代码：

UIView {
    name = MainTabBar;
    edges = 0;
    
    UITabBarController {
        id = tabBarController;
        top.left.right = 0;
        bottom = -49;
        x-bottom = -88;
        //tabbar = hide;
        
        tabBar {
            class = IndexController;
            title = "首页";
            image = "xxx2.png";
        }
        tabBar {
            class = ProductFilterController;
            title = "产品";
            image = "xxx3.png";
        }
        tabBar {
            class = SceneListController;
            title = "场景";
            image = "xxx4.png";
        }
        tabBar {
            class = ShoppingCartController;
            baseOn = UINavigationController;
            baseOnNavigationBar = hide;
            title = "购物车";
            image = "xxx4.png";
        }
        tabBar {
            class = MoreController;
            baseOn = UINavigationController;
            
            title = "更多";
            image = "xxx4.png";
        }
    }
    
    UIView {
        id = theFootView;
        left.right.bottom = 0;
        top = tabBarController.bottom;
        
        UIView {
            id = footView;
            left.right.top = 0;
            height = 49;
            bgColor = #000ff0;
        }
    }
}

效果图：

生成MainTabBarView.h

#import <UIKit/UIKit.h>

#import "QSKit.h"

@protocol MainTabBarViewDelegate;

@interface MainTabBarView : UIView

#pragma mark - 属性
@property (nonatomic, weak) UIView* theLoadView;

@property (nonatomic, strong) UITabBarController* tabBarController;

@property (nonatomic, weak) UIView* theFootView;

@property (nonatomic, weak) UIView* footView;

//自动创建的协议
@property (nonatomic, weak) id<MainTabBarViewDelegate> delegate;

#pragma mark - 方法
- (void) addToSuper: (id) aSuper;

//重写这个方法可以定义上面方法的布局样式，返回 YES 生效。
- (BOOL) addToSuperWithSetupLayoutFromSuperView:(UIView*)aSuperView;

@end

@protocol MainTabBarViewDelegate <NSObject>

//写上需要的协议方法：

@end

生成MainTabBarView.m

#import "MainTabBarView.h"

#import "Masonry.h"

@interface MainTabBarView ()

@end

@implementation MainTabBarView

#pragma mark - 内置的方法
- (void) addToSuper:(id)aSuper {
    if ([aSuper isKindOfClass:[UIViewController class]]) {
        UIViewController* tempController = aSuper;
        [self addToSuper:[tempController view]];
        return;
    }
    if ([aSuper isKindOfClass:[UIView class]]) {
        UIView* tempView = aSuper;
        [tempView addSubview:self];
        
        if ([self addToSuperWithSetupLayoutFromSuperView:tempView] == NO) {
            [self mas_remakeConstraints:^(MASConstraintMaker *make) {
                make.edges.mas_equalTo(0);
            }];
        }
        return;
    }
}
- (BOOL) addToSuperWithSetupLayoutFromSuperView:(UIView*)aSuperView {
    
    return NO;
}
#pragma mark - 初始的方法
- (instancetype) init {
    if (self = [super init]) {
        [self setupUI];
    }
    return self;
}
- (instancetype) initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        [self setupUI];
    }
    return self;
}
#pragma mark - 配置界面的方法
- (void) setupUI {
    if (self.theLoadView) {
        return;
    }
    
    #pragma mark - UI - init - theLoadView
    UIView* theLoadView = [UIView new];
    [self addSubview:theLoadView];
    [theLoadView mas_makeConstraints:^(MASConstraintMaker *make) {
        
        make.edges.mas_equalTo(0);
    }];
    self.theLoadView = theLoadView;
    
    #pragma mark - UI - init - tabBarController
    UITabBarController* tabBarController = [UITabBarController new];
    [theLoadView addSubview:tabBarController.view];
    [tabBarController.view mas_makeConstraints:^(MASConstraintMaker *make) {
        
        make.top.left.right.mas_equalTo(0);
        if ([QSKit shared].iPhoneX) {
            make.bottom.mas_equalTo(-88);
        } else {;
            make.bottom.mas_equalTo(-49);
        }
    }];
    self.tabBarController = tabBarController;
    
