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    跨平台開發的過去、現在與未來 === ###### tags: `2018`, `R3` ##### 位置: R3 ##### 講者:許子駿 {%slideshare 貼這裡xxxx/yyyy %} [Slides](https://slides.com/apolkingg8/mopcon_2018/#/) --- ## APP很夯 工程師不夠,時間不夠,所以要簡單易學快速產出的phonega 優點:簡單、架構快速。 缺點:硬體效能瓶頸、擴充限制。 ## APP紅海 要求有質感、擴充能力, 出現了 nativeScript、react native。 ### nativeScript ![](https://imgur.com/DPtithN.png) 優點:即時支援 缺點:單線程模型、整合性差、起步不佳、需要大量原生知識 近況不錯,如果有豐富原生知識可以考慮。 ### React native 手動橋接,Yoga(自己的layout機制) 優點:架構靈活(與原生沾黏較少)、可移植性佳 #### Airbnb like 良好的rendering performance以及抽象 可擴展性 #### Airbnb doesn't like - Long list performance - Not mature enougth > 當時的react native還不夠成熟 - Spend a lot of time on bridging, but only - a bit code share > 成本上較不划算 - Hard to build a corss-platform mobile team > 較沒有範例可循 #### 問題 - Long list performance - RN core refactoring - Too much existing native libs - Progressive, partially - Team building - 團隊成員需要有跨平台知識 React Native 社群龐大,資源豐富,相對成熟,入門首選 ![](https://imgur.com/a1F4bMg.png) ## Electron 效能不佳 ### init performance improve - Lazy require - VSCode vs Atom - File pack - Reduce IO - Early start - Single instance 專注功能、無特殊需求,可選擇Electron ## smart TV 一場悲劇QQ ### Web-based solution issue - Browser compatibility - 造成很多問題 - Device issue - Old device performance - -Upgrade rate - 升級週期緩慢 #### 開發問題 - 輸入設計,一般使用遙控器選擇輸入字詞,需要更注意UX設計。 > 自動填補相對應關鍵字或熱門影片可改善 - 遙控器差異巨大,同按鈕行為不同接取資料方式也不同。 - 吃力不討好 ## What's the problem with NS/RN? - Different component props & gestures between platforms - 要像ReactXP一樣再做一層抽象 - Bridging cost - 而且JS的context switch成本高 - JavaScript is a script language - Performance - Init time ## Flutter - Code 共享 - 不同平台使用同組component - 可移植性佳 - 跟原生沾黏性比react更少 - Dart - JIT & AOT compile ### 為什麼要跳坑 Flutter - High performance rendering? - RN & NS can also do 60fps animation - Code sharing? - RN & NS can also share a lot of code - Portability? - Not yet. RN & Web-based solution already have - not Stable - 你要自己解決這些核心問題嗎? - small ecosystem - 你要自己造輪子嗎? ### 要怎麼使用它 不要使用於main project,可於side project 玩玩看,投資未來,容易移植至其他平台。 架構完整,可以關注他的生態圈發展。 ## PWA 讓你的Web可以離線存取、長得很像原生APP ### 適合使用 - Content orientation - 內容導向為主 (例如教育、新聞及食物等等) - No platform feature requirement - 沒有相機等需求 ### 不適合 - Integration with existing native app - Non-morden browser market - 支援度混亂 - 轉換率不佳 - 資料流複雜 ## 未來 Flutter - 平台多樣化 - 需求逐漸增加 PWA - 軟硬體升級,效能問題減小 ## 總結 - Code共享&移植性 - RN各平台支援度各不相同 - NS跟各平台沾黏性較高 - 學習曲線 - Flutter較好上手,因為沒有複雜的bridge機制 - NS最難上手 > It's never been a goal for React Native to replace all other technologies – we are focused on making React Native itself better.[name= react native]

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