Proper way to use SFSpeechRecognizer? - ios

Question

I'm trying to use SFSpeechRecognizer but I don't have a way to test if I'm implementing it correctly, and since its a relatively new class i couldn't find a sample code (I don't know swift). Am I making any unforgivable mistakes/missing something ?
[SFSpeechRecognizer requestAuthorization:^(SFSpeechRecognizerAuthorizationStatus status){
if (status == SFSpeechRecognizerAuthorizationStatusAuthorized) {
SFSpeechRecognizer* recognizer = [[SFSpeechRecognizer alloc] init];
recognizer.delegate = self;
SFSpeechAudioBufferRecognitionRequest* request = [[SFSpeechAudioBufferRecognitionRequest alloc] init];
request.contextualStrings = #[#"data", #"bank", #"databank"];
SFSpeechRecognitionTask* task = [recognizer recognitionTaskWithRequest:request resultHandler:^(SFSpeechRecognitionResult* result, NSError* error){
SFTranscription* transcript = result.bestTranscription;
NSLog(#"%#", transcript);
}];
}
}];

Answer 1

I´m trying too but this code works for me, after all SFSpeechRecognizer and SFSpeechAudioBufferRecognitionRequest are not the same, so I think (haven´t tested) you have to ask for different permissions (have you asked for permissions before? to use the microphone and the speechRecognition?). Ok here´s the code:
//Available over iOS 10, only for maximum 1 minute, need internet connection; can be sourced from an audio recorded file or over the microphone
NSLocale *local =[[NSLocale alloc] initWithLocaleIdentifier:#"es-MX"];
speechRecognizer = [[SFSpeechRecognizer alloc] initWithLocale:local];
NSString *soundFilePath = [myDir stringByAppendingPathComponent:#"/sound.m4a"];
NSURL *url = [[NSURL alloc] initFileURLWithPath:soundFilePath];
if(!speechRecognizer.isAvailable)
NSLog(#"speechRecognizer is not available, maybe it has no internet connection");
SFSpeechURLRecognitionRequest *urlRequest = [[SFSpeechURLRecognitionRequest alloc] initWithURL:url];
urlRequest.shouldReportPartialResults = YES; // YES if animate writting
[speechRecognizer recognitionTaskWithRequest: urlRequest resultHandler: ^(SFSpeechRecognitionResult * _Nullable result, NSError * _Nullable error)
{
NSString *transcriptText = result.bestTranscription.formattedString;
if(!error)
{
NSLog(#"transcriptText");
}
}];