diff --git a/DevhubEntry/.gitignore b/DevhubEntry/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..aa724b77071afcbd9bb398053e05adaf7ac9405a
--- /dev/null
+++ b/DevhubEntry/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/DevhubEntry/app/.gitignore b/DevhubEntry/app/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42afabfd2abebf31384ca7797186a27a4b7dbee8
--- /dev/null
+++ b/DevhubEntry/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/DevhubEntry/app/build.gradle b/DevhubEntry/app/build.gradle
new file mode 100644
index 0000000000000000000000000000000000000000..fe9c2d57c3346dba981f818c0e51a5017d902ef9
--- /dev/null
+++ b/DevhubEntry/app/build.gradle
@@ -0,0 +1,38 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.devhubentry"
+        minSdkVersion 25
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'com.google.android.material:material:1.1.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+}
\ No newline at end of file
diff --git a/DevhubEntry/app/proguard-rules.pro b/DevhubEntry/app/proguard-rules.pro
new file mode 100644
index 0000000000000000000000000000000000000000..481bb434814107eb79d7a30b676d344b0df2f8ce
--- /dev/null
+++ b/DevhubEntry/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/DevhubEntry/app/src/androidTest/java/com/example/devhubentry/ExampleInstrumentedTest.java b/DevhubEntry/app/src/androidTest/java/com/example/devhubentry/ExampleInstrumentedTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..e287b47332e1c5b62c93ad0f545fef033f080b0c
--- /dev/null
+++ b/DevhubEntry/app/src/androidTest/java/com/example/devhubentry/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.devhubentry;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.devhubentry", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/DevhubEntry/app/src/main/AndroidManifest.xml b/DevhubEntry/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000000000000000000000000000000000000..9050093d947ad9f20c18e6ab927d7ca4095ae8df
--- /dev/null
+++ b/DevhubEntry/app/src/main/AndroidManifest.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.devhubentry">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.DevhubEntry" >
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>
\ No newline at end of file
diff --git a/DevhubEntry/app/src/main/java/com/example/devhubentry/MainActivity.java b/DevhubEntry/app/src/main/java/com/example/devhubentry/MainActivity.java
new file mode 100644
index 0000000000000000000000000000000000000000..f1b043b9e6cf294c3fa3e72f94a17f3c1a2c38c4
--- /dev/null
+++ b/DevhubEntry/app/src/main/java/com/example/devhubentry/MainActivity.java
@@ -0,0 +1,33 @@
+package com.example.devhubentry;
+
+import android.app.Activity;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.widget.EditText;
+
+
+public class MainActivity extends Activity {
+    EditText userName;
+    EditText passwdInput;
+    Drawable userIcon;
+    Drawable lockIcon;
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        userName=findViewById(R.id.userInput);
+        passwdInput=findViewById(R.id.passwdInput);
+        userIcon=userName.getCompoundDrawables()[0];
+        if(userIcon!=null){
+            userIcon.setBounds(20,0,75,60);
+            userName.setCompoundDrawables(userIcon,
+                    userName.getCompoundDrawables()[1],userName.getCompoundDrawables()[2],userName.getCompoundDrawables()[3]);
+        }
+        lockIcon=passwdInput.getCompoundDrawables()[0];
+        if(lockIcon!=null){
+            lockIcon.setBounds(20,0,75,60);
+            passwdInput.setCompoundDrawables(lockIcon,
+                    passwdInput.getCompoundDrawables()[1],passwdInput.getCompoundDrawables()[2],passwdInput.getCompoundDrawables()[3]);
+        }
+    }
+}
diff --git a/DevhubEntry/app/src/main/res/drawable-hdpi/bg.png b/DevhubEntry/app/src/main/res/drawable-hdpi/bg.png
new file mode 100644
index 0000000000000000000000000000000000000000..5a11f5d606d6fd065433c4fdd7daf26333b63e6e
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-hdpi/bg.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-hdpi/img.png b/DevhubEntry/app/src/main/res/drawable-hdpi/img.png
new file mode 100644
index 0000000000000000000000000000000000000000..dc4c81e120e2a92a2f6484b72157a7e206c6debe
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-hdpi/img.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-hdpi/lock_icon.png b/DevhubEntry/app/src/main/res/drawable-hdpi/lock_icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..ce9a3122da4a2193b9e8d9bcdcd0229f3ea1e68a
