index logic error

[ChrisBeeson]

This seems to fix an issue with adding the wrong index to new left pages

while (leftEdge > minimumVisible) { leftEdge = [self placeNewViewOnLeft:leftEdge withIndex: (_min < 0 ? (_min=_count-1) : _min--)]; }

[natbro]

i'm not seeing it - can you give me an example? the way i'm reading it we always start with _min=0, meaning the initial left-/top-most view has been assigned index 0. if we then scroll the contents right/down and expose enough space we will hit this loop and want to assign a new index to the space. your proposed logic change would assign 0 to the next exposed item, because you post-decrement with _min--. if i change to your logic in the provided sample i end up with boxes displaying ... |119| | 0 | | 0 | | 1 | .... this is not to say there's not a case i'm not seeing where perhaps it doesn't get this right (maybe when a very large scroll happens and exposes many items at once or a whole screenful??) just that if you have an example or screenshots i'd be happy to take a look.

[ChrisBeeson]

Ah interesting...

In my situation I get away from the "join" of 119 | 0 quickly and have restricted the scroller to never scroll left across this join.

The error I found was when I was scrolling pages bigger than the scrollView. Scrolling right right right, and then left - would generate repeat left pages and screw everything up.