Reputation: 8977
I have a UIScrollView
in which I've set the contentSize
to the size of the screen initially. So does this mean that if I have an UIImageView
inside the scroll view then it can't zoom bigger than the contentSize
I've set?
Because I initially have a UIScrollView
with a contentSize
of the phone's dimension and when I zoom into an image, it does it just fine (I can see the contentSize
grows bigger as I zoom in) but when I adjust it manually it can't. Why is this?
I think when I initially initialize the UIScrollView
frame, the content size will be set to the frame's size, however it can grow dynamically as I zoom in. However when I try to set the contentSize
, it seems that now it's fixed. The reason why I am asking this is because I have a UIImageView
inside a UIScrollView
, when I zoom in on the image and I rotate the image, I want the contentSize
to reset. Question is how do I reset this?
Upvotes: 3
Views: 4812
Reputation: 34912
The zoom level is set by the zoomScale
property of the UIScrollView
. Its maximum and minimum is set by maximumZoomScale
and minimumZoomScale
respectively.
If you're trying to set the zoom by setting the contentSize
then you're doing it wrong. The contentSize
should be set as if the zoom scale was 1.0
and then you'd just set the zoomScale
property to be what you wanted so for example 2.0
if you wanted it zoomed in to 200%.
You're probably seeing contentSize
change as you zoom because I think the scroll view reports it scaled to the current zoom scale.
Upvotes: 1