UIScrollView scrollRectToVisible
- (void)scrollRectToVisible:(CGRect)rect animated:(BOOL)animated
Parameters of [UIScrollView scrollRectToVisible]
rect
A rectangle defining an area of the content view.
animated
YES if the scrolling should be animated, NO if it should be immediate.
Discussion of [UIScrollView scrollRectToVisible]
This method scrolls the content view so that the area defined by rect is just visible inside the scroll view. If the area is already visible, the method does nothing.
UIScrollView scrollRectToVisible example.
int page = sidePager.currentPage + 1;
CGRect frame = scroller.frame;
frame.origin.x = frame.size.width * page;
if (0 != UpAndDownPager.currentPage) {
frame.origin.y = frame.size.height * (UpAndDownPager.currentPage + 1 );
}
scroller scrollRectToVisible:frame animated:YES];
sidePager.currentPage = sidePager.currentPage + 1;
CGRect frame = scroller.frame;
frame.origin.x = frame.size.width * page;
if (0 != UpAndDownPager.currentPage) {
frame.origin.y = frame.size.height * (UpAndDownPager.currentPage + 1 );
}
scroller scrollRectToVisible:frame animated:YES];
sidePager.currentPage = sidePager.currentPage + 1;
Example of [UIScrollView scrollRectToVisible].
[UIView animateWithDuration:3
delay:0
options:UIViewAnimationOptionCurveEaseInOut
animations:^{ [scrollView scrollRectToVisible:frame animated:NO]; }
completion:NULL];
delay:0
options:UIViewAnimationOptionCurveEaseInOut
animations:^{ [scrollView scrollRectToVisible:frame animated:NO]; }
completion:NULL];
UIScrollView scrollRectToVisible example.
CGRect rectBottom = CGRectZero;
rectBottom.size = myUIScrollView.frame.size;
rectBottom.origin.y = myUIScrollView.contentSize.height - rectBottom.size.height;
rectBottom.origin.x = 0;
[myUIScrollView scrollRectToVisible:r animated:YES];
rectBottom.size = myUIScrollView.frame.size;
rectBottom.origin.y = myUIScrollView.contentSize.height - rectBottom.size.height;
rectBottom.origin.x = 0;
[myUIScrollView scrollRectToVisible:r animated:YES];