Can anyone help me with this API code. I got everything but one error fixed.
Here is my code:
let APIUrl = NSURL(string:"https://api.openweathermap.org/data/2.5/weather? lat=35&lon=150&appid=e7b2054dc37b1f464d912c00dd309595&units=Metric")
var request = URLRequest(url:APIUrl! as URL)
let task = URLSession.shared.dataTask(with: request as URLRequest)
guard let data = Data else {return}
let decoder = JSONDecoder()
let weatherData = try decoder.decode(MyWeather, from: data)
let ggtemp = weatherData.main?.temp
print(ggtemp, "THIS IS THE TEMP")
DispatchQueue.main.async {
tempDisplay.text = String (ggtemp) + " c"
}
}
Image of error
Once I fix the "let data = data" error, I get an error on the "let task = URLSesss..."
Any help would be appreciated. Thanks in advance.
Try this code
let APIUrl = NSURL(string:"https://api.openweathermap.org/data/2.5/weather?lat=35&lon=150&appid=e7b2054dc37b1f464d912c00dd309595&units=Metric")
var request = URLRequest(url:APIUrl! as URL)
request.httpMethod = "GET"
let dataTask = URLSession.shared.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
if (error != nil) {
print(error ?? "Error is empty.")
} else {
let httpResponse = response as? HTTPURLResponse
print(httpResponse ?? "HTTP response is empty.")
}
guard let responseData = data else {
print("Error: did not receive data")
return
}
do {
let weatherData = try JSONDecoder().decode(MyWeather.self, from: responseData)
let ggtemp = weatherData.main?.temp
print(ggtemp, "THIS IS THE TEMP")
DispatchQueue.main.async {
tempDisplay.text = String (ggtemp) + " c"
}
} catch {
print("error parsing response from POST on /todos")
return
}
})
dataTask.resume()
Related
I'm trying to get results from an API, and I'm having trouble running the request itself.
Here is the code I currently have:
let url = URL(string: "https://httpbin.org/get")!
let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
if let error = error {
print("error: \(error)")
} else {
if let response = response as? HTTPURLResponse {
print("statusCode: \(response.statusCode)")
}
if let data = data, let dataString = String(data: data, encoding: .utf8) {
print("data: \(dataString)")
}
}
}
task.resume()
However, it doesn't seem to run anything inside the code block in dataTask.
Thanks for your help :)
Your code works well. It seems like you're just calling the function incorrectly...try it this way:
1:
func request() {
let url = URL(string: "https://httpbin.org/get")!
let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
if let error = error {
print("error: \(error)")
} else {
if let response = response as? HTTPURLResponse {
print("statusCode: \(response.statusCode)")
}
if let data = data, let dataString = String(data: data, encoding: .utf8) {
print("data: \(dataString)")
}
}
}
task.resume()
}
2:
override func viewDidLoad() {
super.viewDidLoad()
request()
}
I'm trying to figure out how to store JSON data into a variable for later use. How do I store it, and is it possible to use the variable in another view controller, or do I have to do another request to fetch the data?
This is my code:
#IBAction func signinTapped(_ sender: UIButton) {
guard let url = URL(string: "http://XXXXXX/TestReqIOS.php") else {
return
}
let email = txtEmail.text!
let password = txtPassword.text!
let data : Data = "loginSubmit=1&email=\(email)&password=\(password)&grant_type=password".data(using: .utf8)!
