ios - base64 字符串到 iOS 中的音频 mp3？

Question

我有一个 base64 字符串，想将它转换成 mp3 音频文件。

var audioData = Data(base64Encoded: strBase64, options: .ignoreUnknownCharacters)
print(audioData)

它总是返回零。

Answer 1

let base64String : String = "some sample base64"
let audioData = Data(base64Encoded: base64String, options: .ignoreUnknownCharacters)

if audioData != nil {
  if let audData = audioData {
    self.playAudio(audioData: audData)
  }
}

func playAudio(audioData : Data) {
  let filename = documentsDirectory.appendingPathComponent("output.mp3")
  do {
    try audioData.write(to: filename, options: .atomicWrite)
    do {
      audioPlayer = try AVAudioPlayer(contentsOf: filename)
      guard let player = audioPlayer else { return }
      player.prepareToPlay()
      player.play()
    } catch let error {
      print(error.localizedDescription)
    }
  } catch {
  }
}