如何根据swift 3中的Collection View Content Height调整UIView高度? [英] How to adjust UIView height according to the Collection View Content Height in swift 3?

问题描述

我在项目中调整 UIView 高度时遇到问题.我说明了这个项目.

I have a problem of adjusting the UIView height in my project. I illustrated the project.

让我解释一下我的项目图片.
每个 Orange UIView 都有 trailing、leading、top 和 bottom 约束 和 垂直间距 到每个 UIView.
但是，我向每个 UIView 添加高度"，因为如果我不添加，它会给出错误并添加高度"警告.
在 UIView2 中，我添加了 3 个容器视图.每个容器视图有 3 个视图控制器.(数据 1 视图、数据 2 视图、数据 3 视图)
我在每个视图中嵌入了集合视图.
问题是在 Data 3 View 中有很多集合 View 单元格数据.因此，Orange UIView 的高度应该根据集合视图的内容增加.
目前，如果用户单击数据 3 分段控制按钮，我只需添加固定高度常量(高度:800).
但是，我不想像这样设置固定高度.
自上周以来，我一直在尝试解决这个问题.直到现在我都无法解决这个问题.
谁能帮我逐步解释一下吗?因为我不知道我该怎么做.

Let me explain about my project image.
Each Orange UIView has trailing, leading , top and bottom constraints and vertical spacing to each UIView.
But, I add "Height" to each UIView because if I don't add, it gives error and add the "Height" warning.
In UIView2, I add 3 Container Views. Each Container Views has 3 View Controllers. (Data 1 View, Data 2 View, Data 3 View)
I embed Collection View inside in each views.
The problem is that in Data 3 View has many collection View cell data. So, the height of Orange UIView should be increase according to the collection view content.
Currently, I just add fixed height constant (height:800) if users click on the Data 3 segmented control button.
But, I don't want to set fixed height like this.
I've been trying to solve this problem since last week. I could not solve this till now.
Can anyone help me explain in step by step please? Because I have no idea of what should I do.

推荐答案

由于 UITableView 或 UICollectionView 继承自 UIScrollView 他们基本上没有intrinsicContentSize.
您有两种方法可以使高度与内容大小(可以滚动的空间)相同:

Since UITableView or UICollectionView inherit from UIScrollView they basically do not have an intrinsicContentSize.
You have two ways to make the same height as the content size (the space that you can scroll):

• 您可以继承集合视图并重写 intrinsicContentSize 方法以返回 contentSize 和 sizeThatFits: 方法
• 在界面中创建一个高度约束，并将其设置为等于集合视图的内容大小.

• You can subclass the collection view and override intrinsicContentSize method to return the contentSize and the sizeThatFits: method as well
• Create a height constraint in the interface and set it as equal to the content size of the collection view.

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