var request : URLRequest = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField:"Content-Type");
request.setValue(NSLocalizedString("lang", comment: ""), forHTTPHeaderField:"Accept-Language");
request.httpBody = data
print("Calling API")
let config = URLSessionConfiguration.default
let session = URLSession(configuration: config)
// vs let session = URLSession.shared
// make the request
let task = session.dataTask(with: request, completionHandler: {
(data, response, error) in
if let error = error {
print("error")
}
else if let response = response {
print("response")
}
else if let data = data {
print(data)
}
DispatchQueue.main.async { // Correct
guard let responseData = data else {
print("Error: did not receive data")
return
}
print(String(data: responseData, encoding: String.Encoding.utf8) ?? "")
}
})
task.resume()
}
Which will return:
{
"id": "7",
"first_name": "John",
"last_name": "Doe",
"email": "JohnDoe#text.com",
"created": "2019-03-11",
"modified": "2019-03-10",
}
It would be better to use a struct, such as in your case:
struct Data: Codable {
let id: Int
let first_name: String
let last_name: String
let email: String
let created: Date
let modified: Date
}
Then you create a variable of that struct where you will store it:
var dataVariable = [Data]()
Then you can do your URL call like:
func getData(arr: Bool, completion: #escaping (Bool) -> ()) {
let urlJSON = "URL"
guard let url = URL(string: urlJSON) else { return }
URLSession.shared.dataTask(with: url) { (data, response, err) in
guard let data = data else { return }
do {
let getData = try JSONDecoder().decode([Data].self, from: data)
self.dataVariable = getData
} catch let jsonErr {
print("error serializing json: \(jsonErr)")
}
completion(arr)
}.resume()
}
Then you can access all of this from the dataVariable var. IF you do this in a Manager class you can access it from any ViewController.
To access:
let firstNameString = dataVariable[0].first_name
If there are not multiple trees of the same, then just make sure its:
let getData = try JSONDecoder().decode(Data.self, from: data)
Edit:
In your case put the above here:
let task = session.dataTask(with: request, completionHandler: {
(data, response, error) in
if let error = error {
print("error")
}
else if let response = response {
print("response")
}
else if let data = data {
let getData = try JSONDecoder().decode([Data].self, from: data)
self.dataVariable = getData // <- Just decode here
print(data)
}
DispatchQueue.main.async { // Correct
guard let responseData = data else {
print("Error: did not receive data")
return
}
print(String(data: responseData, encoding: String.Encoding.utf8) ?? "")
}
})
task.resume()
I have some issues with receipt validation. I want to purchased subscription expires date on show some places but do not get receipt data info.
do {
guard let receipt = Bundle.main.getReceiptData()?.base64EncodedString() else { return }
let requestDictionary = ["receipt-data": receipt]
guard JSONSerialization.isValidJSONObject(requestDictionary) else {
print("requestDictionary is not valid JSON")
return
}
let requestData = try JSONSerialization.data(withJSONObject: requestDictionary)
let validationURLString = "https://sandbox.itunes.apple.com/verifyReceipt"
guard let validationURL = URL(string: validationURLString) else {
print("the validation url could not be created, unlikely error")
return
}
let session = URLSession(configuration: URLSessionConfiguration.default)
var request = URLRequest(url: validationURL)
request.httpMethod = "POST"
request.cachePolicy = URLRequest.CachePolicy.reloadIgnoringCacheData
let task = session.uploadTask(with: request, from: requestData) { (data, response, error) in
if let data = data , error == nil {
do {
let appReceiptJSON = try JSONSerialization.jsonObject(with: data, options: .allowFragments)
if let dict = appReceiptJSON as? NSDictionary {
print(dict["last_receipt_info"]!) // nil value ????
}
}catch {
print("JSON serialization failed with error: \(error.localizedDescription)")
}
} else {
print("Upload receipt data but something went wrong. Error: \(error?.localizedDescription)")
}
}
task.resume()
} catch let error as NSError {
print("JSON serialization failed. Error: \(error.localizedDescription)")
}
This function result only status code.. Why ??
The resources I have reviewed:
https://developer.apple.com/library/archive/releasenotes/General/ValidateAppStoreReceipt/Chapters/ValidateRemotely.html#//apple_ref/doc/uid/TP40010573-CH104-SW1
https://medium.flatstack.com/auto-renewable-subscriptions-for-ios-45cb1045f4fa
https://savvyapps.com/blog/how-setup-test-auto-renewable-subscription-ios-app
Thank you for help to me..
