在 SpriteKit 中使用 Swift 截取和分享屏幕截图

Question

我刚刚在 SpriteKit 中使用 Swift 制作了一个简单的游戏。在结束场景中，它显示得分、分享和重新开始按钮。

结束场景截图分享功能还在等待中。我在这里找到了一个非常简单的解决方案，https://www.frispgames.com/sharing-a-screenshot-on-ios-using-swift-and-sprite-kit/

我不是专业人士，因此到目前为止，我为实现此解决方案所做的所有尝试都是徒劳的。

shareScore()当玩家点击shareButton()但它不起作用时，我试图调用函数（如该解决方案中所写）。

这是我的 EndScene 代码

var restartBtn = SKSpriteNode()
var shareBtn = SKSpriteNode()
var scoreLbl = SKLabelNode()
var score = Int()


override func didMoveToView(view: SKView) {

    scene!.scaleMode = .AspectFill

    self.view?.backgroundColor = UIColor.grayColor()

    scoreLabel()

    shareBtn = SKSpriteNode(imageNamed: "Share")
    shareBtn.position = CGPointMake(self.frame.width / 2, self.frame.height / 3)
    shareBtn.setScale(0.0005)
    self.addChild(shareBtn)

    restartBtn = SKSpriteNode(imageNamed: "Restart")
    restartBtn.position = CGPointMake(self.frame.width / 2, self.frame.height / 4)
    restartBtn.setScale(0.0005)

    self.addChild(restartBtn)
}


func scoreLabel() {

    let scoreDefault = NSUserDefaults.standardUserDefaults()
    score = scoreDefault.valueForKey("score") as! NSInteger

    scoreLbl.position = CGPoint(x: self.frame.width / 2, y: self.frame.height / 2)
    scoreLbl.fontSize = 40
    scoreLbl.setScale(0.001)
    scoreLbl.text = "Score: \(score)"

    self.addChild(scoreLbl)
}


override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {

    for touch in touches {

        let location = touch.locationInNode(self)

        if restartBtn.containsPoint(location) {

            let gameScene = GameScene(fileNamed: "GameScene")
            let transition = SKTransition.fadeWithDuration(0.5)
            let skView = self.view! as SKView
            skView.ignoresSiblingOrder = true
            gameScene?.scaleMode = .AspectFill
            skView.presentScene(gameScene!, transition: transition)

        } else if shareBtn.containsPoint(location) {

            // Function for sharing screenshot should be called here
        }
    }

}

Answer 1

你没有展示你是如何使用shareScore()函数的，所以我从你给出的教程中为你创建了一个简单的例子，它工作正常，下面是完整的示例代码：

import SpriteKit

class GameScene: SKScene {

    let sprite = SKSpriteNode(imageNamed:"Spaceship")

    override func didMoveToView(view: SKView) {

        sprite.xScale = 0.5
        sprite.yScale = 0.5
        sprite.position = CGPoint(x:CGRectGetMidX(self.frame), y:CGRectGetMidY(self.frame))

        self.addChild(sprite)
    }

    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {

        for touch in touches {

            let location = touch.locationInNode(self)

             if sprite.containsPoint(location) {

                let postText: String = "Check out my score! Can you beat it?"
                let postImage: UIImage = getScreenshot(scene!)
                let activityItems = [postText, postImage]
                let activityController = UIActivityViewController(
                    activityItems: activityItems,
                    applicationActivities: nil
                )

                let controller: UIViewController = scene!.view!.window!.rootViewController!

                controller.presentViewController(
                    activityController,
                    animated: true,
                    completion: nil
                )
            }
        }

    }

    func getScreenshot(scene: SKScene) -> UIImage {
        let snapshotView = scene.view!.snapshotViewAfterScreenUpdates(true)
        let bounds = UIScreen.mainScreen().bounds

        UIGraphicsBeginImageContextWithOptions(bounds.size, false, 0)

        snapshotView.drawViewHierarchyInRect(bounds, afterScreenUpdates: true)

        let screenshotImage : UIImage = UIGraphicsGetImageFromCurrentImageContext()

        UIGraphicsEndImageContext()

        return screenshotImage;
    }
}

当你点击 Spaceship 图片时，你会得到如下结果：

现在您可以轻松共享它。

更多信息的示例代码。