Image uploading on iOS

Presented at 関西モバイルアプリ研究会 #2

1. iOSͰͷ ը૾Ξοϓϩʔυ
2. cockscomb
4. iOSͰͷ ը૾Ξοϓϩʔυ
5. ԿΛ͍·͞Β w J04ͷਐԽʹ൐ͬͯ࠷৽ͷख๏Λ঺հ͍ͨ͠
   w ϕετϓϥΫςΟεͰ͢
6. ը૾Ξοϓϩʔυͷखॱ  1IPUP
   -JCSBSZ͔ΒσʔλΛऔಘ
    ը૾ͷՃ޻
    ਖ਼͍͠޲͖ʹճస
    ඞཁͳαΠζʹॖখ
    ద੾ͳܗࣜʹѹॖ
    Ξοϓϩʔυ
7. σʔλΛऔಘ • UIImagePickerController • UIImagePickerControllerOriginalImage • UIImagePickerControllerEditedImage • AssetsLibrary • Photos
8. σʔλΛऔಘ let asset: PHAsset var originalData: NSData? var type: UTI? var imageOrientation: UIImageOrientation = .Up let options = PHImageRequestOptions() options.synchronous = true options.version = .Current let imageManager = PHImageManager.defaultManager() imageManager.requestImageDataForAsset(asset, options: options) { (imageData, dataUTI, orientation, info) -> Void in originalData = imageData type = UTI(dataUTI) imageOrientation = orientation }
9. ը૾ͷՃ޻ w 6*,JU
   w $PSF
   (SBQIJDT
   w $PSF
   *NBHF
10. ਖ਼͍͠޲͖ʹճస var image = CIImage(CGImage: originalImage) // See: kCGImagePropertyOrientation var orientationValue: Int32 = 1 switch orientation { case .Up: break case .Down: orientationValue = 3 case .Left: orientationValue = 8 case .Right: orientationValue = 6 ... } image = image.imageByApplyingOrientation(orientationValue)
11. ඞཁͳαΠζʹॖখ var image: CIImage let scale: CGFloat = 0.5 let lanczosResamplingFilter = CIFilter( name: "CILanczosScaleTransform", withInputParameters: [ "inputImage" : image, "inputScale" : scale, ]) image = lanczosResamplingFilter.outputImage
12. ద੾ͳܗࣜʹѹॖ let context = CIContext(options: [:]) let scaledImage = context.createCGImage(image, fromRect: image.extent()) let processedData = NSMutableData() let destination = CGImageDestinationCreateWithData( processedData, type.UTIString, 1, nil) CGImageDestinationAddImage(destination, scaledImage, [ kCGImageDestinationLossyCompressionQuality as String : 0.8, ] as [ String : AnyObject ]) CGImageDestinationFinalize(destination)
13. Ξοϓϩʔυ w ϚϧνύʔτϦΫΤετͱ͔Ͱ
    w ͦΕͧΕ͕Μ͹Δ
14. ը૾Ξοϓϩʔυͷखॱ  1IPUP
    -JCSBSZ͔ΒσʔλΛऔಘ
     ը૾ͷՃ޻
     ਖ਼͍͠޲͖ʹճస
     ඞཁͳαΠζʹॖখ
     ద੾ͳܗࣜʹѹॖ
     Ξοϓϩʔυ
15. ௥ิ w શମΛNSOperationͷαϒΫϥεͳͲͰ࡞Δͱ Α͍
    w $PSF
    *NBHFΛ࢖͏ͱ͖ɺՄೳͳΒCIContext ͸࢖͍ճ͢ͱΑ͍
16. iOSͰͷ ը૾Ξοϓϩʔυ