self.plistDownloadQueue = [NSOperationQueue new];
self.plistDownloadQueue.name = @"HMStrengthenListViewControllerPlistDownloadQueue";
self.plistDownloadQueue.maxConcurrentOperationCount = 1;
- self.plistDownloadQueue.qualityOfService = NSQualityOfServiceBackground;
+ if(floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_9) {
+ self.plistDownloadQueue.qualityOfService = NSQualityOfServiceBackground;
+ }
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
self.plistDownloadSession = [NSURLSession sessionWithConfiguration:configuration
delegate:self