In an attempt to create a workaround for centering an image in a UIScrollView and make it behave as Apple's Photos app does, I need to get the current zoom level and use the number to calculate the amount the image should be inset at each zoom level.
(Note: I am aware that some programmers are centering an image in a scrollview by centering the image in a UIView that is the same size as the scrollview. This does not give good results and I am trying to find out how apple made it work in the photos app.)
So, anyone know how to get the current zoom level of the content in a UIScrollView?
Yep I got your problem's answer. I think you should use this method in your scrollViewController Class.
- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale{
NSLog(@"Zoomscale %f",scale);
NSLog(@"Zoom End!");
}
In OS 3.x, there's a property called "zoomScale" that will give you what you want. In 2.x, I believe you can look directly at the contentView's transform to obtain this (but that is, of course, not 'official'.)
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