如何在 iOS 上制作垂直滚动视图？
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How to make a vertical scrolling view on iOS?
提问by Anil Varghese
Can someone please guide me to a tutorial , on how to implement a vertical scrolling view on my iOS app?
有人可以指导我学习如何在我的 iOS 应用程序上实现垂直滚动视图的教程吗？
I can't believe that the last 2 days , I can't find a single working example on just a vertical scrolling view. All the tutorials are about horizontal scrolling, zooming etc etc.
我不敢相信过去 2 天，我在垂直滚动视图上找不到单个工作示例。所有的教程都是关于水平滚动、缩放等。
What I am looking for would be something like this tutorial http://www.edumobile.org/iphone/iphone-programming-tutorials/scrollview-example-in-iphone-2/, which shows how to make a uiscrollView and add objects to it, from the Builder and not programmatically. The only flaw I found was , that when trying to add a map down in the scrolling area, the map would appear up and not in the position I placed it. Maybe any ideas on that too?
我正在寻找的是类似于本教程http://www.edumobile.org/iphone/iphone-programming-tutorials/scrollview-example-in-iphone-2/ 的内容，它展示了如何制作 uiscrollView 并添加对象到它，从 Builder 而不是以编程方式。我发现的唯一缺陷是，当尝试在滚动区域向下添加地图时，地图会向上显示而不是在我放置它的位置。也许对此也有任何想法？
Anything in mind?
有什么想法吗？
回答by Anil Varghese
So you want to create a scroll view in xib.
所以你想在xib中创建一个滚动视图。
- Add a scroll view to the nib file
set its size to to whatever you want
Add your controls (Buttons,labels..)
Add it as a sub view of main view
Finally create a property of scroll view and in
viewDidLoadset the content size of the scroll viewself.scrollView.contentSize =CGSizeMake(320, 700);
- 向 nib 文件添加滚动视图
将其大小设置为您想要的任何值
添加您的控件（按钮、标签..）
将其添加为主视图的子视图
最后创建滚动视图的属性并
viewDidLoad设置滚动视图的内容大小self.scrollView.contentSize =CGSizeMake(320, 700);
回答by Atif Khan
It simple, same as horizontal scroll view. Add a scrollview in a view hierarchy,
它很简单，与水平滚动视图相同。在视图层次结构中添加滚动视图，
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:scrollView];
Now to make scroll view scrollable, set its scrollview content size greater than its bound.
现在要使滚动视图可滚动，请将其滚动视图内容大小设置为大于其边界。
[scrollView setContentSize:CGSizeMake(scrollView.bounds.size.width, scrollView.bounds.size.height*3)];
Now it can scroll three time the height of scrollView.
现在它可以滚动三倍于 scrollView 的高度。
回答by Matt Perejda
I've struggled with this simple issue for a full day. There are most likely benefits to a more sophisticated approach, but unchecking autolayout solved my issue.
我一整天都在为这个简单的问题而苦苦挣扎。更复杂的方法很可能有好处，但取消选中自动布局解决了我的问题。
For the quick fix, I believe this is the best approach and will save you a HUGE headache.
对于快速修复，我相信这是最好的方法，并且会为您省去一个巨大的麻烦。
回答by Matt Perejda
Just change the content size of your scrollview.Let's assume you are creating a UIScrollView with the following frame
只需更改滚动视图的内容大小。假设您正在使用以下框架创建 UIScrollView
scl=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 620, 172)];
Now call the content size property of your scroll view,like i have shown below .
现在调用滚动视图的内容大小属性，如下所示。
[scl setContentSize:CGSizeMake(700, 172)];
Now add the scroll view on a view / View Controller etc and check it .
现在在视图/视图控制器等上添加滚动视图并检查它。
