摘要： staticNSOperationQueue* queue;- (void)viewDidLoad{ [superviewDidLoad]; queue= [[NSOperationQueuealloc]init]; NSInvocationOperation* op = [[NSInvocationOperationalloc]initWithTarget:selfselector:@selector(download)object:nil]; [queueaddOperation:op];}- (void)download { NSURL * url = [NSURLURLWit... 阅读全文

摘要： -(NSString*)GetUUID{ CFUUIDRef puuid = CFUUIDCreate( nil ); CFStringRef uuidString = CFUUIDCreateString( nil, puuid ); NSString * result = (NSString *)CFBridgingRelease(CFStringCreateCopy( NULL, uuidString)); CFRelease(puuid); CFRelease(uuidString); return result;} 阅读全文