iOS以编程方式在导航栏下方设置scrollView约束

iOS以编程方式在导航栏下方设置scrollView约束

本文介绍了Swift iOS以编程方式在导航栏下方设置scrollView约束的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

所以我的UIViewController嵌入在导航控制器中。我以编程方式添加导航按钮,现在尝试在此导航栏下方添加scrollView。我遇到的问题是填充整个帧大小并进入导航栏。

So my UIViewController is embedded in a navigation controller. I programatically add the navigation buttons and now trying to add a scrollView below this navigation bar. The problem I'm having is this is filling the full frame size and going under the navigation bar.

如何以编程方式设置此滚动视图的约束?

How do I programatically set constraints of this scrollview?

var scrollView: UIScrollView!
var containerView = UIView()

override func viewDidLoad() {
    super.viewDidLoad()
    self.navigationItem.title = "Filters"
    // add some buttons on the navigation

    self.scrollView = UIScrollView()
    self.scrollView.backgroundColor = UIColor.grayColor()
    self.scrollView.contentSize = CGSizeMake(self.view.frame.size.width, self.view.frame.size.height)

    containerView = UIView()

    scrollView.addSubview(containerView)
    view.addSubview(scrollView)

    let label = UILabel(frame: CGRectMake(0, 0, 100, 21))
    label.text = "my label"
    containerView.addSubview(label)
}


推荐答案

虽然Clafou的答案肯定是正确的,如果你不需要透明度并想在导航栏下开始,真正正确的方法是改变ViewController的行为,使其适当地适合内容。为此,您有两个选择:

While Clafou's answer is certainly correct, if you don't need transparency and want to start under navigation bar, the really proper way is to change behavior of the ViewController so it fits the content properly. To do that, you have two options:

1)假设您有故事板,请转到ViewController属性检查器并禁用在顶部栏下

1) Assuming you have Storyboard, go to ViewController Attributes Inspector and disable "Under top bars"

2)假设你是通过代码的一切,你将需要寻找以下属性 - edgesForExtendedLayout extendedLayoutIncludesOpaqueBars 。已经在SO上有所以我不会在这里覆盖它。

2) Assuming you are everything through code, you will want to look for following properties - edgesForExtendedLayout, and extendedLayoutIncludesOpaqueBars. There is great answer for that already on SO so I won't cover it here.

希望它有所帮助!

这篇关于Swift iOS以编程方式在导航栏下方设置scrollView约束的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

09-02 07:26
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