I am trying to translate Arabic to English using a web service. I get an error when constructing the URL. I've defined these cases:
enum MyErrors: Error {
case urlParsingError(String)
case nonDictonaryObjectReturned(Any)
}
And my code is:
func translateWord (text: String, ToLan:String) {
// the text is "مرحبا" and ToLan is "en"
do {
let jsonString = "https://translate.yandex.net/api/v1.5/tr.json/translate?key=apikey&text=\(text)&lang=\(ToLan)"
guard let url = URL(string: jsonString) else {
throw MyErrors.urlParsingError(jsonString)
}
let data = try Data(contentsOf: url, options: Data.ReadingOptions())
let jsonObject = try JSONSerialization.jsonObject(with: data,options: .allowFragments)
guard let dictionary = jsonObject as? [AnyHashable: Any] else {
throw MyErrors.nonDictonaryObjectReturned(jsonObject)
}
let result = dictionary["text"] as? [Any]
let translattedSTR = result?.first as? String
let encodedData = translattedSTR?.data(using: String.Encoding.utf8)!
print(encodedData!)
self.textresult.text = translattedSTR
} catch {
print("caught error \(error)")
}
but unfortunately, it prints
caught error urlParsingError(output url)
also, my the structure looks something like [this](https://translate.yandex.net/api/v1.5/tr.json/translate?key= apikey&text=مرحبا&lang=en)
You need to properly encode the values of the query parameters. One good solution is to use URLComponents to build your query.
Then these lines:
let jsonString = "https://translate.yandex.net/api/v1.5/tr.json/translate?key=myAPIkey&text=\(text)&lang=\(ToLan)"
guard let url = URL(string: jsonString) else {
throw MyErrors.urlParsingError(jsonString)
}
need to be replaced with:
let baseString = "https://translate.yandex.net/api/v1.5/tr.json/translate"
var comps = URLComponents(string: baseString)!
let keyQuery = URLQueryItem(name: "key", value: "myAPIKey")
let textQuery = URLQueryItem(name: "text", value: text)
let langQuery = URLQueryItem(name: "lang", value: ToLan)
comps.queryItems = [ keyQuery, textQuery, langQuery ]
guard let url = comps.url else {
throw MyErrors.urlParsingError("\(comps)")
}
The resulting url is now:
https://translate.yandex.net/api/v1.5/tr.json/translate?key=myAPIkey&text=%D9%85%D8%B1%D8%AD%D8%A8%D8%A7&lang=en
You have to encode your String to get a valid URL. You can do this by using String.addingPercentEncoding(withAllowedCharacters: ).
let jsonString = "https://translate.yandex.net/api/v1.5/tr.json/translate?key=trnsl.1.1.20170517T154730Z.927d87b76de60242.7a92e4612778a4838d40ab192df5297d2a1af4ed&text=\(text)&lang=\(ToLan)"
guard let encodedJsonString = jsonString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed), let url = URL(string: encodedJsonString) else {
throw MyErrors.urlParsingError(jsonString)
}
The encoded URL becomes:
https://translate.yandex.net/api/v1.5/tr.json/translate?key=trnsl.1.1.20170517T154730Z.927d87b76de60242.7a92e4612778a4838d40ab192df5297d2a1af4ed&text=%D9%85%D8%B1%D8%AD%D8%A8%D8%A7&lang=en
Related
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"
Im trying to figure out how to filter out the Dictionary of NSArrays by the value "name"
// Is an Array of a dictionary, by key : values
var teamFilteredList = [[String:Any]]()
var teamList = [[String:Any]]()
Fetch:
let string = "https://api/connect/"
let url = NSURL(string: string)
let request = NSMutableURLRequest(url: url! as URL)
request.httpMethod = "GET"
let session = URLSession.shared
let tache = session.dataTask(with: request as URLRequest) { (data, response, error) -> Void in
if let jsonObj = try? JSONSerialization.jsonObject(with: data!, options: .allowFragments) as! NSArray {
print(jsonObj)
teamList = jsonObj as! [[String : Any]]
DispatchQueue.main.async {
self.teamCollectionView.reloadData()
}
}
}
tache.resume()
This code is the result and gets put in teamList
JSON:
({
id = 1;
logo = "testLogo";
name = "testTeam1";
"url" = "https://example.com";
},
{
id = 2;
logo = "testLogo";
name = "testTeam2";
"url" = "https://example.com";
},
{
id = 3;
logo = "testLogo";
name = "testTeam3";
"url" = "https://example.com";
})
Example of what it looks like once put in teamList:
let example = [[id: "1", logo: "image", name: "testTeam1", url: "https"], [id: "2", logo: "image", name: "testTeam2", url: "https"]]
Code Trying to Filter:
let array2Name = teamFilteredList.flatMap { $0["name"] }
teamFilteredList = teamList.reduce(teamFilteredList, { result, value in
!array2Name.contains(where: { $0 as! _OptionalNilComparisonType == value["testTeam3"] }) ? result + [value]: result
})
So far this code has been horrible. But there's nothing else online that tells me how to do it cut dry. So I've been stuck.
