修改release无效的bug

.packages

@@ -1,56 +1,56 @@
-# Generated by pub on 2018-09-21 00:18:30.075689.
-analyzer:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/analyzer-0.32.4/lib/
-args:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/args-1.5.0/lib/
-async:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/async-2.0.8/lib/
-boolean_selector:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/boolean_selector-1.0.4/lib/
-charcode:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/charcode-1.1.2/lib/
-collection:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/collection-1.14.11/lib/
-convert:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/convert-2.0.2/lib/
-crypto:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/crypto-2.0.6/lib/
-csslib:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/csslib-0.14.5/lib/
-flutter:file:///d:/flutter/packages/flutter/lib/
-flutter_test:file:///d:/flutter/packages/flutter_test/lib/
-front_end:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/front_end-0.1.4/lib/
-glob:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/glob-1.1.7/lib/
-html:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/html-0.13.3+3/lib/
-http:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/http-0.11.3+17/lib/
-http_multi_server:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/http_multi_server-2.0.5/lib/
-http_parser:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/http_parser-3.1.3/lib/
-io:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/io-0.3.3/lib/
-js:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/js-0.6.1+1/lib/
-json_rpc_2:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/json_rpc_2-2.0.9/lib/
-kernel:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/kernel-0.3.4/lib/
-logging:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/logging-0.11.3+2/lib/
-matcher:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/matcher-0.12.3+1/lib/
-meta:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/meta-1.1.6/lib/
-mime:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/mime-0.9.6+2/lib/
-multi_server_socket:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/multi_server_socket-1.0.2/lib/
-node_preamble:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/node_preamble-1.4.4/lib/
-package_config:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/package_config-1.0.5/lib/
-package_resolver:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/package_resolver-1.0.4/lib/
-path:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/path-1.6.2/lib/
-plugin:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/plugin-0.2.0+3/lib/
-pool:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/pool-1.3.6/lib/
-pub_semver:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/pub_semver-1.4.2/lib/
-quiver:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/quiver-2.0.0+1/lib/
-shelf:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/shelf-0.7.3+3/lib/
-shelf_packages_handler:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/shelf_packages_handler-1.0.4/lib/
-shelf_static:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/shelf_static-0.2.8/lib/
-shelf_web_socket:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/shelf_web_socket-0.2.2+4/lib/
-sky_engine:file:///d:/flutter/bin/cache/pkg/sky_engine/lib/
-source_map_stack_trace:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/source_map_stack_trace-1.1.5/lib/
-source_maps:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/source_maps-0.10.7/lib/
-source_span:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/source_span-1.4.1/lib/
-stack_trace:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/stack_trace-1.9.3/lib/
-stream_channel:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/stream_channel-1.6.8/lib/
-string_scanner:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/string_scanner-1.0.4/lib/
-term_glyph:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/term_glyph-1.0.1/lib/
-test:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/test-1.3.0/lib/
-typed_data:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/typed_data-1.1.6/lib/
-utf:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/utf-0.9.0+5/lib/
-vector_math:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/vector_math-2.0.8/lib/
-vm_service_client:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/vm_service_client-0.2.6/lib/
-watcher:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/watcher-0.9.7+10/lib/
-web_socket_channel:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/web_socket_channel-1.0.9/lib/
-yaml:file:///d:/flutter/.pub-cache/hosted/pub.flutter-io.cn/yaml-2.1.15/lib/
+# Generated by pub on 2018-09-29 11:16:33.432789.
+analyzer:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/analyzer-0.32.4/lib/
+args:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/args-1.5.0/lib/
+async:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/async-2.0.8/lib/
+boolean_selector:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/boolean_selector-1.0.4/lib/
+charcode:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/charcode-1.1.2/lib/
+collection:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/collection-1.14.11/lib/
+convert:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/convert-2.0.2/lib/
+crypto:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/crypto-2.0.6/lib/
+csslib:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/csslib-0.14.5/lib/
+flutter:file:///D:/flutter/packages/flutter/lib/
+flutter_test:file:///D:/flutter/packages/flutter_test/lib/
+front_end:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/front_end-0.1.4/lib/
+glob:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/glob-1.1.7/lib/
+html:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/html-0.13.3+3/lib/
+http:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/http-0.11.3+17/lib/
+http_multi_server:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/http_multi_server-2.0.5/lib/
+http_parser:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/http_parser-3.1.3/lib/
+io:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/io-0.3.3/lib/
+js:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/js-0.6.1+1/lib/
+json_rpc_2:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/json_rpc_2-2.0.9/lib/
+kernel:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/kernel-0.3.4/lib/
+logging:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/logging-0.11.3+2/lib/
+matcher:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/matcher-0.12.3+1/lib/
+meta:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/meta-1.1.6/lib/
+mime:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/mime-0.9.6+2/lib/
+multi_server_socket:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/multi_server_socket-1.0.2/lib/
+node_preamble:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/node_preamble-1.4.4/lib/
+package_config:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/package_config-1.0.5/lib/
+package_resolver:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/package_resolver-1.0.4/lib/
+path:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/path-1.6.2/lib/
+plugin:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/plugin-0.2.0+3/lib/
+pool:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/pool-1.3.6/lib/
+pub_semver:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/pub_semver-1.4.2/lib/
+quiver:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/quiver-2.0.0+1/lib/
+shelf:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/shelf-0.7.3+3/lib/
+shelf_packages_handler:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/shelf_packages_handler-1.0.4/lib/
+shelf_static:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/shelf_static-0.2.8/lib/
+shelf_web_socket:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/shelf_web_socket-0.2.2+4/lib/
+sky_engine:file:///D:/flutter/bin/cache/pkg/sky_engine/lib/
+source_map_stack_trace:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/source_map_stack_trace-1.1.5/lib/
+source_maps:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/source_maps-0.10.7/lib/
+source_span:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/source_span-1.4.1/lib/
+stack_trace:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/stack_trace-1.9.3/lib/
+stream_channel:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/stream_channel-1.6.8/lib/
+string_scanner:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/string_scanner-1.0.4/lib/
+term_glyph:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/term_glyph-1.0.1/lib/
+test:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/test-1.3.0/lib/
+typed_data:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/typed_data-1.1.6/lib/
+utf:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/utf-0.9.0+5/lib/
+vector_math:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/vector_math-2.0.8/lib/
+vm_service_client:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/vm_service_client-0.2.6/lib/
+watcher:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/watcher-0.9.7+10/lib/
+web_socket_channel:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/web_socket_channel-1.0.9/lib/
+yaml:file:///C:/Users/Frank/AppData/Roaming/Pub/Cache/hosted/pub.flutter-io.cn/yaml-2.1.15/lib/
 flutter_screenutil:lib/

