SFSpeechRecognizer is not available

Question

I've downloaded the sample code SpeakToMe at: https://developer.apple.com/library/prerelease/content/samplecode/SpeakToMe/Introduction/Intro.html
Run it on the device and start recording but receiving no response. After a little debug I see the speechRecognizer.isAvailable is false. But sometimes it still available and work normally. I've checked internet connection as recommendation at https://developer.apple.com/reference/speech/sfspeechrecognizer/1649885-isavailable
What can I do in this situation?

Thank you

Answer 1

Either Siri or Dictation needs to be enabled in Settings:

• iOS 10: Settings -> Siri -> Turn ON
• iOS 11: Settings -> Press Home/Side Button for Siri -> Turn ON

or

• Settings -> General -> Keyboard -> Enable Dictation -> Turn ON

Answer 2

Eddie's answer is a bit off now in iOS 11, with Siri settings being changed.

From Settings, select Siri & Search:

Then choose one or both of these options: