Cell横向显示的方法:
//viewDidload(将cell横置)
#define M_PI 3.14159265358979323846264338327950288
self.tableview.transform = CGAffineTransformMakeRotation(-M_PI / 2);
//Cell显示行内容(将cell居中)
cell.contentView.transform = CGAffineTransformMakeRotation(M_PI / 2);
//cell高度设置(heightForRow方法)
return self.frame.size.width;
