以编程方式填充UIScrollView内容

Question

必须有一种更好的方法来用UIScrollView，UILabel和其他内容填充UIImageView，而不必用开始位置定义CGRectMake。是否有堆叠视图之类的东西？我不是真的，但是动态添加内容的正确方法是什么。

[这里我正在做的事情：

func configureView() {
    self.addHeaderImage()

    var scrollView: UIScrollView!
    var missionStatement: UILabel!
    var missionStatementText: UILabel!
    var history: UILabel!
    var historyText: UILabel!

    scrollView = UIScrollView()
    scrollView!.frame = CGRectMake(0, headerImage.bounds.height, self.view.bounds.width, self.view.bounds.height)
    scrollView!.contentSize = CGSize(width: self.view.bounds.width, height: self.view.bounds.height * 2)
    scrollView!.autoresizingMask = UIViewAutoresizing.FlexibleHeight
    self.view.addSubview(scrollView)

    missionStatement = UILabel()
    missionStatement!.frame = CGRectMake(10, 5, headerImage.bounds.width - 20, 30)
    missionStatement!.text = "Our Mission Statement"
    missionStatement!.font = UIFont(name: "HelveticaNeue-Bold", size: 22.0)
    scrollView.addSubview(missionStatement)

    missionStatementText = UILabel()
    missionStatementText!.frame = CGRectMake(10, missionStatement.frame.height, headerImage.bounds.width - 20, 100)
    missionStatementText!.text = "Covenant United Methodist Church, as a companionate community, serves people through the sharing, caring, and reaching out in the name of Jesus Christ."
    missionStatementText!.font = UIFont(name: "HelveticaNeue", size: 17.0)
    missionStatementText!.numberOfLines = 0
    scrollView.addSubview(missionStatementText)

    history = UILabel()
    // By the time Im done adding things to this 1 view, Its going to be an insane addition problem to find the starting y of the rectangle
    history!.frame = CGRectMake(0, missionStatement.frame.height, 0, 0)
}

Answer 1

您可以编写UIView的扩展名

extension UIView {

    func addSubviewAtBottomOfAllSubviews(view:UIView){
        var maxY = CGFloat(0)
        for subview in self.subviews{
            if maxY < subview.frame.maxY{
                maxY = subview.frame.maxY
            }
        }

        view.frame.origin.y = maxY
        self.addSubview(view)
    }
}

并且还要编写func来调整Scroll内容视图的大小，因此，如果视图的高度大于滚动视图的大小，则使其可滚动。>

extension UIScrollView{
    func resizeContentSize(){

        var contentRect = CGRectZero;
        for view in self.subviews{
            contentRect = CGRectUnion(contentRect, (view ).frame);
        }

        self.contentSize = contentRect.size;

    }
}
用途：

scrollView.addSubviewAtBottomOfAllSubviews(textLabel)
scrollView.addSubviewAtBottomOfAllSubviews(anotherView)
scrollView.resizeContentSize()

Answer 2

@ Daniel Krom的改进和扩展答案：