CODEWITHSUNDEEP
iphoneobjective-c
spentak
spentak

Reputation: 4727

iOS How to get the content offset of a view inside a scrollview

Lets say I add 10 views to a scrollview. I obviously give them a rect inside of the scrollview. Is there any way to figure out what each item's offset is in the scrollview?

I'm guessing that probably isn't applicable here. What I need in essence is, "If this item is at this content offset in the scrollview (meaning visible to the user in a certain area of the scrollview), then do this".

Upvotes: 0

Views: 2986

Answers (2)

bandejapaisa
bandejapaisa

Reputation: 26952

You might want to find the current scroll position by looking at UIScrollView contentOffset

The point at which the origin of the content view is offset from the origin of the scroll view.

With the contentOffset, you can then compare this with the frame x and y coordinates of the content views and determine if they are onscreen or not.

Upvotes: 0

Costique
Costique

Reputation: 23722

Each view's frame is expressed in its superview coordinate system (bounds). That is, in your case for each view its content offset is CGRectGetMinY(view.frame).

Upvotes: 1

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