How to cancel SFSpeechURLRecognitionRequest?

Hi, I am trying the speech recognition API. For live recognition, I use

SFSpeechAudioBufferRecognitionRequest			

It works fine in general.

But when I try to use file recognition with

SFSpeechAudioBufferRecognitionRequest

I found that I can't find a way to cancel the recognition? Cancel or kill the request can't stop the call back from result handler. So I need to wait the recognition finish when I receive the result's isFinal flag is true. It make me a little inconvenient if I try to recognize a long audio file and finally decide to cancel the recognition.

Are there some ways to cancel the file recognition directly?

Thank you~~

Eric

How to cancel SFSpeechURLRecognitionRequest?
 
 
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