故事板UIScrollView contentSize？ [英] Storyboard UIScrollView contentSize?

问题描述

我觉得我已经触及了阻止这个的每一个可能原因，但是我的故事板中有一个UIScrollView连接了一个插座，在viewDidLoad中我设置了contentSize以便我可以滚动（是的比我的框架大尺寸）！

I feel like I have touched on every single possible cause for stopping this, but I have a UIScrollView in my Storyboard hooked up with an outlet and in the viewDidLoad I set the contentSize so that I can scroll (yes bigger than my frame size)!

然而，无论我改变什么，我都无法滚动！我的滚动视图中有几个文本字段并且启用了弹跳，所以我可以看到它在使用我的子视图测试其上下移动但是无论我将contentSize设置为什么我都无法滚动。

However, whatever I change, I just can't scroll! I have a couple of textfields in my scrollview and bouncing enabled so I can see that when testing its moves up and down with my subviews in it but whatever I set the contentSize to I just can't scroll.

我可能遗失的任何东西/应该检查？这是UIScrollView在故事板中使用的已知问题吗？

Anything I might be missing/should check? Is this a known issue with UIScrollView being used in a storyboard?

甚至更奇怪的是，我可以这样做：
[scrollView setBackgroundColor：[UIColor blueColor]]; 我有一个蓝色滚动视图！但设置内容大小失败。

Whats even stranger is, I can do something like this: [scrollView setBackgroundColor:[UIColor blueColor]]; and I have a blue scroll view! But setting content size fails.

任何帮助表示感谢，谢谢。

Any help appreciated, thanks.

编辑：

我唯一的代码（否则scrollview只是放入了故事板视图控制器）：

My only code (otherwise scrollview is just dropped into storyboard view controller):

-(void)viewDidAppear:(BOOL)animated
{
    [scrollView setContentSize:CGSizeMake(320, 640)];
}

记录的框架，按预期出现：
宽度：320.00
身高：504.00

Logged frame, comes out as expected: width: 320.00 height: 504.00

编辑2：

原来删除滚动视图的任何子视图我的故事板让它滚动得很好。如果我通过故事板添加任何子视图，即使是空白的全新UIButton它也不会应用contentSize / allow滚动。

Turns out that removing any subviews of the scroll view in my storyboard lets it scroll just fine. If I add any subview to it at all via the storyboard, even a blank brand new UIButton it just won't apply the contentSize/allow scrolling.

推荐答案

使用ViewDidLayoutSubview

use ViewDidLayoutSubview

- (void)viewDidLayoutSubviews
{
    [_scrollView setContentSize:CGSizeMake(320, 500)];
}

UIViewController的方法调用顺序如下

UIViewController's method invoke sequence is as below

• awakeFromNib


• viewDidLoad


• viewWillAppear


• viewWillLayoutSubviews


• viewDidLayoutSubviews


• viewDidAppear

• awakeFromNib
• viewDidLoad
• viewWillAppear
• viewWillLayoutSubviews
• viewDidLayoutSubviews
• viewDidAppear

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