更新默认进度1

@@ -22,7 +22,7 @@ import 'package:permission_handler/permission_handler.dart';
 import 'package:provider/provider.dart';
 
 class UpdateModel {
-  int _progress; //下载进度
+  int _progress = 1; //下载进度
   Function _setState;
   //检查更新
   checkUpdate(BuildContext context, {showToast = true}) async {

@@ -49,7 +49,7 @@ packages:
       name: args
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.1"
+    version: "1.6.0"
   async:
     dependency: transitive
     description:
@@ -168,7 +168,7 @@ packages:
       name: cli_util
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.3.0"
+    version: "0.3.3"
   clock:
     dependency: transitive
     description:
@@ -554,7 +554,7 @@ packages:
       name: logging
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.1"
+    version: "0.11.4"
   lpinyin:
     dependency: "direct main"
     description:
@@ -582,7 +582,7 @@ packages:
       name: mime
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.0"
+    version: "0.9.7"
   nested:
     dependency: transitive
     description:
@@ -757,7 +757,7 @@ packages:
       name: pub_semver
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.0.0"
+    version: "1.4.4"
   pubspec_parse:
     dependency: transitive
     description:
@@ -937,7 +937,7 @@ packages:
       name: stream_transform
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.0.0"
+    version: "0.0.20"
   string_scanner:
     dependency: transitive
     description:
@@ -1093,7 +1093,7 @@ packages:
       name: watcher
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.0"
+    version: "0.9.7+15"
   web_socket_channel:
     dependency: "direct main"
     description:
@@ -1128,7 +1128,7 @@ packages:
       name: yaml
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.1.0"
+    version: "2.2.1"
 sdks:
   dart: ">=2.12.0 <3.0.0"
   flutter: ">=2.0.0"