#import "YLDoubleViewController.h"

UIViewController *oneVC = [[UIViewController alloc] init];
oneVC.view.backgroundColor = [UIColor grayColor];
UIViewController *twoVC = [[UIViewController alloc] init];
twoVC.view.backgroundColor = [UIColor purpleColor];

YLDoubleViewController *view = [[YLDoubleViewController alloc] initWithRightVC:oneVC andLeftVC:twoVC];
[self presentViewController:view animated:YES completion:nil];