iphone - how to put the JSON data into UICollectionView in ios -

i try images json url , place on uicollectionview

but don't how images json

 #import "viewcontroller.h"     #import "customcell.h"     @interface viewcontroller ()     {          nsarray *arrayofimages;         nsarray *arrayofdescriptions;         nsmutablearray *json;         nsstring *img;         nsmutabledata *webdata;          nsurlconnection *connection;     }     @end       @implementation viewcontroller      - (void)viewdidload     {         /**/         [[self mycollectionview]setdatasource:self];         [[self mycollectionview]setdelegate:self];          nsstring *urlstring=[nsstring stringwithformat:@"http://ielmo.xtreemhost.com/array.php"];           nsurl * url=[nsurl urlwithstring:urlstring];         nsurlrequest *req=[nsurlrequest requestwithurl:url];          connection=[nsurlconnection connectionwithrequest:req delegate:self];          if(connection)         {             nslog(@"connected");              webdata=[[nsmutabledata alloc]init];         }   [super viewdidload];  // additional setup after loading view, typically nib. } -(void)connection:(nsurlconnection *)connection didreceiveresponse:(nsurlresponse *)response {     [webdata setlength:0];  } -(void)connection:(nsurlconnection *)connection didreceivedata:(nsdata *)data {     [webdata appenddata:data];  } -(void)connection:(nsurlconnection *)connection didfailwitherror:(nserror *)error {     nslog(@"error is"); } -(void)connectiondidfinishloading:(nsurlconnection *)connection {        nsmutablearray *al=[nsjsonserialization jsonobjectwithdata:webdata options:0 error:nil];      nslog(@"all array isn %@",al);         nsdata* mydata = [nskeyedarchiver archiveddatawithrootobject:al];      nslog(@"data data%@",mydata);     nserror *error;      json=(nsmutablearray*)[nsjsonserialization jsonobjectwithdata:mydata options:kniloptions error:&error];     nslog(@"data arrayjson%@",json);      for(int i=0;i<json.count;i++)     {         img=[nsstring stringwithformat:@"%@",[json objectatindex:i]];         nslog(@"data arrayimage%@",img);     }      nsurl *urlone=[nsurl urlwithstring:img];     nslog(@"data arrayurl%@",urlone);     nsdata *newdata=[nsdata datawithcontentsofurl:urlone];      uiimageview *imaegview=[[uiimageview alloc]initwithframe:cgrectmake(38,0, 76, 96)];       [imaegview setimage:[uiimage imagewithdata:newdata]];      [self.mycollectionview addsubview:imaegview];       [[self mycollectionview]reloaddata];  } -(nsinteger)numberofsectionsincollectionview:(uicollectionview *)collectionview{      return  1; }   -(nsinteger)collectionview:(uicollectionview *)collectionview numberofitemsinsection:(nsinteger)section{      return  [arrayofimages count]; }   -(uicollectionviewcell *)collectionview:(uicollectionview *)collectionview cellforitematindexpath:(nsindexpath *)indexpath{ static nsstring *cellidentifier=@"cell";     customcell *cell=[ collectionview dequeuereusablecellwithreuseidentifier:cellidentifier forindexpath:indexpath];     [[cell myimage]setimage:[uiimage imagenamed:[arrayofimages objectatindex:indexpath.item]]];    // [[cell mylabel]settext:[arrayofdescriptions objectatindex:indexpath.item]];     return cell; }   - (void)didreceivememorywarning {     [super didreceivememorywarning];     // dispose of resources can recreated. }  @end 

i tried code in output image not display in collectionview please tell me how retrieve images json my-collection view

as json contains image.

it must encoded while transmitting in base64. need decode form nsdata.

once have converted nsdata can form uiimage it, after can show image on collection view.