ios - Program skips NSURLRequest used to download txt file, if placed in IB action with other code -


i using nsurl request in objective -c in order download webpage , place in text file. similar curl function used in unix.

here code:

    nsstring *documentdir = [nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes) firstobject];     nsstring *filepath = [documentdir stringbyappendingpathcomponent:@"data.txt"];      nsurlrequest *request = [nsurlrequest requestwithurl:[nsurl urlwithstring:@"https://ca.finance.yahoo.com/q?s=jnj"]];     [nsurlconnection sendasynchronousrequest:request queue:[nsoperationqueue currentqueue] completionhandler:^(nsurlresponse *response, nsdata *data, nserror *error) {         if (error) {                nslog(@"download error:%@",error.description);         }         if (data) {             [data writetofile:filepath atomically:yes];             nslog(@"file saved %@",filepath);         }     }];

i finding if execute code in own ib action (no other code) linked test button working no bugs.

however in main ib action program compiler seems skipping on code , not executing (observed lack of downloaded file). appreciate feedback on possible sources of bug.

you must create nsoperationqueue instance:

[nsurlconnection sendasynchronousrequest:request [nsoperationqueue new] completionhandler:^(nsurlresponse *response, nsdata *data, nserror *error) {

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