base64字符串到iOS中的音频mp3？

Question

我有一个base64字符串，想将其转换为mp3音频文件。

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

它总是返回nil。

Answer 1

let base64String：String =“一些样本base64”     让audioData = Data（base64Encoded：base64String，选项：.ignoreUnknownCharacters）                 如果audioData！= nil                 {                     如果让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 {
    }
}