iOS發送音頻文件到網絡服務器

Question

我目前正在用Swift構建一個iPhone應用程序，我想從我的應用程序發送音頻文件到我的網絡服務器。我目前使用MPMediaPickerController，這讓我我的應用程序中選擇音頻文件，但一旦我選擇文件，它不斷告訴我：

的iPod庫：//item/item.mp3 ID = 12341234

我無法將文件發送到我的Web服務器。我需要以NSData的格式將音頻文件發送到我的網絡服務器。任何人都可以照亮一盞燈爲：

1）什麼我可以做錯了，或者

2）另一種方式來發送音頻文件？

Answer 1

我想這個答案將幫助您：

Sending audio from a Swift App to PHP Server, and somewhere the audio is lost

尤其要注意這部分：

let boundary = "--------14737809831466499882746641449----" 
let beginningBoundary = "--\(boundary)" 
let endingBoundary = "--\(boundary)--" 
let contentType = "multipart/form-data;boundary=\(boundary)" 

因此，對於音頻文件上傳這也很重要。

Answer 2

import AssetsLibrary, 
import AVFoundation, 
import MediaPlayer, 
var soundFileURL:URL!, 
var audio_data: Data? = nil** 

    func mediaPicker(_ mediaPicker: MPMediaPickerController, didPickMediaItems mediaItemCollection: MPMediaItemCollection) 
    { 
     let item = mediaItemCollection.items[0] as? MPMediaItem ?? MPMediaItem() 
     let url: URL? = item.value(forProperty: MPMediaItemPropertyAssetURL) as? URL 

     exportiTunesSong(assetURL: url!) 
     { 
      (response) in 
      print(response ?? "responce") 
     } 

     let songTitle: String = item.value(forProperty: MPMediaItemPropertyTitle) as! String 
     lbl_for_file_name.text = songTitle 

     self.dismiss(animated: true, completion: nil) 
    } 


    func mediapicker() 
    { 
     let mediaPicker = MPMediaPickerController(mediaTypes: .music) 
     mediaPicker.delegate = self 
     present(mediaPicker, animated: true, completion: {}) 
    } 


    func mediaPickerDidCancel(_ mediaPicker: MPMediaPickerController) 
    { 
     print("User selected Cancel tell me what to do") 
     self.dismiss(animated: true, completion: nil) 
     mediaPicker.dismiss(animated: true) { _ in } 

    } 

    func exportiTunesSong(assetURL: URL, completionHandler: @escaping (_ fileURL: URL?) ->()) { 

     let songAsset = AVURLAsset(url: assetURL, options: nil) 

     let exporter = AVAssetExportSession(asset: songAsset, presetName: AVAssetExportPresetAppleM4A) 

     exporter?.outputFileType = "com.apple.m4a-audio" 

     exporter?.metadata = songAsset.commonMetadata 

     let filename = AVMetadataItem.metadataItems(from: songAsset.commonMetadata, withKey: AVMetadataCommonKeyTitle, keySpace: AVMetadataKeySpaceCommon) 


     var songName = "Unknown" 

     if filename.count > 0 { 
      songName = ((filename[0] as AVMetadataItem).value?.copy(with: nil) as? String)! 
     } 

     //Export mediaItem to temp directory 
      exportURL = URL(fileURLWithPath: NSTemporaryDirectory()) 
      .appendingPathComponent(songName) 
      .appendingPathExtension("m4a") 

     exporter?.outputURL = exportURL 
     do 
     { 
      self.audio_data = try Data.init(contentsOf: exportURL!) 
      print("here audio data is \(self.audio_data!)") 

     } catch { 
      print(error) 
     } 
    } 

P.S使用Audio_data發送或使用Alamofire