xcode - 在Xcode中记录设置:Swift 2.0

Question

这是我在教程(https://youtu.be/4qj1piMAPE0)中看到的 Swift 2.0 代码。我在第一行得到错误:

Type of expression is ambiguous without more content.

import AVFoundation
import UIKit
...
var recordSettings = [AVFormatIDKey: kAudioFormatAppleLossless,
        AVEncoderAudioQualityKey: AVAudioQuality.Max.rawValue,
        AVEncoderBitRateKey: 320000,
        AVNumberOfChannelsKey: 2,
        AVSampleRateKey: 44100.0]

Answer 1

你可以试试:

var recordSettings : [String : Any] =
[
    AVFormatIDKey: kAudioFormatMPEG4AAC,
    AVEncoderAudioQualityKey : AVAudioQuality.Max.rawValue,
    AVEncoderBitRateKey : 320000,
    AVNumberOfChannelsKey: 2,
    AVSampleRateKey : 44100.0
]