NSUrlRequest works in simulator but not on iphone - ios

Question

I have an app which records sound from microphone and then sends it to my website through NSUrlRequest. To test it, I added that audio is played from website so I can hear if it worked.
When I test it on simulator, everything works fine: audio is recorded and uploaded and I can hear it, but when I install it on my iPhone, I cannot hear anything and at my website, there is a corrupted audio file.
My TestNahravani.swift Code:
import UIKit
import AVFoundation
class TestNahravani: UIViewController, AVAudioRecorderDelegate, AVAudioPlayerDelegate {
#IBOutlet weak var recordButton: UIButton!
#IBOutlet weak var playButton: UIButton!
var soundRecorder: AVAudioRecorder!
var soundPlayer:AVAudioPlayer?
let fileName = "demo.m4a"
override func viewDidLoad() {
super.viewDidLoad()
setupRecorder()
}
#IBAction func recordSound(sender: UIButton) {
if (sender.titleLabel?.text == "Record"){
soundRecorder.record()
sender.setTitle("Stop", for: .normal)
playButton.isEnabled = false
} else {
soundRecorder.stop()
sender.setTitle("Record", for: .normal)
}
}
#IBAction func playSound(sender: UIButton) {
if (sender.titleLabel?.text == "Play"){
recordButton.isEnabled = false
sender.setTitle("Stop", for: .normal)
preparePlayer()
} else {
soundPlayer?.stop()
sender.setTitle("Play", for: .normal)
}
}
// MARK:- AVRecorder Setup
func setupRecorder() {
//set the settings for recorder
let recordSettings = [AVSampleRateKey : NSNumber(value: Float(44100.0)),
AVNumberOfChannelsKey : NSNumber(value: 2),
AVEncoderAudioQualityKey : NSNumber(value: Int32(AVAudioQuality.max.rawValue)),
AVFormatIDKey : NSNumber(value: kAudioFormatMPEG4AAC)]
var error: NSError?
do {
soundRecorder = try AVAudioRecorder(url: getFileURL() as URL, settings: recordSettings)
} catch let error1 as NSError {
error = error1
soundRecorder = nil
}
if let err = error {
print("AVAudioRecorder error: \(err.localizedDescription)")
} else {
soundRecorder.delegate = self
soundRecorder.prepareToRecord()
}
}
// MARK:- Prepare AVPlayer
func preparePlayer() {
var errorX: NSError?
let dirPaths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
let docsDir: AnyObject=dirPaths[0] as AnyObject
var recordedFilePath : String = docsDir.appendingPathComponent(fileName)
let recordedFileURL = getFileURL()
// "currentFilename", "recordedFilePath" and "recordedFileURL" are all global variables
// This recording stored at "recordedFileURL" can be played back fine.
let sendToPath = "http://www.kvetinac97.cz/jt.php"
let sendToURL = NSURL(string: sendToPath)
let recording: NSData! = NSData(contentsOf: recordedFileURL as URL)
if recording == nil {
recordedFilePath = "FailedUpload"
}
let boundary = "--------14737809831466499882746641449----"
let contentType = "multipart/form-data;boundary=\(boundary)"
let beginningBoundary = "--\(boundary)"
let endingBoundary = "--\(boundary)--"
let header = "Content-Disposition: form-data; name=\"\(fileName)\"; filename=\"\(recordedFilePath)\"\r\n"
let body = NSMutableData()
body.append(("\(beginningBoundary)\r\n" as NSString).data(using: String.Encoding.utf8.rawValue)!)
body.append((header as NSString).data(using: String.Encoding.utf8.rawValue)!)
body.append(("Content-Type: application/octet-stream\r\n\r\n" as NSString).data(using: String.Encoding.utf8.rawValue)!)
body.append(recording! as Data) // adding the recording here
body.append(("\r\n\(endingBoundary)\r\n" as NSString).data(using: String.Encoding.utf8.rawValue)!)
let request = NSMutableURLRequest()
request.url = sendToURL! as URL
request.httpMethod = "POST"
request.addValue(contentType, forHTTPHeaderField: "Content-Type")
request.addValue("multipart/form-data", forHTTPHeaderField: "Accept")
request.httpBody = body as Data
let session = URLSession.shared
let task = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
if let data = NSData(contentsOf: NSURL(string: "http://www.kvetinac97.cz/uploads/demo.m4a")! as URL) {
do {
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
try AVAudioSession.sharedInstance().setActive(true)
self.soundPlayer = try AVAudioPlayer(data: data as Data, fileTypeHint: AVFileType.m4a.rawValue)
self.soundPlayer!.delegate = self
self.soundPlayer!.prepareToPlay()
self.soundPlayer!.volume = 1.0
self.soundPlayer!.play()
} catch let error1 as NSError {
errorX = error1
self.soundPlayer = nil
print ("Chyba nejaka \(error1)")
}
}
else {
print ("Smulicka")
}
})
task.resume()
}
func generateBoundaryString() -> String {
return "Boundary-\(NSUUID().uuidString)"
}
// MARK:- File URL
func getCacheDirectory() -> String {
let paths = NSSearchPathForDirectoriesInDomains(.cachesDirectory,.userDomainMask, true)
return paths[0]
}
func getFileURL() -> NSURL {
let path = getCacheDirectory().appending(fileName)
let filePath = NSURL(fileURLWithPath: path)
return filePath
}
// MARK:- AVAudioPlayer delegate methods
func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {
recordButton.isEnabled = true
playButton.setTitle("Play", for: .normal)
}
// MARK:- AVAudioRecorder delegate methods
func audioRecorderDidFinishRecording(_ recorder: AVAudioRecorder, successfully flag: Bool) {
playButton.isEnabled = true
recordButton.setTitle("Record", for: .normal)
}
// MARK:- didReceiveMemoryWarning
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}

Answer 1

I figured out where my problem was
As it appears, iPhone simulator does not require AVAudioSession to be activated whilst real iPhone does.
So it can be fixed easily with adding
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryRecord)
try AVAudioSession.sharedInstance().setActive(true)
before audioRecorder initialization.