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-hdpi/lock_icon.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-hdpi/user_icno.png b/DevhubEntry/app/src/main/res/drawable-hdpi/user_icno.png
new file mode 100644
index 0000000000000000000000000000000000000000..def107a5107d486cd68b9cfd3f40499181dcb14c
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-hdpi/user_icno.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-ldpi/bg.png b/DevhubEntry/app/src/main/res/drawable-ldpi/bg.png
new file mode 100644
index 0000000000000000000000000000000000000000..312ef9fa1c373ad4c92ca2648f78bbb161e443da
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-ldpi/bg.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-ldpi/img.png b/DevhubEntry/app/src/main/res/drawable-ldpi/img.png
new file mode 100644
index 0000000000000000000000000000000000000000..2d78d83681b91e195e63e7edfe811a4318bbcdcf
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-ldpi/img.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-ldpi/lock_icon.png b/DevhubEntry/app/src/main/res/drawable-ldpi/lock_icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..df5e72cfd3f20ad154f277a8d9a6e70286434cd1
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-ldpi/lock_icon.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-ldpi/user_icno.png b/DevhubEntry/app/src/main/res/drawable-ldpi/user_icno.png
new file mode 100644
index 0000000000000000000000000000000000000000..1f49fe5e9c43190f284dc56da803246865311d5d
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-ldpi/user_icno.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-mdpi/bg.png b/DevhubEntry/app/src/main/res/drawable-mdpi/bg.png
new file mode 100644
index 0000000000000000000000000000000000000000..3d6047cd959f0a8b0db94f823a933e4a6b67d372
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-mdpi/bg.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-mdpi/img.png b/DevhubEntry/app/src/main/res/drawable-mdpi/img.png
new file mode 100644
index 0000000000000000000000000000000000000000..62856e5b5e94e113499681b64e4e705fdee80e77
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-mdpi/img.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-mdpi/lock_icon.png b/DevhubEntry/app/src/main/res/drawable-mdpi/lock_icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..eb5634611636fa90fd865aee08013eda87ef5b5c
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-mdpi/lock_icon.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-mdpi/user_icno.png b/DevhubEntry/app/src/main/res/drawable-mdpi/user_icno.png
new file mode 100644
index 0000000000000000000000000000000000000000..c32cb2a5b72a149abf1c79d610734289ccbe4d2b
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-mdpi/user_icno.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/DevhubEntry/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 0000000000000000000000000000000000000000..2b068d11462a4b96669193de13a711a3a36220a0
--- /dev/null
+++ b/DevhubEntry/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/DevhubEntry/app/src/main/res/drawable-xhdpi/bg.png b/DevhubEntry/app/src/main/res/drawable-xhdpi/bg.png
new file mode 100644
index 0000000000000000000000000000000000000000..5e049fb08c6a7d46ff0919d1560dbb5f5fca3adb
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-xhdpi/bg.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-xhdpi/img.png b/DevhubEntry/app/src/main/res/drawable-xhdpi/img.png
new file mode 100644
index 0000000000000000000000000000000000000000..91dc07f58828c52202ca7481374ef9c1102ccee3
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-xhdpi/img.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-xhdpi/lock_icon.png b/DevhubEntry/app/src/main/res/drawable-xhdpi/lock_icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..58f313b21887b57574aaa030e6fc482fbde1dd10
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-xhdpi/lock_icon.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-xhdpi/user_icno.png b/DevhubEntry/app/src/main/res/drawable-xhdpi/user_icno.png
new file mode 100644
index 0000000000000000000000000000000000000000..d6ed062dad959dff01b312ebfdf58c08b7930577
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-xhdpi/user_icno.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-xxhdpi/bg.png b/DevhubEntry/app/src/main/res/drawable-xxhdpi/bg.png
new file mode 100644
index 0000000000000000000000000000000000000000..4a9eb6590e1b87ae6f722c23c6ebe0e63119ebe4
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-xxhdpi/bg.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-xxhdpi/img.png b/DevhubEntry/app/src/main/res/drawable-xxhdpi/img.png