    #pragma mark - UI - init - theFootView
    UIView* theFootView = [UIView new];
    [theLoadView addSubview:theFootView];
    [theFootView mas_makeConstraints:^(MASConstraintMaker *make) {
        
        make.left.right.bottom.mas_equalTo(0);
        make.top.mas_equalTo(tabBarController.view.mas_bottom);
    }];
    self.theFootView = theFootView;
    
    #pragma mark - UI - init - footView
    UIView* footView = [UIView new];
    footView.backgroundColor = [QSKit color:@"#000ff0"];
    [theFootView addSubview:footView];
    [footView mas_makeConstraints:^(MASConstraintMaker *make) {
        
        make.left.right.top.mas_equalTo(0);
        make.height.mas_equalTo(49);
    }];
    self.footView = footView;
    
}

@end

生成MainTabBarController.h

#import <UIKit/UIKit.h>

@interface MainTabBarController : UIViewController

@end

生成MainTabBarController.m

#import "MainTabBarController.h"

#import "MainTabBarView.h"

@interface MainTabBarController ()<MainTabBarViewDelegate>

@property (nonatomic, weak) MainTabBarView* myView;

@end

@implementation MainTabBarController

#pragma mark - dealloc
- (void) dealloc {
    
}

#pragma mark - loadView
- (void) loadView {
    [super loadView];
    
    self.view.backgroundColor = [UIColor whiteColor];
    
    MainTabBarView* myView = [MainTabBarView new];
    myView.delegate = self;
    [myView addToSuper:self];
    self.myView = myView;
}

#pragma mark - viewDidLoad
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    NSMutableArray* viewControllerKeepArray = [NSMutableArray array];
    {
        UIViewController* viewController = [NSClassFromString(@"IndexController") new];
        viewController.tabBarItem.title = @"首页";
        viewController.tabBarItem.image = [QSKit image:@"xxx2.png"];
        [viewControllerKeepArray addObject:viewController];
    }
    {
        UIViewController* viewController = [NSClassFromString(@"ProductFilterController") new];
        viewController.tabBarItem.title = @"产品";
        viewController.tabBarItem.image = [QSKit image:@"xxx3.png"];
        [viewControllerKeepArray addObject:viewController];
    }
    {
        UIViewController* viewController = [NSClassFromString(@"SceneListController") new];
        viewController.tabBarItem.title = @"场景";
        viewController.tabBarItem.image = [QSKit image:@"xxx4.png"];
        [viewControllerKeepArray addObject:viewController];
    }
    {
        UIViewController* tempViewController = [NSClassFromString(@"ShoppingCartController") new];
        
        UINavigationController* viewController = [[UINavigationController alloc] initWithRootViewController:tempViewController];
        viewController.navigationBarHidden = YES;
        viewController.navigationBar.hidden = YES;
        viewController.tabBarItem.title = @"购物车";
        viewController.tabBarItem.image = [QSKit image:@"xxx4.png"];
        [viewControllerKeepArray addObject:viewController];
    }
    {
        UIViewController* tempViewController = [NSClassFromString(@"MoreController") new];
        
        UINavigationController* viewController = [[UINavigationController alloc] initWithRootViewController:tempViewController];
        viewController.tabBarItem.title = @"更多";
        viewController.tabBarItem.image = [QSKit image:@"xxx4.png"];
        [viewControllerKeepArray addObject:viewController];
    }
    self.myView.tabBarController.viewControllers = viewControllerKeepArray;
    
}

#pragma mark - viewWillAppear
- (void) viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    
}

#pragma mark - viewDidAppear
- (void) viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    
}

#pragma mark - viewWillDisappear
- (void) viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    
}

#pragma mark - viewDidDisappear
- (void) viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
    
}

#pragma mark - MainTabBarViewDelegate


#pragma mark - 是否隐藏状态栏
//- (BOOL) prefersStatusBarHidden {
//    return YES;
//}

#pragma mark - 方向旋转
//- (BOOL) shouldAutorotate {
//    return YES;
//}
//- (UIInterfaceOrientationMask) supportedInterfaceOrientations {
//    return UIInterfaceOrientationMaskAll;
//}

@end