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【WatchKit】How to make an animated background Interface in Apple WatchKit(Watchkitで背景画像をアニメーションさせる方法)

Last updated at Posted at 2015-04-09

デモ

jacksonnn-compressor.gif

実現方法

Watchkitで背景画像をアニメーションさせる方法
まずWatchKitではSubview的にinterfaceを重ねられません。
どうするかというと、WKInterfaceGroupを利用します。

WKInterfaceGroupのsetBackgroundImageメソッドにて画像を割り当てて、
その画像でUIImage型の配列を指定(animatedImageWithImages)にてアニメーションが可能となります。

ソース



https://gist.github.com/0ba3d3f4b0b0b2e2bd08.js

File: InterfaceController.swift
-------------------------

     @IBOutlet weak var bg: WKInterfaceGroup!

    override func awakeWithContext(context: AnyObject?) {
        var images: [UIImage] = []

        for (var i=1; i<71; i++){
            images.append(UIImage(named:String(format:"jackson%d.jpg", i))!)
        }

        let animatedImage = UIImage.animatedImageWithImages(
            images,
            duration: 5)

        self.bg.setBackgroundImage(animatedImage)
        self.bg.startAnimatingWithImagesInRange(
                    NSRange(location: 0, length: 70),
                    duration: 5,
                    repeatCount: 0)
    }

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