new file mode 100644
index 0000000000000000000000000000000000000000..e63a1a1e61eb77b463d068d1b8546782e2083edd
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-xxhdpi/img.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-xxhdpi/lock_icon.png b/DevhubEntry/app/src/main/res/drawable-xxhdpi/lock_icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..20af5a09c1c365f6bd30e2d96bbf645f9f79184a
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-xxhdpi/lock_icon.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-xxhdpi/user_icno.png b/DevhubEntry/app/src/main/res/drawable-xxhdpi/user_icno.png
new file mode 100644
index 0000000000000000000000000000000000000000..3bc9af9ad579c880b734f3923cfe600aacdaddf6
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-xxhdpi/user_icno.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-xxxhdpi/bg.png b/DevhubEntry/app/src/main/res/drawable-xxxhdpi/bg.png
new file mode 100644
index 0000000000000000000000000000000000000000..f08196688b19c49a4e32f7fe5afe07612cefd657
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-xxxhdpi/bg.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-xxxhdpi/img.png b/DevhubEntry/app/src/main/res/drawable-xxxhdpi/img.png
new file mode 100644
index 0000000000000000000000000000000000000000..19f219102e5fd78db42a684648420d0b5cd98ea4
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-xxxhdpi/img.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-xxxhdpi/lock_icon.png b/DevhubEntry/app/src/main/res/drawable-xxxhdpi/lock_icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..7e5aa283952f34446f7b4bf2efadb3ec445677b8
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-xxxhdpi/lock_icon.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable-xxxhdpi/user_icno.png b/DevhubEntry/app/src/main/res/drawable-xxxhdpi/user_icno.png
new file mode 100644
index 0000000000000000000000000000000000000000..a92cfc65ceed04ffa33d8b115f7ac717eeeb5b95
Binary files /dev/null and b/DevhubEntry/app/src/main/res/drawable-xxxhdpi/user_icno.png differ
diff --git a/DevhubEntry/app/src/main/res/drawable/edit_rect.xml b/DevhubEntry/app/src/main/res/drawable/edit_rect.xml
new file mode 100644
index 0000000000000000000000000000000000000000..aa78e73e2b1af59ee81a6ba395baab5f0f817986
--- /dev/null
+++ b/DevhubEntry/app/src/main/res/drawable/edit_rect.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list
+    xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape
+            xmlns:android="http://schemas.android.com/apk/res/android"
+            android:shape="rectangle">
+            <solid
+                android:color="#FFFFFF"/>
+            <corners
+                android:radius="15dp"/>
+            <stroke
+                android:width="5px"
+                android:color="#7777F3"/>
+        </shape>
+    </item>
+</layer-list>
\ No newline at end of file
diff --git a/DevhubEntry/app/src/main/res/drawable/ic_launcher_background.xml b/DevhubEntry/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000000000000000000000000000000000000..07d5da9cbf141911847041df5d7b87f0dd5ef9d4
--- /dev/null
+++ b/DevhubEntry/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/DevhubEntry/app/src/main/res/layout/activity_main.xml b/DevhubEntry/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000000000000000000000000000000000000..7a352cc5880f2fbe03f601239d65174cfd01c44c
--- /dev/null
+++ b/DevhubEntry/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,107 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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"
+    android:layout_height="match_parent"
+    android:layout_gravity="center_vertical"
+    android:background="@drawable/bg"
+    android:orientation="vertical">
+
+    <androidx.cardview.widget.CardView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginLeft="25dp"
+        android:layout_marginTop="100dp"
+        android:layout_marginRight="25dp"
+        android:layout_marginBottom="100dp"
+        app:cardCornerRadius="20dp">
+
+        <RelativeLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="vertical">
+
+            <ImageView
+                android:id="@+id/imgV"
+                android:layout_width="match_parent"
+                android:layout_height="200dp"
+                android:src="@drawable/img" />
+
+            <EditText
+
+                android:id="@+id/userInput"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_below="@id/imgV"
+                android:layout_marginHorizontal="20dp"
+                android:layout_marginVertical="10dp"
