2016.6.27
在table的didSelectRowAtIndexPath方法中
AboutViewCell*cell = [tableViewcellForRowAtIndexPath:indexPath];
NSIndexPath*index = [NSIndexPathindexPathForRow:6inSection:0];
QRCodeCell*cell = [self.schoolTablecellForRowAtIndexPath:index];
row : 第几个cell section: 第几个区