Downloading web content with Swift 3 - ios

Question

I am trying to download webcontent for a weather app that I am making. When I run the app the source code on the website does not appear on my Xcode. I also updated my info.plist to accept web content.
Do you have an idea on what the problem is and how I can solve it?
I have a copied my code below:
override func viewDidLoad() {
super.viewDidLoad()
let url = NSURL(string: "http://weather.weatherbug.com/weather-forecast/now/abuja")!
let request = NSMutableURLRequest(url:url as URL)
let task = URLSession.shared.dataTask(with: request as URLRequest) {
data, response, error in
if error != nil{
print(error.debugDescription)
}
else {
if let unwrappedData = data{
let dataString = NSString(data: unwrappedData, encoding: String.Encoding.utf8.rawValue)
print(dataString as Any)
}
}
}
task.resume()
}

Answer 1

Change your url to use https and it should work.
let url = NSURL(string: "https://weather.weatherbug.com/weather-forecast/now/abuja")!

Answer 2

Here's an example in Swift 4 for downloading a document and parsing as JSON:
// If you're doing this in an Xcode Playground, uncomment these lines:
// import XCPlayground
// XCPSetExecutionShouldContinueIndefinitely()
let url = URL(string: "http://json-schema.org/example/geo.json")!
let task = URLSession.shared.dataTask(with: url) {
data, response, error in
guard error == nil else { return }
guard data != nil else { return }
guard (response as? HTTPURLResponse)?.statusCode == 200 else { return }
do {
if let json = try JSONSerialization.jsonObject(with: data!, options: []) as? [String: Any] {
print(json)
}
} catch { return }
}
task.resume()

Answer 3

Use "if let" instead of only "let" and it should work.
if let url = URL(string:"http://weather.weatherbug.com/weather-forecast/now/abuja"){
let request = NSMutableURLRequest(url: url)
let task = URLSession.shared.dataTask(with: request as URLRequest){
data, responds, error in
if error != nil{
print(error!)
} else {
if let unwrappedData = data {
let dataString = NSString(data: unwrappedData, encoding: String.Encoding.utf8.rawValue)
print(dataString!)
DispatchQueue.main.sync(execute: {
})
}
}
}
task.resume()
}

Answer 4

Use
let myURLString = "http://weather.weatherbug.com/weather-forecast/now/abuja"
guard let myURL = URL(string: myURLString) else {
print("Error: \(myURLString) doesn't seem to be a valid URL")
return
}
do {
let myHTMLString = try String(contentsOf: myURL, encoding: .ascii)
print("HTML : \(myHTMLString)")
} catch let error {
print("Error: \(error)")
}
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