UIWindow中的iOS UIScrollView

Question

I currently am making an iOS project in which I have a UIScrollView as a direct subview of a UIWindow (using [window addSubview:scrollView]; ). The window's frame and its content are being set properly, and the contentSize is set to be bigger than the window's frame. When I try to scroll the UIScrollView, it doesn't scroll at all. Both scrollEnabled and pagingEnabled are set to YES , but the scrollview doesn't scroll, which leads me to believe that the touch/scroll events are not even being received by the scroll view. The window has a UITapGestureRecognizer added to it if it makes any difference. Do I need to somehow forward the swipe events to the UIScrollView , or is there a different reason that it's not scrolling?

EDIT: Here's some code.

   float count=ceil([self.msgArray count]/2); //msgArray has length of 3+, NSLog()'d and confirmed.
   float contentHeight=97.5 * count;
   [dataScrollView setContentSize:CGSizeMake(320,contentHeight)];
   dataScrollView.userInteractionEnabled=YES;
   dataScrollView.pagingEnabled=YES;
   dataScrollView.scrollEnabled=YES;
   dataScrollView.clipsToBounds=YES; //Have also tried with this set to NO, or not set at all.
   //Add subviews to dataScrollView.

EDIT: Here's some more info. contentHeight is 195.00 when logged. I've removed the delegate method and I am back to using direct subviews of the scroll view. The window's height is 97.50.

EDIT: I've also removed the UITapGestureRecognizer from the UIWindow, but the scrollview still doesn't scroll.

Answer 1

Ah, the UITapGestureRecognizer ! This might be a bug that took me hours to figure out in my own project. Is its cancelsTouchesInView property set to NO like it should be? ( YES is the default... It can really throw you off if you're not expecting it.)

Answer 2

Just log the scrollview bounds width/height. The content height you are setting should be greater than the scrollview height. If its more then the scroll view automatically enables its scrolling.