Swift 2.0: Type of Expression is ambiguous without more context?
You could give the compiler more information:
let recordSettings : [String : Any] =
[
AVFormatIDKey: kAudioFormatMPEG4AAC,
AVEncoderAudioQualityKey : AVAudioQuality.Max.rawValue,
AVEncoderBitRateKey : 320000,
AVNumberOfChannelsKey: 2,
AVSampleRateKey : 44100.0
]
I also got this error message trying to initialise an array of optionals with nil:
var eggs : [Egg] = Array<Egg>(count: 10, repeatedValue: nil)
Expression Type 'Array<Egg>' is ambiguous without more context.
Changing [Egg]
to [Egg?]
fixed the error.
To comply to the required [String : AnyObject]
format required by recordSettings
parameter; In addition to @Unheilig's answer, you'll need to convert your ints
and floats
to NSNumber
:
let recordSettings : [String : AnyObject] =
[
AVFormatIDKey: NSNumber(unsignedInt: kAudioFormatMPEG4AAC),
AVEncoderAudioQualityKey : AVAudioQuality.Max.rawValue as NSNumber,
AVEncoderBitRateKey : 320000 as NSNumber,
AVNumberOfChannelsKey: 2 as NSNumber,
AVSampleRateKey : 44100.0 as NSNumber
]