UIScrollView Direction RTL for Right to Left Languages

Question

Can we change the behavior of UIScrollView that it scrolls RTL content in it\'s reverse mode.

Answer 1

I m not sure if I understand the question correctly but I take it like this: You want to have a (let's say) horizontal UIScrollView where you can add elements from right to left and when the contents exceed the scroll view frame you want to be able to scroll to the left rather than to the right in order to see the last elements.

In this case you can do this. For every new element calculate the total width you need and set it as contentOffset:

[scrollView setContentSize:CGSizeMake(self.childView.frame.size.width,
                                      scrollView.frame.size.height)]; 

Above I have a childView where the elements are added. It is placed at the right most position inside the scrollView minus 1 element width. Every time an element is added call:

[scrollView setContentOffset:CGPointMake(scrollView.contentOffset.x + kElementWidth,0.0)];

which will offset everything to the left. Then:

self.videoQueueCollectionView.center = CGPointMake(self.childView.center.x + kElementWidth,
                                                   self.childView.center.y);

That will snap eveything back to where it was BUT with the contentOffset set to the left. Which means that you can now scroll to the right.