How to get access token in instagram api without interaction of a browser?

To obtain the access token in instagram using this code
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"", CLIENT_ID, REDIRECT_URI]]];

CLIENT_ID and REDIRECT_URI are those data which have given me instagram. In the end, the token I receive. In order to get it you need to enter the same in the browser, then receive a token access_token=*********************** , but how to get it without interacting with the browser?
July 8th 19 at 11:17

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