leads to crash:
Could not cast value of type '__NSCFString'
Update:
I have a collection view that is populated from a fetch by a NSURL that gives me a Dictionary filled with NSArrays and i want to filter out all the NSArray indexes in that dictionary by a value that is already in the NSArray Indexes by the key: "name"
This answered Question in this link final answer, but its not up to date and yields errors.
here
It's so, so much easier with a custom struct and JSONDecoder
Create a struct
struct Team : Decodable {
let id : Int
let logo : String
let name : String
let url : URL
}
Create the arrays
var teamList = [Team]()
var teamFilteredList = [Team]()
Decode the JSON
let string = "https://api/connect/"
let url = URL(string: string)!
let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
if let error = error { print(error); return }
do {
self.teamList = try JSONDecoder().decode([Team].self, from: data!)
DispatchQueue.main.async {
self.teamCollectionView.reloadData()
}
} catch {
print(error)
}
}
task.resume()
And filter the array
teamFilteredList = teamList.filter{ $0.name == "testTeam3" }
Try to use this predicate
teamFilteredList.filter({ fromDict in return !array2Name.contains(where: { $0 == fromDict["name"] as? String ?? ""})})
The trick is that Swift isn't expressive in its errors. It says that don't use where, why? because the compiler really expects a String, because your closure is not correct.
And if the array2Name is a dictionary also. Try to change the where clause to:
where: { ($0["name"] as? String ?? "<<Empty1>>") == (fromDict["name"] as? String ?? "<<Empty2>>") }
So the whole function would be:
teamFilteredList.filter({ fromDict in return !array2Name.contains(where: { ($0["name"] as? String ?? "<<Empty1>>") == (fromDict["name"] as? String ?? "<<Empty2>>") })})
If you want to learn more effective functional programming and you don't mind some JavaScript, try this
Learn Effective Functional Programming in JavaScript)
I'm trying to get data from a URL. It was successful. I can download and convert to a dictionary[String : Any] but response is in nested loops. I don't to how to retrieve. Can someone suggest how to get text and value in the response?
func getDataFromUrl() {
let url = URL(string: "https://maps.googleapis.com/maps/api/distancematrix/json?units=imperial&departure_time=1408046331&origins=37.407585,-122.145287&destinations=37.482890,-122.150235")
let request = NSMutableURLRequest(url: url!)
let session = URLSession.shared
request.httpMethod = "GET"
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: {(data, response, error) in
do {
let jsonData = try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.mutableContainers) as? [String: Any]
let destinationAddress = jsonData!["destination_addresses"]
print("Destination address \(String(describing: destinationAddress!))")
let origin_addresses = jsonData!["origin_addresses"]
print("Origin_addresses \(String(describing: origin_addresses!))")
let rows = jsonData!["rows"]
print("Rows \(String(describing: rows!))")
// Here I want to print text and value.
} catch {
// handle error
}
})
dataTask.resume()
}
The above answers work, but in my opinion the more swiftier approach is to use Codable.
class MyResponseType:Codable {
let destination_addresses:String
let rows:[MyCustomRowData]
}
class MyCustomRowData:Codable {
let elements:[MyCustomElementsData]
}
class MyCustomElementsData:Codable {
// properties here
}
Doing this, parsing the json is done like this:
let response = try? JSONDecoder().decode(MyResponseType.self, from: data)
Where the data variable is just the retrieved Data object from the request.
