在将约束应用于UIScrollView时需要帮助 [英] Need Help in applying constraints to UIScrollView

问题描述

我正在以编程方式添加子视图. 要求::添加更多视图后，应启用滚动. 我应用的约束:

I'm adding subviews programmatically. Requirement : when extra views are added the scroll should be enabled. The constraints that I applied :

要删除顶部的多余空格，我写了self.automaticallyAdjustsScrollViewInsets = false 也将内容大小设置为self.scrollView.contentSize = CGSize(width: self.contentView.frame.width, height: self.contentView.frame.height*2)

To remove extra spaces at the top I wrote self.automaticallyAdjustsScrollViewInsets = false also give content size as self.scrollView.contentSize = CGSize(width: self.contentView.frame.width, height: self.contentView.frame.height*2)

但是，加载视图时，滚动被完全禁用.

But the when the view is loaded scroll is completely disabled.

请帮助我

推荐答案

使用自动版式时，必须在 viewcontroller 方法中设置内容大小 覆盖以下方法.

When you using auto layout, you have to set content size at viewcontroller method, you have to override following method.

-(void)viewWillLayoutSubviews;

迅速

override func viewWillLayoutSubviews() {

    }

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