UIImage not rendering in Xcode 6.3.1 Playground

I spent two hours trying to make this simple code to work, with no luck.

我花了两个小时试图让这个简单的代码工作,没有运气。

What I did:

我做了什么:

• I put a resource in the Resources directory.

我在Resources目录中放置了一个资源。

• I referenced the resource as UImage(named: "resource.jpg")

我将资源引用为UImage(命名为:“resource.jpg”)

This is not a duplicate question as the Playground settings went through a major change in 6.3.1

这不是一个重复的问题,因为Playground设置经历了6.3.1中的重大更改

However, nothing is showing up. Here's a snapshot of my screen. As you can see there's no playground indicator running.

然而,没有任何东西出现。这是我的屏幕快照。你可以看到没有游乐场指示器在运行。

2 个解决方案

#1

The biggest problem I see from your screenshot is that you don't even have the playground timeline open to see the results in the first place. The playground timeline is 1 column to the right of the playground gutter.

我从您的屏幕截图中看到的最大问题是,您甚至没有打开游乐场时间轴来查看结果。操场时间线位于操场天沟右侧1列。

To view the playground timeline you use the Assistant Editor from the upper right. It is the button with the icon depicting 2 interconnected rings, or from the menu bar View > Assistant Editor > Show Assistant Editor.

要查看游乐场时间轴,请使用右上角的“助理编辑器”。它是带有图标的按钮,描绘了2个相互连接的环,或者从菜单栏视图>助理编辑器>显示助手编辑器。

The second thing I figured out is that you have to put the UIImageView inside a regular UIView for the call to XCPShowView to work properly. See code below.

我想到的第二件事是你必须将UIImageView放在常规的UIView中,以便调用XCPShowView才能正常工作。见下面的代码。

import UIKit
import XCPlayground

let image = UIImage(named: "pd.jpg")
let imageView = UIImageView(image: image)
XCPShowView("view", imageView) // Console error.

let bounds = imageView.bounds
let view = UIView(frame: bounds)
view.backgroundColor = UIColor.lightGrayColor()
view.addSubview(imageView)
XCPShowView("view", view) // This works!

Screen shot of the whole thing:

整个屏幕截图:

#2

For displaying an image in Playground you have to import XCPlayground.

要在Playground中显示图像,您必须导入XCPlayground。

import UIKit
import XCPlayground