README.md

@@ -28,10 +28,11 @@ import 'package:flutter_screenutil/flutter_screenutil.dart';
 ### 初始化设置尺寸
 在使用之前请设置好设计稿的宽度和高度，传入设计稿的宽度和高度(单位px)
 如果不设置则使用默认尺寸，默认为1080*1920
-推荐在项目入口中设置，以保证在每次使用之前设置好了适配尺寸:
+一定在MaterialApp的home中的页面设置，以保证在每次使用之前设置好了适配尺寸:
 
 ```
-ScreenUtil.instance = new ScreenUtil(width: 360, height: 720);
+//设置适配尺寸 (填入设计稿中设备的屏幕尺寸) 假如设计稿是按iPhone6的尺寸设计的(iPhone6 750*1334)
+    ScreenUtil.instance = ScreenUtil(width: 750, height: 1334)..init(context);
 ```
 
 ### 使用：
@@ -57,13 +58,23 @@ height: ScreenUtil().setHeight(200),
 ```
 
 ```
-import 'package:flutter_app/ScreenUtil.dart';  //导入
+//导入
+import 'package:flutter_screenutil/flutter_screenutil.dart';
 
 ...
 
-
-  @override
+ @override
   Widget build(BuildContext context) {
+    //设置适配尺寸 (填入设计稿中设备的屏幕尺寸) 假如设计稿是按iPhone6的尺寸设计的(iPhone6 750*1334)
+    ScreenUtil.instance = ScreenUtil(width: 750, height: 1334)..init(context);
+    print('设备宽度:${ScreenUtil.screenWidth}'); //设备宽度
+    print('设备高度:${ScreenUtil.screenHeight}'); //设备高度
+    print('设备的像素密度:${ScreenUtil.pixelRatio}'); //设备的像素密度
+    print('底部安全区距离:${ScreenUtil.bottomBarHeight}'); //底部安全区距离，适用于全面屏下面有按键的
+    print('状态栏高度:${ScreenUtil.statusBarHeight}px'); //状态栏高度 刘海屏会更高
+    print('宽度相对于设计稿放大的倍数:${ScreenUtil().scaleWidth}'); //宽度相对于设计稿放大的倍数
+    print('高度相对于设计稿放大的倍数:${ScreenUtil().scaleHeight}'); //高度相对于设计稿放大的倍数
+
     return new Scaffold(
       appBar: new AppBar(
         title: new Text(widget.title),
@@ -96,8 +107,6 @@ import 'package:flutter_app/ScreenUtil.dart';  //导入
             Text('设备的像素密度:${ScreenUtil.pixelRatio}'),
             Text('底部安全区距离:${ScreenUtil.bottomBarHeight}px'),
             Text('状态栏高度:${ScreenUtil.statusBarHeight}px'),
-            Text('宽度相对于设计稿放大的倍数:${ScreenUtil().scaleWidth}'),
-            Text('高度相对于设计稿放大的倍数:${ScreenUtil().scaleHeight}'),
           ],
         ),
       ),

example/lib/main.dart

@@ -7,9 +7,6 @@ class MyApp extends StatelessWidget {
   // This widget is the root of your application.
   @override
   Widget build(BuildContext context) {
-    //假如设计稿是按iPhone6的尺寸设计的(iPhone6 750*1334)
-    ScreenUtil.instance = new ScreenUtil(width: 750, height: 1334);
-
     return new MaterialApp(
       title: 'Flutter Demo',
       theme: new ThemeData(
@@ -34,18 +31,20 @@ class _MyHomePageState extends State<MyHomePage> {
   void initState() {
