ios - UICollectionView cell layout is out of the collection view's bounds -


i have uicollectionview lays cells out using flow layout. vertically scrolling.

it fills 320x480 screen , displays custom uicollectionviewcell 96*96 - size set in interface builder , delegate not implement methods set item size on per item basis.

there insets on left , right 10 px each , minimum spacing set 6px.

what happens therefore 3 cells per horizontal line.

<-10-><----96----><-6-><----96----><-6-><----96----><-10-> = 320.

the problem having lays 4 cells on 1 line! 4th cell off screen. lays 2 cells out on following line compensate. whole point of flow layout is line-breaking layout should not put off-screen!

i have attached picture:

enter image description here

please note on second row there fourth item off screen.

i have no idea causing it. cells dynamically filled data size constant. cells on other rows fitting fine there no reason why on rows should happen.

this error occurs @ different places each time collection view updated. ie. might happen @ row 2 once update happens might happen @ row 10 , on.

the collection view being updated timer. timer calls function processes data, , using dispatch_async (onto main queue) array containing backing data updated , [collectionview reloaddata] called. haven't updated collection view thread apart main thread. backing array updated on main queue , in function; not anywhere else.

please give me suggestions might going wrong.

thanks

i have fixed adding [_collectionviewflowlayout invalidatelayout] in scrollviewdidscroll: delegate methods.

https://github.com/f33chobits/fscalendar/issues/21


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