objective c - Error in get file from iCloud in ios -


hi in app have file icloud.. enable icloud working fine in simulator.. when test in iphone, can see icloud files when choose default delegate calls can't data url..

- (void)documentpicker:(uidocumentpickerviewcontroller *)controller didpickdocumentaturl:(nsurl *)url {     nsdata *pdfdata = [[nsdata alloc] initwithcontentsofurl:url]; }

always getting pdfdata nil. log error 

error domain=nscocoaerrordomain code=257 "the operation couldn’t completed. (cocoa error 257.)" userinfo=0x17029810 {nsfilepath=/private/var/mobile/library/mobile documents/com~apple~clouddocs/download (2).jpeg, nsunderlyingerror=0x15ea9680 "the operation couldn’t completed. operation not permitted"}

i cant figure out.. can please me fix issue..

finally found answer myself.. refer link here

- (void)documentpicker:(uidocumentpickerviewcontroller *)controller didpickdocumentaturl:(nsurl *)url {     [url startaccessingsecurityscopedresource];     __block nsdata *pdfdata = nil;      nsfilecoordinator *coordinator = [[nsfilecoordinator alloc] init];     __block nserror *error;     [coordinator coordinatereadingitematurl:url options:0 error:&error byaccessor:^(nsurl *newurl) {         pdfdata = [nsdata datawithcontentsofurl:newurl];     }];     [url stopaccessingsecurityscopedresource]; }

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