1.如果不在APPDelegate引入MMDrawerController框架，那么就要注意在需要点击的视图控制器中的对象的获取。
//工程中标签视图控制器
MainTabBarViewController *tabbarController = [[MainTabBarViewController alloc] init];
//初始化视图控制器
LeftDrawController *leftDrawerController = [[LeftDrawController alloc] init];//左侧视图
*home = [[HomeViewController alloc] init];
NewViewController *new = [[NewViewController alloc] init];
MapViewController *map = [[MapViewController alloc] init];
MoreViewController *more = [[MoreViewController alloc] init];//几个主界面就都可以有左抽屉效果了
//存放在数组
NSArray *array = @[home,new,map,more];
NSMutableArray *navigationArray = [NSMutableArray array];
//创建导航栏
for(int i = 0;i < array.count; i ++){
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:array[i]];
[navigationArray addObject:nav];
}
tabbarController.viewControllers = navigationArray;
//设置中心视图和左拉视图
self.drawerController = [[MMDrawerController alloc] initWithCenterViewController:tabbarController
leftDrawerViewController:leftDrawerController
rightDrawerViewController:nil];
//手势拉出、拉入
[self.drawerController setOpenDrawerGestureModeMask:MMOpenDrawerGestureModeAll];
[self.drawerController setCloseDrawerGestureModeMask:MMCloseDrawerGestureModeAll];
//拉出的宽度
[self.drawerController setMaximumLeftDrawerWidth:350.0];
//赋予keyWindow显示
[UIApplication sharedApplication].keyWindow.rootViewController = self.drawerController;
2.在HomeViewController中实现导航栏按钮点击打开和关闭。
1.引入框架MMDrawerController
2对象的获取
MMDrawerController *MMVC =(MMDrawerController*)[UIApplication sharedApplication].keyWindow.rootViewController;
3方法的实现 //往右拉
[MMVC toggleDrawerSide:MMDrawerSideLeft animated:YES completion:^(BOOL finished) {
}];