ios - UiCollectionViewCell random images flipping -

i have been looking around here answer no success ill make try self.

im trying make uicollectionview different cells containing images + animation cells.

i want cells "random flipping" images (5 different images)

uiviewanimationoptiontransitionflipfromleft

in loop 5-6 sec delay.

the animation have moment this:

- (void)collectionview:(uicollectionview *)collectionview didselectitematindexpath:(nsindexpath *)indexpath {      uicollectionviewcell *cell = [collectionview cellforitematindexpath:indexpath];     [cell.superview bringsubviewtofront:collectionview];      [uiview transitionwithview:cell                       duration:1.0                       options:uiviewanimationoptiontransitionflipfromleft                       animations:^{                       [uicollectionviewcell commitanimations];                       cell.transform = cgaffinetransformmakerotation(0.0);                     }                     completion:^(bool finished) {}];       } 

i know shouldn't use didselectitematindexpath, used see if animation right.

if check @ video u can see mean, on windows 8 phone. youtube video

ok, interested on idea prototyped code. needs tailored needs can start. firstly, need subclass uicollectionviewcell in order connect iboutlet imageview inside cell. can reference code snippet started.

- (void)viewdidload {   [super viewdidload];   self.imagelist = @[@"img1.png", @"img2.png", @"img3.png", @"img4.png"];   }  // assumes images inside bundle.  - (void)viewdidappear:(bool)animated {   [super viewdidappear:animated];    [nstimer scheduledtimerwithtimeinterval:4.0                                    target:self                                  selector:@selector(updatecells:)                                  userinfo:nil                                   repeats:yes];  }  - (void)updatecells:(nstimer *)timer {   nsarray *visibleindexpaths = [self.collectionview indexpathsforvisibleitems];   (nsindexpath *indexpath in visibleindexpaths) {     subclasscollectionviewcell *cell = (subclasscollectionviewcell *)[self.collectionview cellforitematindexpath:indexpath];     [uiview transitionwithview:cell                       duration:1.0f                        options:uiviewanimationoptiontransitionflipfromleft                     animations:^{                       cell.imageview.image = [self randomimage];                     } completion:nil];   } }  - (nsinteger)collectionview:(uicollectionview *)collectionview numberofitemsinsection:(nsinteger)section {   return 1; }  - (uicollectionviewcell *)collectionview:(uicollectionview *)collectionview cellforitematindexpath:(nsindexpath *)indexpath {   uicollectionviewcell *cell = [collectionview dequeuereusablecellwithreuseidentifier:@"cell" forindexpath:indexpath];    return cell; }  - (uiimage *)randomimage {   nsinteger randomnumber = arc4random() % [self.imagelist count];   return [uiimage imagenamed:[self.imagelist objectatindex:randomnumber]]; } 

update:

if want 1 cell @ time randomly flip, need take out for loop in updatecells method. instead, try this:

- (void)updatecells:(nstimer *)timer {   nsarray *visibleindexpaths = [self.collectionview indexpathsforvisibleitems];   nsinteger randomindex = arc4random() % [visibleindexpaths count];   nsindexpath *randomindexpath = [nsindexpath indexpathforitem:randomindex insection:0];    subclasscollectionviewcell *cell = (subclasscollectionviewcell *)[self.collectionview cellforitematindexpath:indexpath];    [uiview transitionwithview:cell                     duration:1.0f                      options:uiviewanimationoptiontransitionflipfromleft                   animations:^{                     cell.imageview.image = [self randomimage];                   }                    completion:nil   ]; }