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
1.8k
GraphQL放談
cockscomb
4
1.9k
GraphQL Highway
cockscomb
28
8.3k
吉田を支える技術
cockscomb
0
2.2k
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
1.8k
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
7.4k
あなたの知らない UIKit の世界 — UITableView に UITextView を置きたい
cockscomb
1
7.4k
Other Decks in Programming
See All in Programming
5分で理解する SOLID 原則 #phpcon_nagoya
shogogg
1
300
1年目の私に伝えたい!テストコードを怖がらなくなるためのヒント/Tips for not being afraid of test code
push_gawa
1
500
たのしいSocketのしくみ / Socket Under a Microscope
coe401_
8
1.2k
PRレビューのお供にDanger
stoticdev
1
230
Rubyで始める関数型ドメインモデリング
shogo_tksk
0
140
Jasprが凄い話
hyshu
0
150
クリーンアーキテクチャから見る依存の向きの大切さ
shimabox
5
950
Rails アプリ地図考 Flush Cut
makicamel
1
130
dbt Pythonモデルで実現するSnowflake活用術
trsnium
0
260
Open source software: how to live long and go far
gaelvaroquaux
0
660
CDK開発におけるコーディング規約の運用
yamanashi_ren01
2
250
『GO』アプリ バックエンドサーバのコスト削減
mot_techtalk
0
170
Featured
See All Featured
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
32
2.1k
Faster Mobile Websites
deanohume
306
31k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
33
2.8k
A Modern Web Designer's Workflow
chriscoyier
693
190k
Six Lessons from altMBA
skipperchong
27
3.6k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k
Sharpening the Axe: The Primacy of Toolmaking
bcantrill
40
2k
Speed Design
sergeychernyshev
27
810
Code Reviewing Like a Champion
maltzj
521
39k
Typedesign – Prime Four
hannesfritz
40
2.5k
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
4
360
The Art of Programming - Codeland 2020
erikaheidi
53
13k
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