SPTTrack trackWithURI issue - ios

Question

I had created the new project which fetches the track of songs, so I tried to pass an array of SPTTracks to the player, please find it below.
self.player = [[SPTAudioStreamingController alloc] initWithClientId:auth.clientID];
self.player.diskCache = [[SPTDiskCache alloc] initWithCapacity:1024 * 1024 * 64];
NSString *trackURI = #"spotify:track:1zHlj4dQ8ZAtrayhuDDmkY";
[SPTTrack trackWithURI:[NSURL URLWithString:trackURI] accessToken:auth.session.accessToken market:#"ES" callback:^(NSError *error, id object) {
if (!error) {
SPTTrack *trackInfo = object;
NSArray *tracks = #[trackInfo];
[self.player playURIs:tracks fromIndex:0 callback:^(NSError *error) {
if (!error) {
} else {
NSLog(#"*** Failed to play track : %#", error);
}
}];
} else {
NSLog(#"Error %#", error);
}
}];
But I get crashes, whenever I run it. Please find error below while it is getting crash :
Simple Track Playback[254:24669] -[__NSCFConstantString absoluteString]: unrecognized selector sent to instance 0x1000c0508
I had also looked it on spotify api spotify_ios_sdk but I had found that one developer had already posted the same issue link.
If anyone has solved these type of issue then please provide your guidance.
Thanks in advanced.

Answer 1

Unfortunately, this method is not "equivalent", because the SPTTrack object returned inside the callback of [SPTTrack trackWithURI.... has many less informations.
I've tried some workaround, and I found that for me the solution is
1) Create a request for an SPTTrack object.
2) Pass that request to SPRequest performRequest callback.
3) Wait for the response, and eventually create a track from data (please find the below complete code).
self.player = [[SPTAudioStreamingController alloc] initWithClientId:auth.clientID];
self.player.diskCache = [[SPTDiskCache alloc] initWithCapacity:1024 * 1024 * 64];
NSString *market = [[NSLocale currentLocale] objectForKey:NSLocaleCountryCode];
NSURLRequest *request = [SPTTrack createRequestForTrack:[NSURL URLWithString:#"spotify:track:1zHlj4dQ8ZAtrayhuDDmkY"]
withAccessToken:auth.session.accessToken
market:market
error:nil];
[[SPTRequest sharedHandler] performRequest:request
callback:^(NSError *error, NSURLResponse *response, NSData *data) {
if (!error) {
NSError *parsingError = nil;
SPTTrack *track = [SPTTrack trackFromData:data
withResponse:response
error:&parsingError];
self.arrURIs = #[track.playableUri];
[self.player playURIs:self.arrURIs fromIndex:0 callback:nil];
}
}];
Thanks "Kry256" for detail explaination.