如何以编程方式拍摄屏幕截图（Swift，SpriteKit）

I tried what ever was suggested but the output was a white,blank screenshot. Which leads me to assume that I haven't added anything to the view. Here's how I'm adding graphics to my view. The addChild method comes with the SpriteKit and it takes in SKSpriteNodes:

我尝试了所建议的但输出是一个白色的空白屏幕截图。这让我认为我没有在视图中添加任何内容。这是我如何在我的视图中添加图形。 addChild方法附带SpriteKit，它接收SKSpriteNodes：

  addChild(background)
    addChild(rate)
    addChild(scoreLabel)
    addChild(share)
    addChild(playAgain)
    addChild(highScoreLabel)
    addChild(scoreBackground)
    addChild(highScoreBackground)

Here's the method that takes the screenshot:

以下是截取屏幕截图的方法：

    UIGraphicsBeginImageContext(self.view!.bounds.size)
    self.view!.layer.renderInContext(UIGraphicsGetCurrentContext())
    let screenshot = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()
    UIImageWriteToSavedPhotosAlbum(screenshot, nil, nil, nil)

Any suggestions would be helpful

任何的意见都将会有帮助

2 个解决方案

#1

I think this question could be merged with this one Screenshotting on Iphone in swift only has a white background

我认为这个问题可以合并到这个问题。在swift上的Iphone截图只有白色背景

which seems the same

这似乎是一样的

EDIT:

编辑：

I think I found a solution. First read this post: How Do I Take a Screen Shot of a UIView?

我想我找到了解决方案。首先阅读这篇文章：如何拍摄UIView的屏幕截图？

I create an Extensions.swift file in which I 'extended' the methods of a UIView using that link.

我创建了一个Extensions.swift文件，其中我使用该链接扩展了UIView的方法。

After that I simply connect the following to my sprite-kit button

之后，我只需将以下内容连接到我的sprite-kit按钮

let screenshot = self.view?.pb_takeSnapshot()
UIImageWriteToSavedPhotosAlbum(screenshot, nil, nil, nil)

Voilà, the image is in the camera roll!

Voilà，图像在相机胶卷中！

#2

Here is how I solved it in swift 3: This captures all the nodes in your scene: Note: in below code represents the view it is capturing from. You may want to update it with your view in project.

以下是我在swift 3中解决它的方法：它捕获场景中的所有节点：注意：在下面的代码中表示它正在捕获的视图。您可能希望使用项目中的视图更新它。

func captureScreen() -> UIImage {
    UIGraphicsBeginImageContextWithOptions(yourview.bounds.size, true, 0)

    yourview.drawHierarchy(in: yourview.bounds, afterScreenUpdates: true)


    let image = UIGraphicsGetImageFromCurrentImageContext()!
    UIGraphicsEndImageContext()
    return image
}

#1