     // TODO: implement initState
     super.initState();
-    print('设备的像素密度:${ScreenUtil.pixelRatio}'); //设备的像素密度
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    //设置适配尺寸 (填入设计稿中设备的屏幕尺寸) 假如设计稿是按iPhone6的尺寸设计的(iPhone6 750*1334)
+    ScreenUtil.instance = ScreenUtil(width: 750, height: 1334)..init(context);
     print('设备宽度:${ScreenUtil.screenWidth}'); //设备宽度
     print('设备高度:${ScreenUtil.screenHeight}'); //设备高度
+    print('设备的像素密度:${ScreenUtil.pixelRatio}'); //设备的像素密度
     print('底部安全区距离:${ScreenUtil.bottomBarHeight}'); //底部安全区距离，适用于全面屏下面有按键的
     print('状态栏高度:${ScreenUtil.statusBarHeight}px'); //状态栏高度 刘海屏会更高
-
     print('宽度相对于设计稿放大的倍数:${ScreenUtil().scaleWidth}'); //宽度相对于设计稿放大的倍数
     print('高度相对于设计稿放大的倍数:${ScreenUtil().scaleHeight}'); //高度相对于设计稿放大的倍数
-  }
 
-  @override
-  Widget build(BuildContext context) {
     return new Scaffold(
       appBar: new AppBar(
         title: new Text(widget.title),
@@ -78,8 +77,6 @@ class _MyHomePageState extends State<MyHomePage> {
             Text('设备的像素密度:${ScreenUtil.pixelRatio}'),
             Text('底部安全区距离:${ScreenUtil.bottomBarHeight}px'),
             Text('状态栏高度:${ScreenUtil.statusBarHeight}px'),
-            Text('宽度相对于设计稿放大的倍数:${ScreenUtil().scaleWidth}'),
-            Text('高度相对于设计稿放大的倍数:${ScreenUtil().scaleHeight}'),
           ],
         ),
       ),

example/pubspec.lock

@@ -43,6 +43,13 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.14.11"
+  common_utils:
+    dependency: "direct main"
+    description:
+      name: common_utils
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.0.2"
   convert:
     dependency: transitive
     description:
@@ -81,7 +88,7 @@ packages:
     description:
       path: "."
       ref: HEAD
-      resolved-ref: "94af1bacf4c9f89461a592b26fac8eceb1df3343"
+      resolved-ref: "62d8b7d3a3cc4323eca1682166d7aee2890b1468"
       url: "git://github.com/lizhuoyuan/flutter_screenUtil"
     source: git
     version: "0.1.0"

example/pubspec.yaml

@@ -22,6 +22,7 @@ dependencies:
   flutter_screenutil:
     git:
       url: git://github.com/lizhuoyuan/flutter_screenUtil
+  common_utils: ^1.0.2
 dev_dependencies:
   flutter_test:
     sdk: flutter

lib/flutter_screenutil.dart

@@ -1,59 +1,74 @@
 /*
- * Created by 李卓原 on 2018/9/20.
+ * Created by 李卓原 on 2018/9/29.
  * email: zhuoyuan93@gmail.com
- * 设计稿设备尺寸默认为 1080 * 1920 px
  */
 
