Android 录制的 aac(.mp3) 文件无法在 iOS 中播放

您好，我正在使用以下代码在 Android 上录制音频

myRecorder = new MediaRecorder();
myRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
myRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
myRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
myRecorder.setAudioSamplingRate(44100);
myRecorder.setAudioEncodingBitRate(256);
myRecorder.setAudioChannels(1);
voiceFileName = getFilename();
myRecorder.setOutputFile(voiceFileName);

private String getFilename() {
    String filepath = Environment.getExternalStorageDirectory().getPath();
    File file = new File(filepath, "test");

    if (!file.exists()) {
        file.mkdirs();
    }
    return (file.getAbsolutePath() + "/" + System.currentTimeMillis() + ".mp3");

}

但该 aac(.mp3) 文件无法在 iOS 上播放。 编辑

let audioFilename = getDocumentsDirectory().stringByAppendingPathComponent("whistle.mp3")
let audioURL = NSURL(fileURLWithPath: audioFilename)
let whistlePlayer:AVAudioplayer = try AVAudioPlayer(contentsOfURL: audioURL)
whistlePlayer.play()

如何在 IOS(Swift) 中播放该文件？

我得到的解决方案只是将扩展名更改为 .m4a 它适用于 ios

let audioFilename = getDocumentsDirectory().stringByAppendingPathComponent("voice.m4a")
let audioURL = NSURL(fileURLWithPath: audioFilename)
do
 {
   audioPlayer = try AVAudioPlayer(contentsOfURL: audioURL)
   audioPlayer.delegate = self
   audioPlayer.play()
 }
catch{
   print("filenotfound")
}