zoom entire UICollectionView

Question

I have an iPad App where I\'m using a UICollectionView and each UICollectionViewCell contains just a single UIImage. Currently I\'m displaying per 9 UIImages (3 rows * 3 col

Answer 1

Sorry for my 2 cents question, I have found the solution, very simple.

In my PinchGesture callback I have just done the following:

void (^animateChangeWidth)() = ^() {
    _theFlowLayout.itemSize = cellSize;
};

[UIView transitionWithView:self.theCollectionView 
                  duration:0.1f 
                   options:UIViewAnimationOptionCurveLinear 
                animations:animateChangeWidth 
                completion:nil];

All cells of my UICollectionView are successfully changed and with a nice transition.