UIScrollView + Masonry

废话不多说直接上代码

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    
    [self.view addSubview:self.scrollView];
    [self setupSub];
    [self layoutSubviewSnapKit];
    
    
}
- (UIScrollView *)scrollView{
    if (!_scrollView) {
        _scrollView = [[UIScrollView alloc]init];
        _scrollView.backgroundColor = [UIColor purpleColor];
        _scrollView.pagingEnabled = YES;
        _scrollView.showsVerticalScrollIndicator = NO;
//        _scrollView.directionalLockEnabled = YES;
        _scrollView.bounces = NO;
    }
    return _scrollView;
}
- (void)setupSub{
    self.leftVC = [[leftViewController alloc]init];
    self.rightVC = [[rightViewController alloc]init];
    
    [self addChildViewController:self.leftVC];
    [self addChildViewController:self.rightVC];
    
    [self.scrollView addSubview:self.leftVC.view];
    [self.scrollView addSubview:self.rightVC.view];
}
- (void)layoutSubviewSnapKit{
    [self.leftVC.view mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.bottom.mas_equalTo(self.view);
        make.width.mas_equalTo(kScreenWidth);
        make.left.mas_equalTo(self.scrollView);
    }];
    [self.rightVC.view mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.bottom.mas_equalTo(self.view);
        make.width.mas_equalTo(kScreenWidth);
        make.left.mas_equalTo(self.leftVC.view.mas_right);
    }];
    [self.scrollView mas_updateConstraints:^(MASConstraintMaker *make) {
        make.edges.mas_equalTo(self.view);
        make.right.mas_equalTo(self.rightVC.view);
    }];
}