self(charactersInString: "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_.~")
}
}
Then
var bodyData = ""
var safeCharacterSet = NSCharacterSet.URLUnreservedCharacterSet()
for (key,value) in params{
if (value==nil){ continue }
let scapedKey = key.stringByAddingPercentEncodingWithAllowedCharacters(safeCharacterSet)!
let scapedValue = value!.stringByAddingPercentEncodingWithAllowedCharacters(safeCharacterSet)!
bodyData += "\(scapedKey)=\(scapedValue)&"
}
As following #Rob's advice in comment, here is a map and join example:
let params:[String:String?] = ["fubar":nil, "hello":"world", "inject":"param1=value1¶m2=value2"]
let safeCharacterSet = NSCharacterSet.URLUnreservedCharacterSet()
let pairs = filter(params, {$1 != nil}).map { (key, value) -> String in
let _key = key.stringByAddingPercentEncodingWithAllowedCharacters(safeCharacterSet)!
let _val = value!.stringByAddingPercentEncodingWithAllowedCharacters(safeCharacterSet)!
return _key + "=" + _val
}
let bodyData = "&".join(pairs)
This is better because there is no trailing & in the result.