判断scrollView、tableView滚动方向(上或下)

2016-12-12  本文已影响347人  jan_yu

判断scrollView、tableView滚动方向(上或下)

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");}
}
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