ios - NSUrlRequest 在模拟器中有效，但在 iPhone 上无效
<p><p>我有一个应用程序，它记录麦克风的声音，然后通过 NSUrlRequest 将其发送到我的网站。为了测试它，我添加了从网站播放的音频，这样我就可以听到它是否有效。 <br/>
当我在模拟器上测试它时，一切正常:录制并上传了音频，我可以听到它，但是当我将它安装到我的 iPhone 上时，我什么也听不见，而且在我的网站上，音频文件损坏了。</p >
<p>我的 TestNahravani.swift 代码:</p>
<pre><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 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
}
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()
}
</code></pre>
<p>}</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p><strong>我发现我的问题出在哪里</strong><br/>
<br/>
看起来，iPhone 模拟器不需要激活 AVAudioSession，而真正的 iPhone 则需要。<br/>
<br/>
因此可以通过添加轻松修复</p>
<pre><code>try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryRecord)
try AVAudioSession.sharedInstance().setActive(true)
</code></pre>
<p>audioRecorder 初始化之前。</p></p>
<p style="font-size: 20px;">关于ios - NSUrlRequest 在模拟器中有效，但在 iPhone 上无效，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/45143487/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/45143487/
</a>
</p>
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