Solved problem. Problem is not added shared secret key.
let requestDictionary = ["receipt-data": receipt, "password": "xxxxxxxxxxxxxxx"]
True way 👆🏻
I need to parse JSON from 2 different URL's
let jsonUrlStr1 = "https://123"
let jsonUrlStr2 = "https://325"
guard let url1 = URL(string: jsonUrlStr1) else { return }
guard let url2 = URL(string: jsonUrlStr2) else { return }
Here I'm running session for 1st url:
URLSession.shared.dataTask(with: url1) { (data, response, err) in
if err != nil {
print("Error:\(String(describing: err))")
}
guard let data = data else { return }
do {
let myData1 = try JSONDecoder().decode(SomeJsonModel1.self, from: data)
//Some code
} catch let jsonErr {
print("Error:\(jsonErr)")
}
}.resume()//URLSession
And then again, I'm running another session for 2nd url, using the same way:
URLSession.shared.dataTask(with: url2) { (data, response, err) in
if err != nil {
print("Error:\(String(describing: err))")
}
guard let data = data else { return }
do {
let myData2 = try JSONDecoder().decode(SomeJsonModel2.self, from: data)
//Some code
} catch let jsonErr {
print("Error:\(jsonErr)")
}
}.resume()//URLSession
This code works and I get the result.
But I think there should be a more correct way to parse 2 URLs.
Please advise how to do it correctly. Thanks.
You can try using completion block like this :
func getDataFromJson(url: String, completion: #escaping (_ success: [String : Any]) -> Void) {
let request = URLRequest(url: URL(string: url)!)
let task = URLSession.shared.dataTask(with: request) { Data, response, error in
guard let data = Data, error == nil else { // check for fundamental networking error
print("error=\(String(describing: error))")
return
}
if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 { // check for http errors
print("statusCode should be 200, but is \(httpStatus.statusCode)")
print(response!)
return
}
let responseJSON = try! JSONSerialization.jsonObject(with: data, options: .allowFragments) as! [String : Any]
completion(responseJSON)
}
task.resume()
}
and call method like this :
let jsonUrlStr1 = "https://123"
let jsonUrlStr2 = "https://325"
getDataFromJson(url: jsonUrlStr1, completion: { response in
print("JSON response for url1 :: ",response) // once jsonUrlStr1 get it's response call next API
getDataFromJson(url: jsonUrlStr2, completion: { response in
print("JSON response for url2 :: ",response)
})
})
let url1 = "https://jsonplaceholder.typicode.com/posts"
var request = URLRequest(url: URL(string: url1)!)
request.httpMethod = "GET"
let urlSession = URLSession.shared
let task = urlSession.dataTask(with: request, completionHandler: {(data,response,error) -> Void in
if let error = error {
print(error)
return
}
if let data = data {
OperationQueue.main.addOperation({ () -> Void in
self.tableView.reloadData()
})
}
})
task.resume()
With or without http method, response data is empty. What am I doing wrong? WiFi works fine. Maybe problem on my simulator settings?
let url = URL(string: "https://jsonplaceholder.typicode.com/posts")
URLSession.shared.dataTask(with:url!, completionHandler: {(data, response, error) in
guard let data = data, error == nil else { return }
do {
let json = try JSONSerialization.jsonObject(with: data, options: .allowFragments)
let posts = json as? [[String: Any]] ?? []
print(posts)
for post in posts{
let product = Product()
product.userId = post["userId"] as! Int
product.id = post["id"] as! Int
product.title = post["title"] as! String
product.body = post["body"] as! String
self.products.append(product)
}
} catch let error as NSError {
print(error)
}
}).resume()
Yeah thanks, but your code is not works too, i mean say data is empty, nothing to be parsed. WiFi on my emulator works fine maybe problem on my xcode8?
Made some changes in your code.
let url = NSURL(string: "https://jsonplaceholder.typicode.com/posts")
NSURLSession.sharedSession().dataTaskWithRequest(NSURLRequest.init(URL: url!), completionHandler: {(data, response, error) in
guard let data = data where error == nil else { return }
do {
let posts = try NSJSONSerialization.JSONObjectWithData(data, options: .AllowFragments)
print(posts)
} catch let error as NSError {
print(error)
}
}).resume()
Output :
Here your all 100 post display