-(void)scrollByTimer
{
CGPoint oldoffset = cellScrollView.contentOffset;
CGPoint newOffset = CGPointMake(cellScrollView.contentOffset.x+320, cellScrollView.contentOffset.y);
if (oldoffset.x >= 320*(cellData.count-1)) {
CGPoint beginPoint = CGPointMake(0, cellScrollView.contentOffset.y);
[cellScrollView setContentOffset:beginPoint animated:YES];
}else{
[cellScrollView setContentOffset:newOffset animated:YES];
}
}
-(void)scheduleTimer
{
[NSTimer scheduledTimerWithTimeInterval:3 target:self selector:@selector(scrollByTimer) userInfo:Nil repeats:YES];
}
原文：http://www.cnblogs.com/guligei/p/3924074.html