diff --git a/app/build.gradle b/app/build.gradle
index 9a65b8ee7878b013b0c1441c9104230ff2c3e126..84e5860d8baa7464d25cda30f2cbfa3a09fa800b 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,21 +1,30 @@
 apply plugin: 'com.android.application'
-
 apply plugin: 'kotlin-android'
-
 apply plugin: 'kotlin-android-extensions'
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 27
     defaultConfig {
-        applicationId "com.duolebo.dlbbot"
+        applicationId "com.duolebo.bylrobot"
         minSdkVersion 15
         targetSdkVersion 22
         versionCode 1
         versionName "1.0"
     }
+
+    signingConfigs {
+        release {
+            storeFile file('../duolebo')
+            keyAlias 'duolebo'
+            storePassword '1qaz2wsx#'
+            keyPassword '1qaz2wsx#'
+        }
+    }
+
     buildTypes {
         release {
             minifyEnabled false
+            signingConfig signingConfigs.release
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
@@ -23,7 +32,9 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.0.0-alpha1'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.2'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation 'org.nanohttpd:nanohttpd:2.2.0'
+    implementation 'com.yanzhenjie:andserver:1.1.4'
+    implementation(name: 'vpnadaptercore-release', ext: 'aar')
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index dae794b91be943cd1aee9686fda8ffca9abdbecc..6cce2a5c4cb0d5cf6f605b8f191fd921efeeeb6c 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -5,6 +5,10 @@
 
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
 
     <application
         android:allowBackup="true"
@@ -14,14 +18,17 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
         tools:ignore="GoogleAppIndexingWarning">
-        <activity android:name="com.duolebo.blyrobot.MainActivity">
+        <activity android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity android:name=".activity.PackageListActivity" />
 
-        <service android:name="com.duolebo.blyrobot.service.BylRobotService"/>
+        <service android:name=".service.BylRobotService" />
+        <service android:name=".service.BylWebService" />
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 4fc244418b5fe524789352d1b1b52d1b22045f3a..1b20f116b94a20a33918c93755dfeb8f5f1c55cf 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,18 +1,24 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
+<RelativeLayout xmlns:tools="http://schemas.android.com/tools"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    tools:context=".MainActivity"
     android:layout_height="match_parent"
-    tools:context=".MainActivity">
+    android:layout_width="match_parent">
 
-    <TextView
+    <Button
+        android:id="@+id/selectBtn"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        android:text="选择App抓包"
+        android:layout_centerInParent="true"/>
 
-</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
+    <Button
+        android:id="@+id/captureButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="10dp"
+        android:layout_centerHorizontal="true"
+        android:layout_below="@+id/selectBtn"
+        android:text="开始抓包"/>
+
+</RelativeLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_package_list.xml b/app/src/main/res/layout/activity_package_list.xml
new file mode 100644
index 0000000000000000000000000000000000000000..05aafd91e21dc7eec85b06795057e34911e23f06
--- /dev/null
+++ b/app/src/main/res/layout/activity_package_list.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <GridView
+        android:id="@+id/package_list"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:numColumns="3"/>
+
+    <ProgressBar
+        android:id="@+id/pg"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerInParent="true" />
+</RelativeLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/item_select_package.xml b/app/src/main/res/layout/item_select_package.xml
new file mode 100644
index 0000000000000000000000000000000000000000..a78cd505ca0e3c70e794df436b8bb836be0cf3c3
--- /dev/null
+++ b/app/src/main/res/layout/item_select_package.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <RelativeLayout
+        android:layout_width="match_parent"
+        android:layout_height="60dp">
+
+        <ImageView
+            android:id="@+id/select_icon"
+            android:layout_width="30dp"
+            android:layout_height="30dp"
+            android:layout_centerVertical="true"
+            android:layout_marginLeft="10dp"
+
+            tools:src="@drawable/sym_def_app_icon" />
+
+        <TextView
+            android:id="@+id/app_name"
+            android:layout_width="match_parent"
+            android:layout_height="60dp"
+            android:layout_centerVertical="true"
+            android:layout_margin="45dp"
+            android:layout_marginLeft="45dp"
+            android:gravity="center"
+            android:textSize="18sp"
+            tools:text="qq" />
+    </RelativeLayout>
+
+</RelativeLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 40f62724509e51df100346cbe513d90fda8a29c4..0e0588e817f7b19ccd46b1c2e8b28246720a0926 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,3 @@
 <resources>
-    <string name="app_name">DlbBot</string>
+    <string name="app_name">DLB辅助分析</string>
 </resources>