我正在使用以下代码录制音频文件。
它没有播放。我错过了什么吗?
let audioFilename = getDocumentsDirectory().appendingPathComponent("tt.mp4")
let settings = [
AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
AVSampleRateKey: 12000,
AVNumberOfChannelsKey: 1,
AVEncoderAudioQualityKey: AVAudioQuality.high.rawValue
]
do {
audioRecorder = try AVAudioRecorder(url: audioFilename, settings: settings)
audioRecorder.delegate = self
audioRecorder.record()
} catch {
print(" startRecording fail ")
}
现在,当用户停止录音时,我想将音频文件保存为base64字符串。我正在尝试使用以下代码:
let audioData = try? Data(contentsOf: (audioRecorder?.url)!)
let encodedString = audioData?.base64EncodedString()
print(" data \(encodedString)")
//"AAAAGGZ0eXBtcDQyAAAAAG1wNDJpc29t"
现在我正在尝试播放字符串:
let player = try? AVAudioPlayer(data:(encodedString?.data(using: String.Encoding.init(rawValue: 0)))!)
player?.prepareToPlay()
player?.play()
它没有播放。我错过了什么吗?