-import 'dart:ui';
+import 'package:flutter/material.dart';
 
 class ScreenUtil {
-  //请修改成你的设计稿的尺寸
-  static ScreenUtil instance = new ScreenUtil(width: 1080, height: 1920);
+  static ScreenUtil instance = new ScreenUtil();
 
   //设计稿的设备尺寸修改
-  int designWidth;
-  int designHeight;
+  int _designWidth;
+
+  int _designHeight;
+
+  static MediaQueryData _mediaQueryData;
+  static double _screenWidth;
+  static double _screenHeight;
+  static double _pixelRatio;
+  static double _statusBarHeight;
+
+  static double _bottomBarHeight;
 
   ScreenUtil({int width, int height}) {
-    designWidth = width;
-    designHeight = height;
+    _designWidth = width;
+    _designHeight = height;
   }
 
   static ScreenUtil getInstance() {
     return instance;
   }
 
-  //设备的像素密度
-  static double pixelRatio = window.devicePixelRatio;
+  void init(BuildContext context) {
+    MediaQueryData mediaQuery = MediaQuery.of(context);
+    _mediaQueryData = mediaQuery;
+    _pixelRatio = mediaQuery.devicePixelRatio;
+    _screenWidth = mediaQuery.size.width;
+    _screenHeight = mediaQuery.size.height;
+    _statusBarHeight = mediaQuery.padding.top;
+    _bottomBarHeight = _mediaQueryData.padding.bottom;
+  }
+
+  static MediaQueryData get mediaQueryData => _mediaQueryData;
+
+  ///设备的像素密度
+  static double get pixelRatio => _pixelRatio;
 
-  //当前设备宽度 px
-  static double screenWidth = window.physicalSize.width;
+  ///当前设备宽度 px
+  static double get screenWidth => _screenWidth * _pixelRatio;
 
-  //当前设备高度 px
-  static double screenHeight = window.physicalSize.height;
+  ///当前设备高度 px
+  static double get screenHeight => _screenHeight * _pixelRatio;
 
-  //状态栏高度 刘海屏会更高
-  static double statusBarHeight = window.padding.top;
+  ///状态栏高度 刘海屏会更高
+  static double get statusBarHeight => _statusBarHeight * _pixelRatio;
 
-  //底部安全区距离
-  static double bottomBarHeight = window.padding.bottom;
+  ///底部安全区距离
+  static double get bottomBarHeight => _bottomBarHeight * _pixelRatio;
 
-  //相对于设计稿放大的倍数
-  double get scaleWidth => screenWidth / instance.designWidth / pixelRatio;
+  ///相对于设计稿放大的倍数
+  get scaleWidth => _screenWidth / instance._designWidth;
 
-  double get scaleHeight => screenHeight / instance.designHeight / pixelRatio;
+  get scaleHeight => _screenHeight / instance._designHeight;
 
-  /**
-   * 根据设计稿的设备宽度适配
-   * 高度也根据这个来做适配可以保证不变形
-   */
+  ///根据设计稿的设备宽度适配
+  ///高度也根据这个来做适配可以保证不变形
   setWidth(int width) => width * scaleWidth;
 
-  /**
-   * 根据设计稿的设备高度适配
-   * 当发现设计稿中的一屏显示的与当前样式效果不符合时,
-   * 或者形状有差异时,高度适配建议使用此方法
-   * 高度适配主要针对想根据设计稿的一屏展示一样的效果
-   */
+  /// 根据设计稿的设备高度适配
+  /// 当发现设计稿中的一屏显示的与当前样式效果不符合时,
+  /// 或者形状有差异时,高度适配建议使用此方法
+  /// 高度适配主要针对想根据设计稿的一屏展示一样的效果
   setHeight(int height) => height * scaleHeight;
 }