如何為45mm提供AppleWatch復雜功能資源？

結果（影像太小，無法填滿空間）：

我已經讀到我需要為 40/42mm 使用 PDF 資源，但我的影像是光柵影像，因此我無法將其創建為 PDF。我想自己縮放影像并將其添加為資產，但沒有選項可以洗掉它。

我應該怎么辦？

uj5u.com熱心網友回復：

問題是資產目錄中的影像尺寸小于Apple Human Interface Guidelines所規定的實際尺寸。因此，這會導致影像不被填充。由于無法洗掉 45mm 版本，您需要自己計算和調整影像大小。

這篇文章就是解決方案！

http://www.glimsoft.com/02/18/watchos-complications/?utm_campaign=iOS+Dev+Weekly&utm_medium=web&utm_source=iOS+Dev+Weekly+Issue+547

ComplicationController Ext.swift

extension ComplicationController {
    enum ComplicationImageType {
        case graphicCircularImage
    }
    
    struct ComplicationImageSizeCollection {
        var size38mm: CGFloat = 0
        let size40mm: CGFloat
        let size41mm: CGFloat
        let size44mm: CGFloat
        let size45mm: CGFloat
        
        // The following sizes are taken directly from HIG: https://developer.apple.com/design/human-interface-guidelines/watchos/overview/complications/
        static let graphicCircularImageSizes = ComplicationImageSizeCollection(size40mm: 42, size41mm: 44.5, size44mm: 47, size45mm: 50)
        
        func sizeForCurrentWatchModel() -> CGFloat {
            let screenHeight = WKInterfaceDevice.current().screenBounds.size.height
            if screenHeight >= 242 {
                // It's the 45mm version..
                return self.size45mm
            }
            else if screenHeight >= 224 {
                // It's the 44mm version..
                return self.size44mm
            }
            else if screenHeight >= 215 {
                // It's the 41mm version..
                return self.size41mm
            }
            else if screenHeight >= 197 {
                return self.size40mm
            }
            else if screenHeight >= 170 {
                return self.size38mm
            }
            return self.size40mm    // Fallback, just in case.
        }
        
        static func sizes(for type: ComplicationImageType) -> ComplicationImageSizeCollection {
            switch type {
            case .graphicCircularImage: return Self.graphicCircularImageSizes
            }
        }
        
        static func getImage(for type: ComplicationImageType) -> UIImage {
            let complicationImageSizes = ComplicationImageSizeCollection.sizes(for: .graphicCircularImage)
            let width = complicationImageSizes.sizeForCurrentWatchModel()
            let size = CGSize(width: width, height: width)
            
            var filename: String!
            
            switch type {
            case .graphicCircularImage: filename = "gedenken_graphic_circular_pdf"
            }
            
            return renderPDFToImage(named: filename, outputSize: size)
        }
        
        static private func renderPDFToImage(named filename: String, outputSize size: CGSize) -> UIImage {
            
            // Create a URL for the PDF file
            let resourceName = filename.replacingOccurrences(of: ".pdf", with: "")
            let path = Bundle.main.path(forResource: resourceName, ofType: "pdf")!
            let url = URL(fileURLWithPath: path)
            
            guard let document = CGPDFDocument(url as CFURL),
                  let page = document.page(at: 1) else {
                fatalError("We couldn't find the document or the page")
            }
            
            let originalPageRect = page.getBoxRect(.mediaBox)
            
            // With the multiplier, we bring the pdf from its original size to the desired output size.
            let multiplier = size.width / originalPageRect.width
            
            UIGraphicsBeginImageContextWithOptions(size, false, 0)
            let context = UIGraphicsGetCurrentContext()!
                
            // Translate the context
            context.translateBy(x: 0, y: (originalPageRect.size.height * multiplier))
            
            // Flip the context vertically because the Core Graphics coordinate system starts from the bottom.
            context.scaleBy(x: multiplier * 1.0, y: -1.0 * multiplier)
            
            // Draw the PDF page
            context.drawPDFPage(page)
            
            let image = UIGraphicsGetImageFromCurrentImageContext()!
            UIGraphicsEndImageContext()
            
            return image
        }
    }
}

復雜控制器.swift

func createGraphicCircularTemplate() -> CLKComplicationTemplate {
    let template = CLKComplicationTemplateGraphicCircularImage()
    let imageLogoProvider = CLKFullColorImageProvider()
    
    imageLogoProvider.image = ComplicationImageSizeCollection.getImage(for: .graphicCircularImage)
    template.imageProvider = imageLogoProvider
    
    return template
}

標籤：迅速 代码 斯威夫特5 苹果手表 手表

上一篇：Xcode的Homebrew路徑變數

下一篇：如何將名稱從json保存到swift中的串列