ios - Changing the state of the CollectionView Cell -

- (uicollectionviewcell *)collectionview:(uicollectionview *)collectionview cellforitematindexpath:(nsindexpath *)indexpath{      //nslog(@"enter category cell");      categoryviewcell* cell = (categoryviewcell*)[collectionview dequeuereusablecellwithreuseidentifier:cellidentifier forindexpath:indexpath];      [cell.imgcat setimage:[uiimage imagenamed:[categoryimages objectatindex:indexpath.row]]];     [cell.labelcatname settext:[[nsstring stringwithformat:@"%@", [catname objectatindex:indexpath.row]] capitalizedstring]];     if([categories[[nsstring stringwithformat:@"%d",(int)indexpath.row]] isequal:@yes]) {         //nslog(@"set border");          cell.layer.bordercolor = [uicolor redcolor].cgcolor;         cell.layer.borderwidth = 3;      }     return cell; }  -(void)collectionview:(uicollectionview *)collectionview didselectitematindexpath:(nsindexpath *)indexpath {     categoryviewcell* cell = (categoryviewcell*)[collectionview cellforitematindexpath:indexpath];     cell.layer.borderwidth = 3;     cell.layer.bordercolor = [uicolor redcolor].cgcolor;      //nslog(@"%i", (int)indexpath.item);     categories[[nsstring stringwithformat:@"%i", (int)indexpath.item]] = @yes;    }  -(void) collectionview:(uicollectionview *)collectionview diddeselectitematindexpath:(nsindexpath *)indexpath {     categoryviewcell* cell = (categoryviewcell*)[collectionview cellforitematindexpath:indexpath];     cell.layer.bordercolor = [uicolor clearcolor].cgcolor;      categories[[nsstring stringwithformat:@"%i", (int)indexpath.item]] = @no; } 

the problem: above code show collectionview cells selected @ default. however, states of these selected cells not selected. have tap twice deselect them because first tap select them, , second tap deselect them.

i have tried set selected cell doesn't work either. cell have red border whenever user selected cell , clearcolor when user deselect cell.

i tried:

cell.selected = yes; 

but permanently gives collectionview cell red border.

and add in cellforitematindexpath method still doesn't trick.

[self collectionview:collectionview didselectitematindexpath:indexpath]; 

categoryviewcell.m

-(void) setselected:(bool)selected animated:(bool)animated {     [super setselected:selected];     //nslog(@"pass select animated");     if (selected) {         self.flaghighlight = no;         self.selected = no;         self.layer.bordercolor = [uicolor clearcolor].cgcolor;         self.layer.borderwidth = 3;     } else {         self.flaghighlight = yes;         self.selected = yes;         self.layer.bordercolor = [uicolor redcolor].cgcolor;         self.layer.borderwidth = 3;     } } 

how pre-select cell when view loaded programmatically? or better change state of cell being selected.

thanks in advance.

ending answering own problem.

so use [collectionview selectitematindexpath:indexpath animated:no scrollposition:uicollectionviewscrollpositionnone];

in cellforitematindexpath.

serve purpose nicely.