Initially you have to set up some boilerplate code to replicate your expected data format, but working with it is really worth it (and it makes it highly testable).
When the decode succeeds you have a perfectly typed object, it can also have optionals. It just wont decode if fields are missing or of the wrong type (which is a good thing).
Here is the way you can parse text and Value from response:
do{
if let jsonData = try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.mutableContainers) as? [String: Any] {
if let destinationAddress = jsonData["destination_addresses"] as? [String] {
print(destinationAddress) //["1 Hacker Way, Menlo Park, CA 94025, USA"]
}
if let origin_addresses = jsonData["origin_addresses"] as? [String] {
print(origin_addresses) //["3251 Hillview Ave, Palo Alto, CA 94304, USA"]
}
if let rows = jsonData["rows"] as? [[String: AnyObject]] {
if rows.indices.contains(0) {
if let elements = rows[0]["elements"] as? [[String: AnyObject]] {
for element in elements {
if let duration = element["duration"] as? [String: AnyObject] {
let text = duration["text"] as? String ?? ""
print(text) //17 mins
let value = duration["value"] as? Int ?? 0
print(value) //1010
}
if let distance = element["distance"] as? [String: AnyObject] {
let text = distance["text"] as? String ?? ""
print(text) //7.2 mi
let value = distance["value"] as? Int ?? 0
print(value) //11555
}
}
}
}
}
}
}catch{ //error handle
}
Use this code:
let rows = jsonData["rows"] as! Array
let element = rows[0] as! Dictionary
let elementArray = element.value(forKey: "elements")
let distance = elementArray[0].value(forKey: "distance")
let text = distance.value(forKey: "text")
print(text)
let value = distance.value(forKey: "value")
print(value)
Thanks for the tremendous helps, I was able to get lat and lng by using Google geocoding API with swift. If anyone encounters some problems, hope this helps!
here is the code.
var components = URLComponents(string: "https://maps.googleapis.com/maps/api/geocode/json")!
let key = URLQueryItem(name: "key", value: "YOUR_KEY")
let address = URLQueryItem(name: "address", value: TOKYO)
components.queryItems = [key, address]
let task = URLSession.shared.dataTask(with: components.url!) { data, response, error in
guard let data = data, let httpResponse = response as? HTTPURLResponse, httpResponse.statusCode == 200, error == nil else {
print(String(describing: response))
print(String(describing: error))
return
}
guard let json = try! JSONSerialization.jsonObject(with: data) as? [String: Any] else {
print("not JSON format expected")
print(String(data: data, encoding: .utf8) ?? "Not string?!?")
return
}
guard let results = json["results"] as? [[String: Any]],
let geometry = results[0]["geometry"] as? [String:AnyObject],
let location = geometry["location"] as? [String:Double],
let lat = location["lat"],
let lng = location["lng"],
let status = json["status"] as? String,
status == "OK"
else{return}
Check this out:
var components = URLComponents(string: "https://maps.googleapis.com/maps/api/geocode/json")!
let key = URLQueryItem(name: "key", value: "AIzaSyCbFUri87RMHBX42AsOuxDQANeDCCK8LkA") // use your key
let address = URLQueryItem(name: "address", value: "Tokyo")
components.queryItems = [key, address]
let task = URLSession.shared.dataTask(with: components.url!) { data, response, error in
guard let data = data, let httpResponse = response as? HTTPURLResponse, httpResponse.statusCode == 200, error == nil else {
print(String(describing: response))
print(String(describing: error))
return
}
guard let json = try! JSONSerialization.jsonObject(with: data) as? [String: Any] else {
print("not JSON format expected")
print(String(data: data, encoding: .utf8) ?? "Not string?!?")
return
}
guard let results = json["results"] as? [[String: Any]],
let status = json["status"] as? String,
status == "OK" else {
print("no results")
print(String(describing: json))
return
}
}
task.resume()
Take a look at,
stringByAddingPercentEscapesUsingEncoding
for ios 8 and prior.
from ios 9,
stringByAddingPercentEncodingWithAllowedCharacters
Your code should be like,
let jsonUrl = "https://maps.googleapis.com/maps/api/geocode/json?address=Tokyo&key=Mykey"
let yourFinalString = jsonUrl.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)
guard URL(string:yourFinalString!) != nil else {
return print("error")
}
If your url string have some special characters then you have to escapes it by utf8 encoding!
