Question

I have a problem with SoundCloud API in my application.
I have created an app, what get link to the track (e.g. something like this http://api.soundcloud.com/tracks/48760960) and get stream_url, what later can be played using SCAudioStream. There is no auth for users, I use only client id and client secret of my app. App is registered.

I create soundCloudManager this way:

- (id)init
{
    if(self = [super init])
    {
        conf = [SCSoundCloudAPIConfiguration configurationForProductionWithClientID: kSCClientID
                                                                       clientSecret: kSCClientSecret
                                                                        redirectURL: kSCRedirectURL];
        conf.accessTokenURL = kSCAccessTokenURL;
        api = [[SCSoundCloudAPI alloc] initWithDelegate: self 
                                 authenticationDelegate: self 
                                       apiConfiguration: conf];
       //[api checkAuthentication];
    }
    return self;
}

If uncomment [api checkAuthentication], then logs will says next:

“auth ready with URL:https://soundcloud.com/connect?client_id=&redirect_uri=&response_type=code”

Then I call this method to get data from track:

- (void)runSearchingStreamWithTrackID: (NSString *)trackID
{
    [api performMethod: @"GET" 
            onResource: @"tracks" 
        withParameters: [NSDictionary dictionaryWithObject:trackID forKey:@"ids"] 
               context: @"trackid" 
              userInfo: nil];
}

And then this delegate’s method calls:

- (void)soundCloudAPI:(SCSoundCloudAPI *)soundCloudAPI 
     didFailWithError:(NSError *)error 
              context:(id)context 
             userInfo:(id)userInfo 

Text of error:

“HTTP Error: 401”.

It means unauthorized. But why? Should I be authorized as soundCloud user to getting info about tracks?

I’m using this for SoundCloudAPI:
https://github.com/soundcloud/cocoa-api-wrapper

Please, help! 🙁

---

Today I fixed it. I just add this method to init :

[api authenticateWithUsername:kLogin password:kPwd];

After it this method was called:

- (void)soundCloudAPIDidAuthenticate

So, this test account was authorized.

Then I call this method:

- (void)runSearchingStreamWithTrackID: (NSString *)trackID
{
    [api performMethod: @"GET" 
            onResource: @"tracks" 
        withParameters: [NSDictionary dictionaryWithObject:trackID forKey:@"ids"] 
               context: @"trackid" 
              userInfo: nil];
}

And no one of these methods will be called:

- (void)soundCloudAPI:(SCSoundCloudAPI *)soundCloudAPI 
     didFailWithError:(NSError *)error 
              context:(id)context 
             userInfo:(id)userInfo;
- (void)soundCloudAPI:(SCSoundCloudAPI *)soundCloudAPI 
    didFinishWithData:(NSData *)data 
              context:(id)context 
             userInfo:(id)userInfo;
- (void)soundCloudAPIDidAuthenticate;
- (void)soundCloudAPIDidResetAuthentication;
- (void)soundCloudAPIDidFailToGetAccessTokenWithError:(NSError *)error;
- (void)soundCloudAPIPreparedAuthorizationURL:(NSURL *)authorizationURL;

But there is log:

-[NXOAuth2PostBodyStream open] Stream has been reopened after close

And this method was called:

[NXOAuth2Client oauthConnection:connection didFailWithError:error];
error: HTTP 401

What do I wrong?

Answer 1

I understood the problem. Just download the SC API from the official site and install the latest SC API. Then do something like this:

- (void)searchStreamURLByTrackID: (NSString *)trackID
{
NSString *string = [NSString stringWithFormat:@"https://api.soundcloud.com/tracks/%@.json?client_id=%@", trackID, kSCClientID];

[SCRequest performMethod: SCRequestMethodGET 
              onResource: [NSURL URLWithString:string]
         usingParameters: nil 
             withAccount: nil
  sendingProgressHandler: nil 
         responseHandler:^(NSURLResponse *response, NSData *data, NSError *error){

                                      NSString *resultString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
                                      NSLog(@"FOUND:\n%@", resultString);
                              }
                      ];

}

After that obtain the stream url from the JSON in the resultString.

Finally, you have to write this code:

NSString *streamURL = [(NSDictionary *)jsonData objectForKey:@"stream_url"];
NSString *realURL = [streamURL stringByAppendingFormat:@".json?client_id=%@", kSCClientID];
AVPlayer *player = [[AVPlayer alloc] initWithURL:[NSURL URLWithString:realURL]];

Enjoy!