UIScrollView 3页滑屏

需要使用UIScrollView实现3页滑屏
得纯代码实现 使用了Masonry适配

需要注意的是
scrollView与3页视图之间还需要一个View

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    UIScrollView *scrollView = UIScrollView.new;
    
    scrollView.backgroundColor = [UIColor redColor];
    
    [self.view addSubview:scrollView];
    
    [scrollView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.view);
    }];
    
    UIView *contentView = UIView.new;
    contentView.backgroundColor = [UIColor blackColor];
    
    [scrollView addSubview:contentView];
    
    [contentView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(scrollView);
        make.height.equalTo(scrollView);
    }];
    
    UIView *view1 = UIView.new;
    view1.backgroundColor = [UIColor greenColor];
    [contentView addSubview:view1];
    
    [view1 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(@0.0);
        make.left.equalTo(@0.0);
        make.width.equalTo(scrollView.mas_width);
        make.height.equalTo(scrollView.mas_height);
    }];
    
    
    UIView *view2 = UIView.new;
    view2.backgroundColor = [UIColor yellowColor];
    [contentView addSubview:view2];
    
    [view2 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(@0.0);
        make.left.equalTo(view1.mas_right);
        make.width.equalTo(scrollView.mas_width);
        make.height.equalTo(scrollView.mas_height);
    }];
    
    
    UIView *view3 = UIView.new;
    view3.backgroundColor = [UIColor purpleColor];
    [contentView addSubview:view3];
    
    [view3 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(@0.0);
        make.left.equalTo(view2.mas_right);
        make.width.equalTo(scrollView.mas_width);
        make.height.equalTo(scrollView.mas_height);
    }];
    
    [contentView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.equalTo(view3.mas_right);
    }];
}

Jietu20190610-110744.jpg

Jietu20190610-110712.jpg