Extension SharingCustom Keyboard in iOS 8

Grady Zhuo• iOS Developer

• iOS 開發經驗2年

• 使⽤用開發語⾔言：

• Objective-C

• Python

• Swift

ExtensionApple’s Plan for a Powerful App Ecosystem

什麼是 Extension

• 為特定⺫⽬目的建制的⼆二進位檔

• 不是App

• 透過Apple的Framework程式呼叫 - 不能⾃自已呼叫Extension

• ⾮非App對App的IPC呼叫 - Extension也不是App

• App間呼叫依然採⽤用-[UIApplication openURL:]

Extension的運作

Extension的運作(獨⽴立)

Containing app

App extension

Host app

Request

Response

Extension的運作(間接)

Containing app Shared

resources

Open URL

App extension

Host app

Request

ResponseRead/Write

Read/Write

Extension的⽣生命週期

App extension ⽣生命週期

1.使⽤用者選⽤用Extension4.系統刪除Extension

3. 執⾏行載具App中Extension 2.系統啟動選⽤用的Extension

Custom Keyboard⾃自已的鍵盤，⾃自已刻！

Custom Keyboard• Bundle Configuration as App

• UIKit Framework

• UIInputViewController - as ViewController Life-cycle

• viewDidLoad

• viewWillAppear

• viewDidAppear

• viewWillDisappear

• viewDidDisapper

Keyboard 呼叫流程

Custom Keyboard

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Running Keyboard

UIInputViewController

Next Keyboard

View

Hello

UIButton

insertText:

Containing App

Custom Keyboard Target

Xcode ProjectApp Extension Target Template

hello

UITextDocumentProxy

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Running Keyboard

UIInputViewController

Next Keyboard

View

Hello

textDocumentProxy <UITextDocumentProxy>

UIInputViewController

UIKit Framework

insertText:

Info.plist Extended Keys

• PrimaryLanguage：鍵盤主要對應的語⾔言 ex. zh-TW, en-US,…

• NSExtensionPrincipalClass：Extension啟動時主要的Class

✦ Swift需完整Namespace

✦ ex. MyModule.KeyboardViewController

✦ 也可⽤用NSMainStoryboard代替

• App Extension Key參考⽂文件

PrimaryLanguage

PrimaryLanguage

RequestsOpenAccess的功⽤用• 可根據使⽤用者位置與聯絡資訊改善鍵盤

• 可與Server連線

• 可與Keyboard Containing App 進⾏行共通資源的設定

• 可同步⾄至iCloud，使所有裝置都有相同的偏好設定與資源

• 可以透過Containing App 提供In app purchase或GameCenter⽀支援

• 需使⽤用者同意，請參閱Designing for User Trust

Demo

建⽴立Keyboard Extension

1. ⾄至專案設定加⼊入⼀一個新的Target

2. 選擇Custom Keyboard

3. 設定Extension專案資料

4. 按Activate

設定鍵盤主要語系為中⽂文

5. 開啟Keyboard的Info.plist這裡也可以從專案檔選取Target設定

6.展開⾄至NSExtensionAttribute

7. 修改PrimaryLanguagezh-TW就是台灣使⽤用的繁體中⽂文

Q & A

感謝聆聽