UIScrollView不滚动 [英] UIScrollView not scrolling

问题描述

我有一个 UIScrollView ，其中包含许多 UIImageView s，UILabels等...标签更长那个 UIScrollView ，但是当我运行应用程序时，我无法点击并向下滚动...

I have a UIScrollView which contains many UIImageViews, UILabels, etc... the labels are much longer that the UIScrollView, but when I run the app, I cannot click and scroll down...

为什么可能这是吗？

谢谢

推荐答案

显示一个总是好的完整的工作代码段：

It's always good to show a complete working code snippet:

// in viewDidLoad (if using Autolayout check note below):

UIScrollView *myScrollView;
UIView *contentView;
// scrollview won't scroll unless content size explicitly set

[myScrollView addSubview:contentView];//if the contentView is not already inside your scrollview in your xib/StoryBoard doc

myScrollView.contentSize = contentView.frame.size; //sets ScrollView content size

Swift 4.0

let myScrollView
let contentView

// scrollview won't scroll unless content size explicitly set

myScrollView.addSubview(contentView)//if the contentView is not already inside your scrollview in your xib/StoryBoard doc

myScrollView.contentSize = contentView.frame.size //sets ScrollView content size

我还没有找到在IB 中设置contentSize的方法（从Xcode 5.0开始）。

I have not found a way to set contentSize in IB (as of Xcode 5.0).

注意：
如果您使用的是Autolayout，那么将此代码放在中的最佳位置 - （void） viewDidLayoutSubviews 方法。

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