flutterp01
A new Flutter project.
Widget 概念
Widget並不真正的渲染對象 Flutter 中渲染是經歷了 Widget -> Element -> RenderObject
- statefulwidget:State的build 方法去構建控制項。在 State 中，你可以動態改變數 setState之後改變的數據會觸發Widget重新構建刷新
- StatelessWidget:通過build方法返回一個佈局好的控制項
Layout 概念
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Container :最基礎包含一個 widget 的單位
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https://api.flutter.dev/flutter/widgets/Container-class.html
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Center ：強制置中的作法,只有一個child
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Column : 多個widget, children為 List, 綁成一個column
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Row : 多個wideget , children為 List, 綁成一個row
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Expanded : 充滿 （沒用過）
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Padding https://api.flutter.dev/flutter/widgets/Padding-class.html
ThemeData 和 context 概念
- ThemeData 全局共用資訊
- context 保存全局資訊
- Theme.of(context).textTheme
- Theme.of(context).accentColor ...
controllere概念
In flutter, controllers are a means to give control to the parent widget over its child state.
The main selling point of controllers is that they remove the need of a GlobalKey to access the widget State. This, in turn, makes it harder to do anti-pattern stuff and increase performances.
Controllers also allow having a complex API without having thousands of callbacks on the widget. They also allow to not "lift the state up", as the State is still managed by the child.
customize the behavior of a widget. You can pass a custom implementation of a controller.
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AnimationController 11/15說到
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HeroController （yet)
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TextEditingController (yet)
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11/15應該說到 animatedController /CurvedAnimation / 些許list
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11/22 更多animation / dataTable /StreamController/StreamBuilder
api 資源
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package 查詢 https://pub.dev/ 文件 https://pub.dev/documentation/
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flutter 原生元件 https://api.flutter.dev/
flutter web
https://flutter.dev/docs/get-started/web
- flutter channel master
- flutter upgrade
- flutter config --enable-web
- cd
- flutter create .
- flutter run -d chrome
flutter macos
- flutter config --enable-macos-desktop
- flutter devices
- flutter create --macos
詳細方法