Apple Watch Kit wouldn't fetch Image

Question

Apple Watch Kit wouldn't fetch image from URL

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        NSLog(@"URL string for image %@",urlStr);
        NSData *imgData = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlStr]];
        });

The fetch did work in Watch Simulator, But when I run it with a watch, I get these error as log

2016-12-19 15:21:47.491560 Test app WatchKit App Extension[250:130169] dnssd_clientstub ConnectToServer: connect()-> No of tries: 1 2016-12-19 15:21:48.497360 Test app WatchKit App Extension[250:130169] dnssd_clientstub ConnectToServer: connect()-> No of tries: 2 2016-12-19 15:21:49.499671 Test app WatchKit App Extension[250:130169] dnssd_clientstub ConnectToServer: connect()-> No of tries: 3 2016-12-19 15:21:50.501699 Test app WatchKit App Extension[250:130169] dnssd_clientstub ConnectToServer: connect() failed path:/var/run/mDNSResponder Socket:7 Err:-1 Errno:1 Operation not permitted 2016-12-19 15:21:50.502103 Test app WatchKit App Extension[250:130169] [] nw_resolver_create_dns_service_on_queue DNSServiceCreateConnection failed: ServiceNotRunning(-65563)

Answer 1

You cannot use the NSDataWithContentsOfURL for image downloading. It will not work anymore in real watch os device. You may use URLSession or other third party library such as Kingfisher.