UIScrollView不滚动？

问题描述

我有一个 UIScrollView 在界面生成器中创建了一堆 UITextView 和 UIImageView 已添加的对象。我有它连接到 IBOutlet 和 - （void）viewDidLoad 我设置其内容大小为 1200x2000 。用户交互启用，多点触控，滚动启用并显示垂直和水平滚动指示器均设置为 YES 。当我在iOS模拟器中启动应用程序时，它不滚动。什么可能是这种行为的原因？

I have a UIScrollView created in interface builder with a bunch of UITextView and UIImageView objects already added. I have it connected to an IBOutlet, and under -(void)viewDidLoad I set its content size to 1200x2000. User interaction Enabled, Multitouch, Scrolling Enabled and shows vertical and horizontal scroll indicators are all set to YES. When I launch the app in the iOS simulator, it doesn't scroll. What could possibly be the cause of this behavior?

推荐答案

1. viewDidLoad即将推出。您必须等到视图的布局发生之后。请尝试在viewDidAppear中设置contentSize。

1. viewDidLoad is to soon. You must wait until after the layout of the views has taken place. Try setting the contentSize in viewDidAppear.

是否使用autolayout？如果是这样，请检查以下答案（并忘记1.）：
。

Are you using autolayout? If so, check out the following answer (and forget 1.):UIScrollView doesn't use autolayout constraints.

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