uicollectionview select an item immediately after reloaddata?

Question

After calling -[UICollectionView reloadData] it takes some time for cells to be displayed, so selecting an item immediately after calling reloadData do

Answer 1

Don't use reloadData

Use - (void)performBatchUpdates:(void (^)(void))updates completion:(void (^)(BOOL finished))completion instead. The completion block is executed after animations for cell insertion/deletion etc. have completed. You can put the call to reloadData in the (void (^)(void))updates block