BAGPagingScrollView

Introduction

BAGPagingScrollView does exactly what it sounds like it does. It's a UIView that correctly implements the a UIScrollView for paging over many many UIViews. It also implements a UIPageControl.

I probably pushed this a little pre-maturely, currently it only acts as a carousal, warping back to the beginning after it comes to the last view. I'm in the midst of finishing up my masters degree, but when I get the time I'll finish up the implementation (see STDs bellow).

Getting Started

1. Clone or otherwise copy BAGPagingScrollView.h and BAGPagingScrollView.m into your project.

2. Create a BAGPagingScrollView either in Interface Builder or programiticly as you would any other UIView.

3. Set the dataSource of the BAGPagingScrollView you just created.

4. In the dataSource implement:

   • -(NSInterger)numberOfPagesForScrollView:(BAGPagingScrollView*)pagingScrollView;
   • -(UIView*)pagingScrollView:(BAGPagingScrollView*)pagingScrollView viewForPageIndex:(int)index;

   (See the BAGPagingScrollViewDataSource protocol in BAGPagingScrollView.h)

5. Smile!

Notes

• You even thought -(NSInterger)numberOfPagesForScrollView:(BAGPagingScrollView)pagingScrollView; is listed as optional, you do need to implement it in your delegate, or things will crash.
• You need to present at least three views or things will not work as expected
• These things will be fixed when I (or maybe you) have the time. See the STDs below.

STDs (Stuff to Do)

• Make it so that an infinite number of pages can be displayed. This will be the default when the delegate does not implement the numberOfPagesForPaginScrollView: method.
• Make it so that the warping feature is optional. My thought is to have this be accomplished by having the delegate return a negative number to the numberOfPagesForPagingScrollView: delegate method.
• Fix bugs when less three UIViews are required to be presented
• Implement cache similar to UITableView the uses a similar -(UIView*)dequeueReusableViewWithIdentifier:(NSString *)identifier;