feature：适配深色模式，现仅支持跟随系统

lib/components/loading.dart

@@ -63,7 +63,9 @@ class _LoadingDialog extends State<NetLoadingDialog> {
             height: 120.0,
             child: new Container(
               decoration: ShapeDecoration(
-                color: Colors.white,
+                color: Theme.of(context).brightness == Brightness.dark
+                    ? Colors.black
+                    : Colors.white,
                 shape: RoundedRectangleBorder(
                   borderRadius: BorderRadius.all(
                     Radius.circular(8.0),

lib/main.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:fluro/fluro.dart';
+import 'package:flutter_picgo/resources/theme_colors.dart';
 import 'package:flutter_picgo/routers/application.dart';
 import 'package:flutter_picgo/routers/routers.dart';
 import 'package:flutter_picgo/utils/db_provider.dart';
@@ -12,7 +13,6 @@ void main() async {
 }
 
 class App extends StatelessWidget {
-
   App() {
     final router = new Router();
     Routes.configureRoutes(router);
@@ -24,22 +24,8 @@ class App extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       debugShowCheckedModeBanner: false,
-      theme: ThemeData(
-        // This is the theme of your application.
-        //
-        // Try running your application with "flutter run". You'll see the
-        // application has a blue toolbar. Then, without quitting the app, try
-        // changing the primarySwatch below to Colors.green and then invoke
-        // "hot reload" (press "r" in the console where you ran "flutter run",
-        // or simply save your changes to "hot reload" in a Flutter IDE).
-        // Notice that the counter didn't reset back to zero; the application
-        // is not restarted.
-        primarySwatch: Colors.blue,
-        // This makes the visual density adapt to the platform that you run
-        // the app on. For desktop platforms, the controls will be smaller and
-        // closer together (more dense) than on mobile platforms.
-        visualDensity: VisualDensity.adaptivePlatformDensity,
-      ),
+      theme: lightThemeData,
+      darkTheme: darkThemeData,
       initialRoute: '/',
       onGenerateRoute: Application.router.generator,
     );

lib/resources/theme_colors.dart

@@ -0,0 +1,66 @@
+import 'package:flutter/material.dart';
+
+// Light Theme Color
+
+const MaterialColor light = MaterialColor(lightPrimaryValue, <int, Color>{
+  50: Color(0xFFE9F2FD),
+  100: Color(0xFFC7E0F9),
+  200: Color(0xFFA2CBF5),
+  300: Color(0xFF7DB6F1),
+  400: Color(0xFF61A6EE),
+  500: Color(lightPrimaryValue),
+  600: Color(0xFF3E8EE9),
+  700: Color(0xFF3683E5),
+  800: Color(0xFF2E79E2),
+  900: Color(0xFF1F68DD),
+});
+
+const int lightPrimaryValue = 0xFF4596EB;
+
+// Dark
+
+const MaterialColor dark = MaterialColor(_darkPrimaryValue, <int, Color>{
+  50: Color(0xFFE2E3E3),
+  100: Color(0xFFB8B8B8),
+  200: Color(0xFF888989),
+  300: Color(0xFF58595A),
+  400: Color(0xFF353636),
+  500: Color(_darkPrimaryValue),
+  600: Color(0xFF0F1011),
+  700: Color(0xFF0C0D0E),
+  800: Color(0xFF0A0A0B),
+  900: Color(0xFF050506),
+});
+const int _darkPrimaryValue = 0xFF111213;
+
+// accent
+const MaterialColor accent = MaterialColor(_accentValue, <int, Color>{
+  50: Color(0xFFFCE9EC),
+  100: Color(0xFFF9C9D0),
+  200: Color(0xFFF5A5B1),
+  300: Color(0xFFF08192),
+  400: Color(0xFFED667A),
+  500: Color(_accentValue),
+  600: Color(0xFFE7445B),
+  700: Color(0xFFE43B51),
+  800: Color(0xFFE13347),
+  900: Color(0xFFDB2335),
+});
+
+const int _accentValue = 0xFFEA4B63;
+
+// 主题
+
+final ThemeData lightThemeData = ThemeData(
+  brightness: Brightness.light,
+  primarySwatch: light,
+  primaryColor: light,
+  accentColor: light,
+);
+
+final ThemeData darkThemeData = ThemeData(
+  brightness: Brightness.dark,
+  primarySwatch: dark,
+  primaryColor: dark,
+  accentColor: accent,
+);