//分割线左定格
_cell.preservesSuperviewLayoutMargins = NO;
_cell.separatorInset = UIEdgeInsetsZero;
_cell.layoutMargins = UIEdgeInsetsZero;
或者
self.separatorInset = UIEdgeInsetsMake(0, 0, 0, 0);
//分割线左定格
_cell.preservesSuperviewLayoutMargins = NO;
_cell.separatorInset = UIEdgeInsetsZero;
_cell.layoutMargins = UIEdgeInsetsZero;
或者
self.separatorInset = UIEdgeInsetsMake(0, 0, 0, 0);