diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 81fe072..1510a06 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -11,12 +11,7 @@
     <option name="TOOL_WINDOW_CONFIGURED_FILTER" value="No Filters" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="dfbbffde-77ed-47d0-864e-ae0c682898fc" name="Default Changelist" comment="">
-      <change afterPath="$PROJECT_DIR$/README.md" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/app/src/main/java/com/zhengsr/zupdate/MainActivity.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/com/zhengsr/zupdate/MainActivity.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/update-lib/src/main/java/com/zhengsr/zdwon_lib/ZDown.java" beforeDir="false" afterPath="$PROJECT_DIR$/update-lib/src/main/java/com/zhengsr/zdwon_lib/ZDown.java" afterDir="false" />
-    </list>
+    <list default="true" id="dfbbffde-77ed-47d0-864e-ae0c682898fc" name="Default Changelist" comment="" />
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -57,29 +52,28 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/update-lib/build.gradle">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="676">
+            <state relative-caret-position="814">
               <caret line="37" column="37" selection-start-line="37" selection-start-column="29" selection-end-line="37" selection-end-column="37" />
             </state>
           </provider>
         </entry>
       </file>
       <file pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/update-lib/src/main/java/com/zhengsr/zdwon_lib/entrance/imp/net/ZHttpServer.java">
+        <entry file="file://$PROJECT_DIR$/build.gradle">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="176">
-              <caret line="19" column="3" lean-forward="true" selection-start-line="19" selection-start-column="3" selection-end-line="20" />
+            <state relative-caret-position="220">
+              <caret line="10" column="8" lean-forward="true" selection-start-line="10" selection-start-column="8" selection-end-line="10" selection-end-column="8" />
             </state>
           </provider>
         </entry>
       </file>
       <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/app/src/main/res/layout/update_layout.xml">
+        <entry file="file://$PROJECT_DIR$/update-lib/src/main/java/com/zhengsr/zdwon_lib/entrance/imp/net/ZHttpServer.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="1364">
-              <caret line="62" column="39" selection-start-line="62" selection-start-column="39" selection-end-line="62" selection-end-column="39" />
+            <state relative-caret-position="726">
+              <caret line="44" lean-forward="true" selection-start-line="44" selection-end-line="44" />
             </state>
           </provider>
-          <provider editor-type-id="android-designer2" />
         </entry>
       </file>
       <file pinned="false" current-in-tab="false">
@@ -188,11 +182,21 @@
     <ConfirmationsSetting value="1" id="Add" />
   </component>
   <component name="ProjectView">
-    <navigator currentView="ProjectPane" proportions="" version="1">
+    <navigator proportions="" version="1">
       <foldersAlwaysOnTop value="true" />
     </navigator>
     <panes>
-      <pane id="AndroidView" />
+      <pane id="AndroidView">
+        <subPane>
+          <expand>
+            <path>
+              <item name="ZUpdate" type="1abcf292:AndroidViewProjectNode" />
+              <item name="Gradle Scripts" type="ae0cef3a:AndroidBuildScriptsGroupNode" />
+            </path>
+          </expand>
+          <select />
+        </subPane>
+      </pane>
       <pane id="Scope" />
       <pane id="ProjectPane">
         <subPane>
@@ -387,11 +391,19 @@
       <option name="project" value="LOCAL" />
       <updated>1585213535368</updated>
     </task>
-    <option name="localTasksCounter" value="2" />
+    <task id="LOCAL-00002" summary="&#10;添加说明文档">
+      <created>1585287805573</created>
+      <option name="number" value="00002" />
+      <option name="presentableId" value="LOCAL-00002" />
+      <option name="project" value="LOCAL" />
+      <updated>1585287805573</updated>
+    </task>
+    <option name="localTasksCounter" value="3" />
     <servers />
   </component>
   <component name="ToolWindowManager">
     <frame x="-8" y="-8" width="1936" height="1176" extended-state="6" />
+    <editor active="true" />
     <layout>
       <window_info id="Captures" order="0" side_tool="true" weight="0.25" />
       <window_info active="true" content_ui="combo" id="Project" order="1" visible="true" weight="0.18869936" />
@@ -423,7 +435,8 @@
   </component>
   <component name="VcsManagerConfiguration">
     <MESSAGE value="基本功能已完善&#10;&#10;1、编写升级界面&#10;2、完善下载断电续传功能，支持后台更新" />
-    <option name="LAST_COMMIT_MESSAGE" value="基本功能已完善&#10;&#10;1、编写升级界面&#10;2、完善下载断电续传功能，支持后台更新" />
+    <MESSAGE value="&#10;添加说明文档" />
+    <option name="LAST_COMMIT_MESSAGE" value="&#10;添加说明文档" />
   </component>
   <component name="editorHistoryManager">
     <entry file="file://$PROJECT_DIR$/update-lib/src/main/java/com/zhengsr/zdwon_lib/widget/InvisiabelFragment.java">
@@ -629,17 +642,24 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/update-lib/src/main/java/com/zhengsr/zdwon_lib/entrance/imp/net/ZHttpServer.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="726">
+          <caret line="44" lean-forward="true" selection-start-line="44" selection-end-line="44" />
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/update-lib/build.gradle">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="676">
+        <state relative-caret-position="814">
           <caret line="37" column="37" selection-start-line="37" selection-start-column="29" selection-end-line="37" selection-end-column="37" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/update-lib/src/main/java/com/zhengsr/zdwon_lib/entrance/imp/net/ZHttpServer.java">
+    <entry file="file://$PROJECT_DIR$/build.gradle">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="176">
-          <caret line="19" column="3" lean-forward="true" selection-start-line="19" selection-start-column="3" selection-end-line="20" />
+        <state relative-caret-position="220">
+          <caret line="10" column="8" lean-forward="true" selection-start-line="10" selection-start-column="8" selection-end-line="10" selection-end-column="8" />
         </state>
       </provider>
     </entry>
diff --git a/README.md b/README.md
index 8c81da6..680d70f 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,13 @@
 
 
 效果图
-![下载任务](https://github.com/LillteZheng/AppUpdate/raw/master/gif/update.gif)
+<table  align="center">
+
+  <tr>
+    <td><a href="url"><img src="https://github.com/LillteZheng/AppUpdate/raw/master/gif/update.gif" align="left"height="789" width="479"></a></td>
+  </tr>
+
+</table>
 
 ## 配置
 ```
diff --git a/build.gradle b/build.gradle
index 48947c3..44fe0ec 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,6 +8,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.5.1'
+        classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
         
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/update-lib/build.gradle b/update-lib/build.gradle
index b30f481..8be87c0 100644
--- a/update-lib/build.gradle
+++ b/update-lib/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.library'
-
+apply plugin: 'com.github.dcendents.android-maven'
+group='com.github.LillteZheng'
 android {
     compileSdkVersion 28
     buildToolsVersion "29.0.2"