我正在尝试构建一个简单的录音应用程序，它从麦克风输入并在按下停止时保存录音，然后播放器从本地存储中检索录音并播放。
以下代码允许用户录制音频并将其保存到URL并从同一URL播放。
我想要做的是当我按下停止时将音频保存到Coredata，并在按下播放时从Coredata中检索音频。
@IBOutlet weak var RecordBTN: UIButton!
@IBOutlet weak var AddBTN: UIButton!
// Variables handeling Recording and Playing
var SoundRecorder : AVAudioRecorder!
var SoundPlayer : AVAudioPlayer!
override func viewDidLoad() {
super.viewDidLoad()
// Keeps constraints when we run the app
self.view.layoutIfNeeded()
setupRecorder()
}
func setupRecorder()
{
// Format: Lossless audio
// Quality: Max of raw value
// Bit Rate: 320 Kb/s [ AppleMusic: 256 Kb/s, Spotify: 320 Kb/s]
let recordSettings : [String : AnyObject] =
[AVFormatIDKey : NSNumber(value: kAudioFormatAppleLossless as UInt32),
AVEncoderAudioQualityKey : AVAudioQuality.max.rawValue as NSNumber,
AVEncoderBitRateKey : 320000 as NSNumber,
AVNumberOfChannelsKey : 2 as NSNumber,
AVSampleRateKey : 44100.0 as NSNumber]
do {
// Initiallizing SoundRecorder
// as [NSObject : AnyObject] after recordSettings
try SoundRecorder = AVAudioRecorder(url: getFileURL(),
settings: recordSettings as [String : AnyObject])
} catch {
// Catches any error
print("Something's went wrong with setting up the audio")
}
// Preparing sound recorder to record
SoundRecorder.delegate = self
SoundRecorder.prepareToRecord()
}
func getCacheDir() -> String
{
// Where audio files will be held
// Search inside documents inside of the app
let paths = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory,
FileManager.SearchPathDomainMask.userDomainMask, true) as [String]
return paths[0]
}
func getFileURL() -> URL
{
// Finding the file path to the specified file name
let path = (getCacheDir() as NSString).appendingPathComponent(fileName)
let filePath = URL(fileURLWithPath: path)
return filePath
}
func preparePlayer()
{
do{
try SoundPlayer = AVAudioPlayer(contentsOf: getFileURL())
} catch {
print("Somethingwrong with the Sound Player")
}
SoundPlayer.delegate = self
SoundPlayer.prepareToPlay()
SoundPlayer.volume = 10.0
}
@IBAction func Record(_ sender: UIButton) {
if (sender.titleLabel?.text == "Record")
{
SoundRecorder.record();
sender.setTitle("Stop", for: UIControlState())
sender.setImage(UIImage (named: "StopBTN"), for: UIControlState())
PlayBTN.isEnabled = false
progressBar.progress = Float(SoundRecorder.currentTime)
}
else
{
SoundRecorder.stop();
sender.setTitle("Record", for: UIControlState())
sender.setImage(UIImage (named: "RecordBTN"), for: UIControlState())
PlayBTN.isEnabled = true
}
}
@IBAction func Play(_ sender: UIButton) {
if(sender.titleLabel?.text == "Play")
{
RecordBTN.isEnabled = false
sender.setTitle("Stop", for: UIControlState())
sender.setImage(UIImage (named: "StopBTN"), for: UIControlState())
preparePlayer()
SoundPlayer.play()
}
else if (sender.titleLabel?.text == "Stop" || (SoundPlayer.currentTime == SoundPlayer.duration))
{
SoundPlayer.stop()
sender.setTitle("Play", for: UIControlState())
sender.setImage(UIImage (named: "PlayBTN"), for: UIControlState())
RecordBTN.isEnabled = true
}
}
我在Coredata中添加了Recordings实体，仍然对使用什么属性感到困惑，不知道我是否会保存URL或二进制文件。