1、开源库，利用pod引入第三方库MMDrawerController：

　　在建立的Podfile中加入代码：

platform :ios, '7.0'pod 'ReactiveCocoa'pod 'MMDrawerController'pod 'Toast', '~> 3.0'pod 'CocoaSecurity'

　　其中MMDrawerController就是开源的侧边栏库

2、在appdelegate中加入以下代码

　　首先加入头文件

#import "AppDelegate.h"#import 
     
      #import "LeftViewController.h"#import "ViewController.h"#import "RightViewController.h"
     

　　新建属性

@property(nonatomic,assign) BOOL ifNavFromLeftMenu;@property(nonatomic,assign) BOOL isNavFinished;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {        ViewController *vc = [[ViewController alloc] init];    LeftViewController *leftVc = [[LeftViewController alloc] init];    RightViewController *right = [[RightViewController alloc] init];    UINavigationController *center     = [[UINavigationController alloc] initWithRootViewController:vc];    center.delegate = (id
     
      )self;        MMDrawerController * drawerController = [[MMDrawerController alloc]                                             initWithCenterViewController:center                                             leftDrawerViewController:leftVc                                             rightDrawerViewController:right];    [drawerController setShowsShadow:YES];    drawerController.closeDrawerGestureModeMask = MMCloseDrawerGestureModeAll;    [drawerController setRestorationIdentifier:@"MMDrawer"];    [drawerController setMaximumLeftDrawerWidth:270.0];        self.window.rootViewController = drawerController;        return YES;}
     

　　在加入左右侧边栏实现的代理方法

-(void)navigateToView:(UIViewController*)controler ifLeft:(BOOL)ifLeft animate:(BOOL)animate{    MMDrawerController*menuVctler = (MMDrawerController *)self.window.rootViewController;    UINavigationController* nav = (UINavigationController*)menuVctler.centerViewController;    if (nav) {        nav.delegate = (id
     
      )self;        self.ifNavFromLeftMenu = ifLeft;        if (ifLeft) {            [nav pushViewController:controler animated:NO];            [menuVctler closeDrawerAnimated:YES completion:^(BOOL finished) {                            }];        }else{            [nav pushViewController:controler animated:animate];        }    }}#pragma mark - UINavigationControllerDelegate- (void)navigationController:(UINavigationController *)navigationController      willShowViewController:(UIViewController *)viewController                    animated:(BOOL)animated{    if (!self.ifNavFromLeftMenu) {        return;    }        UIViewController* rootVc = [navigationController.viewControllers objectAtIndex:0];    if([viewController isEqual:rootVc]){        MMDrawerController *menuVctler = (MMDrawerController *)self.window.rootViewController;        __weak UINavigationController*nav = navigationController;        __weak typeof(self)wself = self;        [menuVctler openDrawerSide:MMDrawerSideLeft animated:YES completion:^(BOOL finished) {            nav.delegate = nil;            self.ifNavFromLeftMenu = NO;                        double delayInSeconds = 0.2;            dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));            dispatch_after(popTime, dispatch_get_main_queue(), ^(void){                wself.isNavFinished  = YES;            });        }];    }}- (void)navigationController:(UINavigationController *)navigationController       didShowViewController:(UIViewController *)viewController                    animated:(BOOL)animated{    if (!self.ifNavFromLeftMenu) {        return;    }}
     

3、在主控制器中加入导航栏左右按钮的点击处理实现方法：

-(void)leftDrawerButtonPress:(id)sender{    [self.mm_drawerController toggleDrawerSide:MMDrawerSideLeft animated:YES completion:nil];}-(void)rightDrawerButtonPress:(id)sender{    [self.mm_drawerController toggleDrawerSide:MMDrawerSideRight animated:YES completion:nil];}

编译运行就可以实现左右侧边栏的抽屉效果。