cell是否可见，cell是否划出屏幕

Cell是否划出屏幕
是否可见
判断是否可见
是否在屏幕上

///<划出屏幕K线缩略图要隐藏
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
    if (self.didClickedIndexPath) {
        CGRect recttIntableview = [self.tableView rectForRowAtIndexPath:self.didClickedIndexPath];
        //当前cell在屏幕中的坐标值
        CGRect rectInSuperView = [self.tableView convertRect:recttIntableview toView:self.view];
        if ( rectInSuperView.origin.y > self.view.height) {
            //划出了屏幕下方
            NSLog(@"test -- 划出了屏幕下方");
            //[HBMarketQuickTradingView shareManager].hidden = YES;
        } else if (rectInSuperView.origin.y + rectInSuperView.size.height < 0){
            //划出了屏幕上方
            NSLog(@"test -- 划出了屏幕上方");
            //[HBMarketQuickTradingView shareManager].hidden = YES;
        } else {
            NSLog(@"test -- 还能看到");
            //[HBMarketQuickTradingView shareManager].hidden = NO;
        }
    }
}