objective c - What other code is needed to get the photos from Instagram's API to show up? -


i'm new programming , i'm trying create photo app ios development class displays users pics based on specific hashtag, not having luck. have api instagram along client_id. when run it, there aren't errors screen black. else needed me images showing up? have far. in advance!

@interface viewcontroller () <uicollectionviewdatasource, uicollectionviewdelegate>  @property (weak, nonatomic) iboutlet uicollectionview *collectionview;  @property nsmutablearray *picfeed;  @end  @implementation viewcontroller  - (void)viewdidload {  [super viewdidload];     nsurl *url = [nsurl urlwithstring:@"https://api.instagram.com/v1/tags/chicago/media/recent?count=100&client_id=d3eed38ae896497e9e58298dd793333b"];     nsurlrequest *request = [nsurlrequest requestwithurl:url];     [nsurlconnection sendasynchronousrequest:request queue:[nsoperationqueue mainqueue] completionhandler:^(nsurlresponse *response,  nsdata *data, nserror *connectionerror) {         self.picfeed = [nsjsonserialization jsonobjectwithdata:data options:nsjsonreadingallowfragments error:&connectionerror];          [self.collectionview reloaddata];     }]; }  -(nsinteger)collectionview:(uicollectionview *)collectionview numberofitemsinsection:(nsinteger)section {     return self.picfeed.count; }  -(uicollectionviewcell *)collectionview:(uicollectionview *)collectionview cellforitematindexpath:(nsindexpath *)indexpath {     uicollectionviewcell *cell = [collectionview dequeuereusablecellwithreuseidentifier:@"cellid" forindexpath:indexpath];     return cell; }


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