在启用垂直分页的 UIScrollView 中垂直滚动 [英] Scroll Vertically in a UIScrollView with Vertical Paging enabled

问题描述

希望你能在这里给我一些指导.我有一个带有垂直分页的滚动视图设置.我的问题是视图大于屏幕(垂直).我想要的效果是让视图滚动到底部，然后翻页到下一页.就像我下面的图片试图描绘的那样.

Hoping you could give me some direction here. I have a scrollview setup with vertically paging. My problem is the views are larger than the screen (vertically). My desired effect is to have the view scroll to the bottom and then page to the next page. Like my image below is trying to depict.

我尝试将滚动视图的大小和内容大小设置为正确偏移视图的视图大小.我只是无法滚动查看视图底部，只能翻页到下一个视图.

I have tried setting the size of the scrollview and the content size to the size of the view which does offset the views correctly. I just can't scroll to see the bottom of the view, It just pages to the next view.

感谢您的建议.

class ViewController: UIViewController {

let scrollView = UIScrollView() // Create the scrollView

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.


    //Set up and add scrollView to view
    scrollView.frame = self.view.frame
    self.scrollView.pagingEnabled = true
    self.view.addSubview(scrollView)

    //An array of UIColors to add to the views
    let x : [UIColor] = [UIColor.blueColor(),UIColor.redColor(),UIColor.yellowColor()]

    //For each UIColor add a view that is 100px larger then the height of the scrollView
    for index in 0...x.count-1{
        //
        let subView = UIView(frame: CGRectMake(
            0, //x offset
            (self.scrollView.frame.height + 100) * CGFloat(index), //y offset
            self.scrollView.frame.width, // width
            (self.scrollView.frame.height + 100))) // height
        subView.backgroundColor = x[index] //background Color
        scrollView.addSubview(subView) // Add View

    }

    //
    let c = (self.scrollView.frame.size.height + 100) * CGFloat(x.count)
    self.scrollView.contentSize = CGSizeMake(self.scrollView.frame.width, c)

    //Background Color
    self.view.backgroundColor = UIColor.greenColor()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}
}

推荐答案

我发现最好的方法是对内容使用嵌套滚动视图.这是我的代码最终的样子.

The best way I've found to do it is to use a nested scrollview for the content. Here is what my code ended up looking like.

class ViewController: UIViewController, UIScrollViewDelegate {

let scrollView = ScrollView() // Create the scrollView

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.


    //Set up and add scrollView to view
    scrollView.frame = self.view.frame
    self.scrollView.pagingEnabled = true
    self.view.addSubview(scrollView)
    self.scrollView.delegate = self

    //An array of UIColors to add to the views
    let x : [UIColor] = [UIColor.blueColor(),UIColor.redColor(),UIColor.yellowColor()]

    //For each UIColor add a view that is 100px larger then the height of the scrollView
    for index in 0...x.count-1{
        //
        let subView = UIScrollView(frame: CGRectMake(
            0, //x offset
            (self.scrollView.frame.height * CGFloat(index)), //y offset
            self.scrollView.frame.width, // width
            (self.scrollView.frame.height))) // height

//Set the size of the content view
        let contentView = UIView(frame: CGRectMake(0, 0, self.view.frame.width, 1000))

        subView.contentSize = CGSizeMake(self.view.frame.width, contentView.frame.height)
        contentView.backgroundColor = x[index]
        subView.addSubview(contentView)
        scrollView.addSubview(subView) // Add View

    }

    //
    let c = (self.scrollView.frame.size.height) * CGFloat(x.count)
    self.scrollView.contentSize = CGSizeMake(self.scrollView.frame.width, c)

    //Background Color
    self.view.backgroundColor = UIColor.greenColor()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}
}

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