getRecord.m

// get a specific record

[client getRecord:@"recordID"
          inLayer:@"com.simplegeo.example"
         callback:[SGCallback callbackWithSuccessBlock:
                   ^(id response) {
                       // you've got a record!
                       // to create an SGStoredRecord object...
                       SGStoredRecord *record = [SGStoredRecord recordWithGeoJSON:response];
                   } failureBlock:^(NSError *error) {
                       // handle failure
                   }]];