de Google en Objective-C

Question

me gustaría utilizar esta API de Google (solo para pruebas):

https://www.google.com/speech-api/v1/recognize?xjerr=1&client=chromium&lang=en-US

Mi pregunta es: ¿Cómo debo enviar una solicitud POST a esta URL? Estoy usando:

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *recDir = [paths objectAtIndex:0]; 
NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/recordTest.flac", recDir]]; 


NSData *myData = [NSData dataWithContentsOfFile:[NSString stringWithFormat:@"%@/recordTest.flac", recDir]]; 
//NSString *audio = [NSString stringWithContentsOfFile:[NSString stringWithFormat:@"%@/recordTest.flac", recDir]]; 



NSMutableURLRequest *request = [[NSMutableURLRequest alloc] 
           initWithURL:[NSURL 
              URLWithString:@"https://www.google.com/speech-api/v1/recognize?xjerr=1&client=chromium&lang=en-US"]]; 






[request setHTTPMethod:@"POST"]; 

//set headers 

[request addValue:@"Content-Type" forHTTPHeaderField:@"audio/x-flac; rate=16000"]; 

[request addValue:@"audio/x-flac; rate=16000" forHTTPHeaderField:@"Content-Type"]; 

NSString *requestBody = [[NSString alloc] initWithFormat:@"Content=%@", myData]; 

[request setHTTPBody:[requestBody dataUsingEncoding:NSASCIIStringEncoding]]; 

[request setValue:[NSString stringWithFormat:@"%d",[myData length]] forHTTPHeaderField:@"Content-length"]; 



NSHTTPURLResponse* urlResponse = nil; 
NSError *error = [[NSError alloc] init]; 
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error]; 
NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]; 

NSLog(@"The answer is: %@",result); 

Pero obtener sólo

{ 
"status":5, 
"id":"fe6ba68a593f9919f5fd33e819d493a0-1", 
"hypotheses":[ 
HERE SHOULD BE THE TEXT 
] 
} 

¿Cuál es incorrecto/¿qué debería hacer?

Answer 1

En lugar de molestarse con la implementación de cacao en lugar desordenado, echa un vistazo a mi extremadamente fácil de usar (una función) de la biblioteca C de Google de voz: http://github.com/H2CO3/libsprec

Answer 2

FYI de estado: 0 - correcto, estado: 4 - archivo de audio faltante, estado: 5 - archivo de audio incorrecto.

In place of ; 

    NSString *requestBody = [[NSString alloc] initWithFormat:@"Content=%@", myData]; 
    [request setHTTPBody:[requestBody dataUsingEncoding:NSASCIIStringEncoding]]; 

Just Use;

[request setHTTPBody:myData]; 

Aquí está trabajando código de referencia:

- (void) googleSTT {

NSString *homeDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]; 
    NSString *filePath = [NSString stringWithFormat:@"%@/%@", homeDirectory, @"test.flac"]; 

    NSData *myData = [NSData dataWithContentsOfFile:filePath]; 


    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] 
           initWithURL:[NSURL 
              URLWithString:@"https://www.google.com/speech-api/v1/recognize?xjerr=1&client=chromium&lang=en-US"]]; 

    [request setHTTPMethod:@"POST"]; 

    //set headers 

    [request addValue:@"Content-Type" forHTTPHeaderField:@"audio/x-flac; rate=16000"]; 

    [request addValue:@"audio/x-flac; rate=16000" forHTTPHeaderField:@"Content-Type"]; 

    [request setHTTPBody:myData]; 

    [request setValue:[NSString stringWithFormat:@"%d",[myData length]] forHTTPHeaderField:@"Content-length"]; 

    NSHTTPURLResponse* urlResponse = nil; 
    NSError *error = [[NSError alloc] init]; 
    NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error]; 
    NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]; 

    NSLog(@"The answer is: %@",result); 

}

Answer 3

yo estaba luchando con el mismo problema, pero más tarde lo resolví por haciendo referencia a este enlace https://github.com/gillesdemey/google-speech-v2.and solo reemplazó su solicitud NSMutableURLRequest * con este NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:[NSURL URLWithString:@"https://github.com/gillesdemey/google-speech-v2"]];