Automatic scrolling scrollview - iphone

Question

I have a question. I want to display the user some content in a UIScrollView. I want to autoscroll the UIScrollView fast from bottom to top (like in the apple stores iPad). I tried to use DDAutoscrollview (If someone knows), but it doesn't work for me. Do have someone a solution for me to autoscroll a UIScrollView? Any code snippets would be nice.
.h
#interface Interface1 : UIViewController {
IBOutlet UIScrollView *scroller;
IBOutlet UILabel *warnung;
}
#property (nonatomic, retain) IBOutlet UIScrollView* scrollView;
.m
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
CGPoint bottomOffset = CGPointMake(self.scrollView.contentOffset.x,
self.scrollView.contentSize.height -
self.scrollView.bounds.size.height);
[self.scrollView setContentOffset:bottomOffset animated:NO];
CGPoint newOffset = self.scrollView.contentOffset;
newOffset.y = 0;
[self.scrollView setContentOffset:newOffset animated:YES];
}
- (void)viewDidLoad {
[scroller setScrollEnabled:YES];
[scroller setContentSize:CGSizeMake(320, 420)];
[super viewDidLoad];
}
Thanks.
> THUMBS UP FOR THE AWNSER THAT WAS GIVEN BY TOBI!!!

Answer 1

Just use setContentOffset:animated:
UIScrollView *scrollView = ...;
CGPoint newOffset = scrollView.contentOffset;
newOffset.y = 0;
[scrollView setContentOffset:newOffset animated:YES];
Edit:
To use it like some kind of start animation you could do this in the scrollView's view controller:
- (void)viewDidLoad
{
[super viewDidLoad];
// ...
CGPoint bottomOffset = CGPointMake(self.scrollView.contentOffset.x, self.scrollView.contentSize.height - self.scrollView.bounds.size.height);
[self.scrollView setContentOffset:bottomOffset animated:NO];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
CGPoint newOffset = self.scrollView.contentOffset;
newOffset.y = 0;
[self.scrollView setContentOffset:newOffset animated:YES];
}
Edit 2 / 3:
To make the scrolling happen slower, use this:
- (void)viewDidLoad
{
[super viewDidLoad];
// ...
CGPoint bottomOffset = CGPointMake(self.scrollView.contentOffset.x, self.scrollView.contentSize.height - self.scrollView.bounds.size.height);
[self.scrollView setContentOffset:bottomOffset animated:NO];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
float scrollDuration = 4.0;
[UIView animateWithDuration:scrollDuration animations:^{
self.scrollView.contentOffset = CGPointMake(self.scrollView.contentOffset.x, 0);
}];
}