For constructing URLs with query params I recommend to use URLComponents:
var constructor = URLComponents()
constructor.scheme = "https"
constructor.host = "maps.googleapis.com"
constructor.path = "/maps/api/geocode/json"
constructor.queryItems = [
URLQueryItem(name: "address", value: "Tokyo"),
URLQueryItem(name: "key", value: "MyKey")
]
constructor.url // https://maps.googleapis.com/maps/api/geocode/json?address=Tokyo&key=MyKey
or
var constructor = URLComponents(string: "https://maps.googleapis.com/maps/api/geocode/json")
constructor?.queryItems = [
URLQueryItem(name: "address", value: "Tokyo"),
URLQueryItem(name: "key", value: "MyKey")
]
constructor?.url // https://maps.googleapis.com/maps/api/geocode/json?address=Tokyo&key=MyKey
It will format and escape all the characters internally, using proper allowed characters list.
So i recently updated to Swift 3/XCode 8 and some of my code went hay-wire. I've read that some syntax changes have been made but I can't seem get this one right.
I make a request to Twitter and get JSON back:
func forLoadStats(completion: (AnyObject?, NSError?) -> Void)
{
var clientError: NSError?
let idString = api.getUserID()
let client = TWTRAPIClient()
let request = client.urlRequest(withMethod: "GET", url: "https://api.twitter.com/1.1/users/show.json", parameters: ["user_id" : 27446437], error: &clientError)
client.sendTwitterRequest(request)
{ (response, data, connectionError) in
if (connectionError == nil)
{
do {
if let json: Any = try? JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? [AnyObject]
{
if let json = json, let immage = json?["profile_image_url_https"] as? String
{
//Make ProfilePic edges round
self.profPic.layer.cornerRadius = 42
self.profPic.clipsToBounds = true
//let immage = image["profile_image_url_https"] as String
let _vImageUrl = immage.replacingOccurrences(of: "_normal", with: "")
let urlProfilePic = NSURL(string: _vImageUrl)
let urlPP = NSData(contentsOf: urlProfilePic! as URL)
self.profPic.image = UIImage(data: urlPP! as Data)
let ScrName = json["screen_name"] as! String
self.scrNameLabel.text = "#\(ScrName)"
//Populate Followers Label.text
let flwrVar = json["followers_count"] as! Int
self.followerLbl.text = "\(flwrVar)"
//Populate Following Label.text
let flwngVar = json["friends_count"] as! Int
self.followingLbl.text = "\(flwngVar)"
//Populate Bio
let bio = json["description"] as! String
self.bioLabel.text = "\(bio)"
//created at date
let accountAge = json["created_at"] as! String
self.createdLbl.text = "\(accountAge)"
let tweetCount = json["statuses_count"] as! Int
self.tweetCount.text = "\(tweetCount)"
let likes = json["favourites_count"] as! Int
self.likesCount.text = "\(likes)"
let lists = json["listed_count"] as! Int
self.listedCount.text = "\(lists)"
}
}
}
catch let error
{
print(error)
}
}
}
}
I get an error on the second "If let" statement that says: "initializer for conditional binding must have optional type not 'Any.
Can someone explain why this is?
Your JSON is obviously a dictionary, a JSON dictionary in Swift 3 is [String:Any]
You caused the error by the silly Any annotation (which is supposed to be Any? but is practically nonsensical) because it confuses the compiler.
If you use a do block, try without question mark but use optional binding:
...
if let json = try JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? [String:Any] {
if let immage = json["profile_image_url_https"] as? String { ...
There are a couple of problems with the syntax. [AnyObject] will not work to use reference items such as json["profile_image_url_https"]. also, you are redeclaring json through let json = json, which makes it a non option in your let immage = json?["profile_image_url_https"] call, so that becomes a problem. This structure does not have any compiler errors
if let json = try? JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? [String:Any]
{
if let json = json, let immage = json["profile_image_url_https"] as? String
{
}
}
This does not have any compiler errors.