Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Image uploading on iOS
Search
cockscomb
May 21, 2015
Programming
0
1.7k
Image uploading on iOS
Presented at 関西モバイルアプリ研究会 #2
cockscomb
May 21, 2015
Tweet
Share
More Decks by cockscomb
See All by cockscomb
jq at the Shortcuts
cockscomb
1
1.9k
GraphQL放談
cockscomb
4
2k
GraphQL Highway
cockscomb
28
8.5k
吉田を支える技術
cockscomb
0
2.3k
コーポレートサイトを静的化してAmplify Consoleにデプロイする
cockscomb
0
3.4k
ユーザインターフェイスと非同期処理
cockscomb
5
1.9k
GUIアプリケーションの構造と設計
cockscomb
10
10k
イカリング2におけるシングルページアプリケーション
cockscomb
2
7.5k
あなたの知らない UIKit の世界 — UITableView に UITextView を置きたい
cockscomb
1
7.5k
Other Decks in Programming
See All in Programming
The Evolution of Enterprise Java with Jakarta EE 11 and Beyond
ivargrimstad
0
530
構造化・自動化・ガードレール - Vibe Coding実践記 -
tonegawa07
0
150
[Codecon - 2025] Como não odiar seus testes
camilacampos
0
100
Startups on Rails in Past, Present and Future–Irina Nazarova, RailsConf 2025
irinanazarova
0
310
ソフトウェア設計とAI技術の活用
masuda220
PRO
25
6.9k
React は次の10年を生き残れるか:3つのトレンドから考える
oukayuka
40
15k
階層化自動テストで開発に機動力を
ickx
1
430
QA x AIエコシステム段階構築作戦
osu
0
210
商品比較サービス「マイベスト」における パーソナライズレコメンドの第一歩
ucchiii43
0
210
Go製CLIツールをnpmで配布するには
syumai
0
740
なぜあなたのオブザーバビリティ導入は頓挫するのか
ryota_hnk
3
510
코딩 에이전트 체크리스트: Claude Code ver.
nacyot
0
1k
Featured
See All Featured
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
The Power of CSS Pseudo Elements
geoffreycrofte
77
5.9k
The World Runs on Bad Software
bkeepers
PRO
70
11k
Designing for Performance
lara
610
69k
Agile that works and the tools we love
rasmusluckow
329
21k
Music & Morning Musume
bryan
46
6.7k
Documentation Writing (for coders)
carmenintech
72
4.9k
A designer walks into a library…
pauljervisheath
207
24k
Making Projects Easy
brettharned
117
6.3k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
138
34k
Mobile First: as difficult as doing things right
swwweet
223
9.7k
How STYLIGHT went responsive
nonsquared
100
5.7k
Transcript
iOSͰͷ ը૾Ξοϓϩʔυ
cockscomb
None
iOSͰͷ ը૾Ξοϓϩʔυ
ԿΛ͍·͞Β w J04ͷਐԽʹͬͯ࠷৽ͷख๏Λհ͍ͨ͠ w ϕετϓϥΫςΟεͰ͢
ը૾Ξοϓϩʔυͷखॱ 1IPUP-JCSBSZ͔ΒσʔλΛऔಘ ը૾ͷՃ ਖ਼͍͖͠ʹճస ඞཁͳαΠζʹॖখ
దͳܗࣜʹѹॖ Ξοϓϩʔυ
σʔλΛऔಘ • UIImagePickerController • UIImagePickerControllerOriginalImage • UIImagePickerControllerEditedImage • AssetsLibrary •
Photos
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 }
ը૾ͷՃ w 6*,JU w $PSF(SBQIJDT w $PSF*NBHF
ਖ਼͍͖͠ʹճస 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)
ඞཁͳαΠζʹॖখ var image: CIImage let scale: CGFloat = 0.5 let
lanczosResamplingFilter = CIFilter( name: "CILanczosScaleTransform", withInputParameters: [ "inputImage" : image, "inputScale" : scale, ]) image = lanczosResamplingFilter.outputImage
దͳܗࣜʹѹॖ 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)
Ξοϓϩʔυ w ϚϧνύʔτϦΫΤετͱ͔Ͱ w ͦΕͧΕ͕ΜΔ
ը૾Ξοϓϩʔυͷखॱ 1IPUP-JCSBSZ͔ΒσʔλΛऔಘ ը૾ͷՃ ਖ਼͍͖͠ʹճస ඞཁͳαΠζʹॖখ
దͳܗࣜʹѹॖ Ξοϓϩʔυ
ิ w શମΛNSOperationͷαϒΫϥεͳͲͰ࡞Δͱ Α͍ w $PSF*NBHFΛ͏ͱ͖ɺՄೳͳΒCIContext ͍ճ͢ͱΑ͍
iOSͰͷ ը૾Ξοϓϩʔυ