ECSlidingViewController是左右抽屉的三方库，可用cocoapods导入。
1、#import "ECSlidingViewController.h"
2、SlideMenuViewController *slideMenu=[[SlideMenuViewController alloc]init];//主界面
LeftMenuViewController *leftMenu=[[LeftMenuViewController alloc]init];//左界面
RightMenuViewController *rightMenu=[[RightMenuViewController alloc]init];//右界面
ECSlidingViewController *slidingVC=[[ECSlidingViewController alloc]init];
[slidingVC setTopViewController:slideMenu];//设置主界面
slidingVC.underLeftViewController=leftMenu;//设置左界面
slidingVC.underRightViewController=rightMenu;//设置右界面
slideMenu.slidingVC=slidingVC;
leftMenu.slidingVC=slidingVC;
leftMenu.view.layer.borderWidth = 20;
leftMenu.view.layer.backgroundColor = [UIColor colorWithWhite:0.9 alpha:1.0].CGColor;
leftMenu.view.layer.borderColor = [UIColor colorWithWhite:0.8 alpha:1.0].CGColor;
leftMenu.edgesForExtendedLayout = UIRectEdgeTop | UIRectEdgeBottom | UIRectEdgeLeft;
rightMenu.view.layer.borderWidth = 20;
rightMenu.view.layer.backgroundColor = [UIColor colorWithWhite:0.9 alpha:1.0].CGColor;
rightMenu.view.layer.borderColor = [UIColor colorWithWhite:0.8 alpha:1.0].CGColor;
rightMenu.edgesForExtendedLayout = UIRectEdgeTop | UIRectEdgeBottom | UIRectEdgeRight;
[nav.view addGestureRecognizer:slidingVC.panGesture];//添加左滑右滑手势
[nav.view addGestureRecognizer:slidingVC.resetTapGesture];//添加出现左/右界面时点击主界面返回主界面的手势
slidingVC.anchorRightPeekAmount = 100.0;//右边偏移量
slidingVC.anchorLeftRevealAmount = 250.0;//左边偏移量
delegate.window.rootViewController=slidingVC;//设置为window的rootViewController
