录制音频、创建文件夹

使用懒加载创建AVFoundation

class ViewController: UIViewController {

//MARK:- 懒加载  通过闭包创建
lazy var record : AVAudioRecorder? = {
    /**
     参数：
     url: 文件存储路径
     settings：录音的设置项
     */
    //这个方法只能取出路径 而不能创建路径
    var path = (NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true).first)!
     path = path + "/CustomeAudio"
    do {
       try FileManager.default.createDirectory(atPath: path, withIntermediateDirectories: true, attributes: nil)
    }catch {
        print(error)
    }
    let filePath = path + "/test.caf"
    let fileURL = NSURL(string: filePath)!
    let configDic:[String : AnyObject] = [
        // 编码格式
        AVFormatIDKey: NSNumber(value: Int32(kAudioFormatLinearPCM)),
        // 采样率
        AVSampleRateKey: NSNumber(value: 11025.0),
        // 通道数
        AVNumberOfChannelsKey: NSNumber(value: 2),
        // 录音质量
        AVEncoderAudioQualityKey: NSNumber(value: Int32(AVAudioQuality.min.rawValue))
    ]
    
    do {
        
        let record = try AVAudioRecorder(url: fileURL as URL, settings: configDic)
        //准备录音：系统会给我们分配一些资源
        record.prepareToRecord()
        return record
    } catch {
        print(error)
        return nil
    }
    
}()

override func viewDidLoad() {
    super.viewDidLoad()
   let paths = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true)
    let documentDir = paths[0]
    let filePath = documentDir + "/Direct"
    do {
        try FileManager.default.createDirectory(atPath: filePath, withIntermediateDirectories: true, attributes: nil)
    }catch {
        print(error)
    }
}


//MARK:- 点击屏幕时开始录音
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    //开始录音
    print("开始录音")
    record?.record()
}

//MARK:- 结束录音
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
    //根据当前的录音时间，做处理
    let duration = record?.currentTime ?? 0
    if duration < 2 {
        print("录音时间太短,请重新录制")
        record?.stop()
        record?.deleteRecording()
        return
    }
    //结束录音
    print("录音时间刚刚好，可以保存")
    record?.stop()
}

}