Flutter Theme Widget（主題組件）簡單自定義及切換

Theme 主題即在咱們的應用程序中共享顏色和字體樣式，好比導航欄顏色、標題字體、Icon樣式等web 實現 import 'package:flutter/material.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildC

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