CSStickyHeaderFlowLayout很快 [英] CSStickyHeaderFlowLayout swift

问题描述

我正在尝试使用CSStickyHeaderFlowLayout
在我的应用中制作视差照片效果 - https：// github.com/jamztang/CSStickyHeaderFlowLayout/
和Swift语言。

I'm trying to make parallax photo effect in my app using CSStickyHeaderFlowLayout - https://github.com/jamztang/CSStickyHeaderFlowLayout/ and Swift language.

我已安装必要的Pod文件，添加#importCSStickyHeaderFlowLayout.h到我的appName-Bridging-Header.h文件，并实现了这个方法：

I have installed necessary Pod's file, add #import "CSStickyHeaderFlowLayout.h" to my "appName"-Bridging-Header.h file, and implemented this method:

func collectionView(collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView {

    var cell: UICollectionViewCell = UICollectionViewCell(frame: CGRectMake(0, 0, 400, 200));
    var imageView: UIImageView = UIImageView();
    var image: UIImage  = UIImage(named: "news2.jpg")!;
    imageView.image = image;
    cell.addSubview(imageView);
    return cell;

}

但现在我很难翻译这个Obj-C代码到Swift：

but now I have difficulties to translate this Obj-C code to Swift:

CSStickyHeaderFlowLayout *layout = (id)self.collectionViewLayout;
if ([layout isKindOfClass:[CSStickyHeaderFlowLayout class]]) {
    layout.parallaxHeaderReferenceSize = CGSizeMake(320, 200);
}

在我看来，在那一步之后，我的效果应该有效。我对吗？或者我错过了什么？

In my opinion after that step my effect should works. Am I right? Or I have missed something?

感谢您的帮助，
m.af

Thanks for help, m.af

推荐答案

你应该能够在Swift中这样做吗？

You should be able to do it like this in Swift

if let layout = self.collectionViewLayout as? CSStickyHeaderFlowLayout {
    layout.parallaxHeaderReferenceSize = CGSizeMake(320, 200)
}

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