iphone - AQGridView cell need to be tapped twice to trigger didSelectItem -

I am using AQGridView to display a TableView in the grid format.

I have a problem, randomly, gridclass to tape twice to trigger the

  didSelectItem   
 method is needed.  
 First tap the cell highlights itself, but no one is selected. The method is called on the second tap.  
 Any thoughts?   
 
 
 The problem probably only occurs when you search for the last selected gridclass, then you can see your  The following details will be added in the Viewed App :  
  [self.gridView unselectItemAtIndex: self.gridView.indexOfSelectedItem Animated: Yes];