1/判断滚动视图左右滚动
{
CGFloat startContentOffsetX;//滚动开始的坐标
CGFloat willEndContentOffsetX; //滚动即将停止的坐标
CGFloat endContentOffsetX;//滚动结束的坐标}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
myPC.currentPage = scrollView.contentOffset.x / scrollView.frame.size.width;
currNum = (int)myPC.currentPage;
}
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
startContentOffsetX = scrollView.contentOffset.x;
[self stopTimer];
}
- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset{ //将要停止前的坐标
willEndContentOffsetX = scrollView.contentOffset.x;
}
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
endContentOffsetX = scrollView.contentOffset.x;
if (endContentOffsetX < willEndContentOffsetX && willEndContentOffsetX < startContentOffsetX) { //画面从右往左移动，前一页
isNext = NO;
} else if (endContentOffsetX > willEndContentOffsetX && willEndContentOffsetX > startContentOffsetX) {//画面从左往右移动，后一页
isNext = YES;
}
[self starTimer];
}
2/判断上下滚动视图上下滚动
float lastContentOffset;
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
lastContentOffset = scrollView.contentOffset.y;
} - (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView{
if (lastContentOffset < scrollView.contentOffset.y) {
NSLog(@"向上滚动");
}else{
NSLog(@"向下滚动");
}
}