使用addChildViewController:方法，通过切换子viewController来切换界面，这个主界面就是一个container viewController的概念。
将子viewController的view加进来的时候，注意修改其frame，让它适应你用来盛装内容的view的大小
另外，childViewController中的所有东西可以通过一个UIScrollView盛装，加过来之后好滑动查看所有内容。
最后的样子：
最后上代码记录一下吧，整个页面：
#import "MonthlyPushViewController.h" #import "HuiZongPartController.h" #import "ChengBanPartController.h" #import "QiTaPartViewController.h" #import "Masonry.h" #import "TopButtonView.h" @interface MonthlyPushViewController ()<TopButtonViewDelegate> @property (nonatomic, weak) UIViewController *currentSubViewController; @property (nonatomic, weak) UIView *containerView; @end @implementation MonthlyPushViewController #pragma mark - 生命周期 - (void)viewDidLoad { [super viewDidLoad]; self.title = @"月度推送"; TopButtonView *topButtonView = [[TopButtonView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 49) titles:@[@"汇总情况", @"承办情况", @"其他情况"]]; // topButtonView.delegate = self; [self.view addSubview:topButtonView]; // 底部放一条线 UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(0, 49, SCREEN_WIDTH, 1)]; lineView.backgroundColor = COLOR_RGB(243, 243, 243); [self.view addSubview:lineView]; UIView *container = [[UIView alloc] init]; self.containerView = container; [self.view addSubview:container]; [container mas_makeConstraints:^(MASConstraintMaker *make) { make.left.bottom.right.equalTo(self.view); make.top.equalTo(lineView.mas_bottom); }]; // 添加几个子viewController [self addChildViewController:[[HuiZongPartController alloc] init]]; [self addChildViewController:[[ChengBanPartController alloc] init]]; [self addChildViewController:[[QiTaPartViewController alloc] init]]; // 预先设置初始显示的页面,不要忘记设置frame适应容器view的大小 self.childViewControllers[0].view.frame = self.containerView.bounds; [self.containerView addSubview:self.childViewControllers[0].view]; self.currentSubViewController = self.childViewControllers[0]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; } #pragma mark - 按钮点击事件，切换底部页面 - (void)topButtonsDidClickedAtIndex:(NSInteger)index { // 注意，先修改好childViewController的frame UIViewController *selectedController = self.childViewControllers[index]; selectedController.view.frame = self.containerView.bounds; if (self.currentSubViewController != self.childViewControllers[index]) { [self transitionFromViewController:self.currentSubViewController toViewController:self.childViewControllers[index] duration:0.8 options:UIViewAnimationOptionTransitionCurlUp animations:^{} completion:^(BOOL finished) { if (finished) { self.currentSubViewController = self.childViewControllers[index]; } }]; } } @end其他三个子页面分别在对应的自己的ViewController中布局，顶部的三个按钮是自己定义了一个TopButtonView，代码如下：
// TopButtonView.h
#import <UIKit/UIKit.h> @protocol TopButtonViewDelegate <NSObject> - (void)topButtonsDidClickedAtIndex:(NSInteger)index; @end @interface TopButtonView : UIView @property (nonatomic, weak) id<TopButtonViewDelegate> delegate; - (instancetype)initWithFrame:(CGRect)frame titles:(NSArray *)titleArray; @end// TopButtonView.m
#import "TopButtonView.h" #import "UtilsMacro.h" @interface TopButtonView () @property (nonatomic, copy) NSMutableArray<UIButton *> *buttonsArray; @end @implementation TopButtonView - (NSMutableArray *)buttonsArray { if (!_buttonsArray) { _buttonsArray = [[NSMutableArray alloc] init]; } return _buttonsArray; } - (instancetype)initWithFrame:(CGRect)frame titles:(NSArray *)titleArray { self = [super initWithFrame:frame]; // 中心线y值 CGFloat centerY = frame.size.height/2 + frame.origin.y; // 每块视图的宽度，按标题个数评分view的frame宽度 CGFloat eachWidth = frame.size.width / titleArray.count; if (self) { for (int i = 0; i < titleArray.count; i ++) { // 按钮在竖直方向上居中，高30，宽占77% UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(i * eachWidth + 0.115 * eachWidth, centerY - 15, eachWidth * 0.77, 30)]; button.layer.cornerRadius = 15; button.layer.masksToBounds = true; [button setTitle:titleArray[i] forState:UIControlStateNormal]; [button.titleLabel setFont:SYSTEMFONT(14)]; [button addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside]; [self.buttonsArray addObject:button]; [self addSubview:button]; } [self changeSelectedTabStyle:0]; } return self; } // 点击之后，事件响应 - (void)buttonClicked:(UIButton *)button { [self.buttonsArray enumerateObjectsUsingBlock:^(id _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { if (obj == button) { if ([self.delegate respondsToSelector:@selector(topButtonsDidClickedAtIndex:)]) { [self changeSelectedTabStyle:idx]; [self.delegate topButtonsDidClickedAtIndex:idx]; *stop = YES; } } }]; } // 修改点击之后的样式 - (void)changeSelectedTabStyle:(NSInteger)index { [self.buttonsArray enumerateObjectsUsingBlock:^(UIButton * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { [obj setBackgroundColor:[UIColor whiteColor]]; [obj setTitleColor:COLOR_RGB(3, 169, 244) forState:UIControlStateNormal]; if (idx == index) { [obj setBackgroundColor:COLOR_RGB(3, 169, 244)]; [obj setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; } }]; } @end