UIScrollView pagingEnabled下，判断左移还是右移！

//将要开始拖拽，手指已经放在view上并准备拖动的那一刻

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{    //拖动前的起始坐标

    startContentOffsetX = scrollView.contentOffset.x;

}

- (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

    } else if (endContentOffsetX > willEndContentOffsetX && willEndContentOffsetX > startContentOffsetX) {//画面从左往右移动，后一页

    }

}

如上可判断ScrollView是左移了还是右移了

转载地址：http://my.oschina.net/alexcom/blog/167240