objective c - Error when adding Supplementary Header View to UICollectionView -


i getting following error implementing supplementary header view 

terminating app due uncaught exception 'nsinternalinconsistencyexception', reason: 'no uicollectionviewlayoutattributes instance -layoutattributesforsupplementaryelementofkind: headerview @ path <nsindexpath: 0x9e82a40> {length = 2, path = 0 - 0}'

this code creating header view

- (uicollectionreusableview *)collectionview:(uicollectionview *)collectionview viewforsupplementaryelementofkind:(nsstring *)kind atindexpath:(nsindexpath *)indexpath {     static nsstring * headeridentifier = @"headerview";     uicollectionreusableview *header = [collectionview dequeuereusablesupplementaryviewofkind:headeridentifier withreuseidentifier:uicollectionelementkindsectionheader forindexpath:indexpath];     return header; }

the error happens in dequeuereusablesupplementaryviewofkind method.

i have added these 2 lines in initwithcoder of collection view controller

uinib *headernib = [uinib nibwithnibname:@"mtcollectionheaderview" bundle:nil]; [self.collectionview registernib:headernib forsupplementaryviewofkind:uicollectionelementkindsectionheader withreuseidentifier:@"headerview"];

so have reference ui element. cannot find anyway set layout on header.

i tried adding same collection view controller never hit code confirmed putting debugger there

- (uicollectionviewlayoutattributes *)layoutattributesforsupplementaryelementofkind:(nsstring *)kind atindexpath:(nsindexpath *)indexpath {     return [self.collectionviewlayout layoutattributesfordecorationviewofkind:kind atindexpath:indexpath]; }

has seen issue , how did resolve it. using xcode 5 developer preview 5 , developing ios7

i believe passing headeridentifier kind of supplementary view , kind constant header identifier. try switching them shown in line of code in collectionview:viewforsupplementaryelementofkind:atindexpath: method:

uicollectionreusableview *header = [collectionview dequeuereusablesupplementaryviewofkind:uicollectionelementkindsectionheader withreuseidentifier:headeridentifier forindexpath:indexpath];

i not think need implementation of layoutattributesforsupplementaryelementofkind:atindexpath:, swap above line of code in , see if works.


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