底部触控条背景色修改

lib/main.dart

+import 'dart:io';
+
 import 'package:chart/pages/frame/product/bindings.dart';
 import 'package:chart/pages/home/index.dart';
 import 'package:flutter/material.dart';
@@ -7,6 +9,7 @@ import 'package:chart/common/store/store.dart';
 import 'package:chart/common/style/style.dart';
 import 'package:chart/common/utils/utils.dart';
 import 'package:chart/global.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_easyloading/flutter_easyloading.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
@@ -23,6 +26,13 @@ void main() async {
       backgroundOpacity: 0.2,
       borderOpacity: 0.5));
   runApp(ChatApp());
+
+  /// Android的一些全局配置項
+  if(Platform.isAndroid) {
+    var systemUiOverlayStyle =
+    const SystemUiOverlayStyle(systemNavigationBarColor: Colors.black);
+    SystemChrome.setSystemUIOverlayStyle(systemUiOverlayStyle);
+  }
 }
 
 class ChatApp extends StatelessWidget {