feat: 整体常用控件封装，常用工具类。首页数据对接

lib/main/lib_file.dart

@@ -5,4 +5,6 @@ export 'package:skywood/global/const/common_color.dart';
 export 'package:skywood/global/const/common_string.dart';
 
 export 'package:skywood/utils/tools/app_screen.dart';
-export 'package:skywood/utils/tools/help_img.dart';
+export 'package:skywood/utils/tools/help_img.dart';
+
+export 'package:flutter_screenutil/flutter_screenutil.dart';

lib/main/main_root.dart

@@ -58,17 +58,9 @@ class _MainRootState extends State<MainRoot> {
         minimum: EdgeInsets.only(bottom: 10.h),
         child: Stack(
           children: [
-            SizedBox(
-              height: 49.h, width: 345.w,
-            ),
-            Positioned(
-              top: 11.h,
-              child: _buildTabBar(),
-            ),
-            Positioned(
-              top: 0, left: 15.w,
-              child: _buildImgs(),
-            )
+            SizedBox(height: 49.h, width: 345.w),
+            Positioned(top: 11.h, child: _buildTabBar()),
+            Positioned(top: 0, left: 15.w, child: _buildImgs()),
           ],
         ),
       ),
@@ -76,8 +68,9 @@ class _MainRootState extends State<MainRoot> {
   }
 
   Widget _buildImgs() {
-    return Container(
-      height: 38.h, width: 345.w,
+    return SizedBox(
+      height: 38.h,
+      width: 345.w,
       child: Row(
         mainAxisAlignment: MainAxisAlignment.spaceAround,
         children: List.generate(_items.length, (index) {