+                android:drawableLeft="@drawable/user_icno"
+                android:drawablePadding="8dp"
+                android:background="@drawable/edit_rect"
+                android:hint="@string/login_userName"
+                android:singleLine="true"
+                android:textColorHint="#7777F3"
+                android:textSize="20sp" />
+
+            <EditText
+                android:id="@+id/passwdInput"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_below="@id/userInput"
+                android:layout_marginHorizontal="20dp"
+                android:layout_marginVertical="10dp"
+                android:drawableLeft="@drawable/lock_icon"
+                android:drawablePadding="8dp"
+                android:background="@drawable/edit_rect"
+                android:hint="@string/login_input_password"
+                android:inputType="textPassword"
+                android:textColorHint="#7777F3"
+                android:textSize="20sp" />
+
+            <CheckBox
+                android:id="@+id/isRemember"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_below="@id/passwdInput"
+                android:buttonTint="#7777F3"
+                android:text="@string/login_remember"
+                android:textColor="#7777F3"
+                android:textSize="17sp"
+                style="@style/Widget.AppCompat.CompoundButton.RadioButton"/>
+
+            <Button
+                android:id="@+id/buttonLogin"
+                android:layout_width="120dp"
+                android:layout_height="wrap_content"
+                android:layout_below="@id/isRemember"
+                android:layout_centerHorizontal="true"
+                android:layout_marginTop="15dp"
+                android:text="@string/login"
+                android:textColor="#FFFFFF"
+                android:background="#00E088"
+                android:textSize="25sp" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center"
+                android:layout_marginTop="10dp"
+                android:layout_below="@id/buttonLogin"
+                android:orientation="horizontal">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/sign_up"
+                    android:textSize="18sp"/>
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/forgetPSD"
+                    android:layout_marginLeft="15dp"
+                    android:textSize="18sp"/>
+            </LinearLayout>
+        </RelativeLayout>
+    </androidx.cardview.widget.CardView>
+</LinearLayout>
\ No newline at end of file
diff --git a/DevhubEntry/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/DevhubEntry/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 0000000000000000000000000000000000000000..eca70cfe52eac1ba66ba280a68ca7be8fcf88a16
--- /dev/null
+++ b/DevhubEntry/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/DevhubEntry/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/DevhubEntry/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 0000000000000000000000000000000000000000..eca70cfe52eac1ba66ba280a68ca7be8fcf88a16
--- /dev/null
+++ b/DevhubEntry/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/DevhubEntry/app/src/main/res/mipmap-hdpi/ic_launcher.png b/DevhubEntry/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000000000000000000000000000000000000..a571e60098c92c2baca8a5df62f2929cbff01b52
Binary files /dev/null and b/DevhubEntry/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/DevhubEntry/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/DevhubEntry/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 0000000000000000000000000000000000000000..61da551c5594a1f9d26193983d2cd69189014603
Binary files /dev/null and b/DevhubEntry/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/DevhubEntry/app/src/main/res/mipmap-mdpi/ic_launcher.png b/DevhubEntry/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000000000000000000000000000000000000..c41dd28531901b2c23927768c84bb6765ebcc1db
Binary files /dev/null and b/DevhubEntry/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/DevhubEntry/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/DevhubEntry/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 0000000000000000000000000000000000000000..db5080a752731b34d38d7c634732b2cd999125d0
Binary files /dev/null and b/DevhubEntry/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/DevhubEntry/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/DevhubEntry/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000000000000000000000000000000000000..6dba46dab19242bf475ddf2e0a10042de6a0be16
Binary files /dev/null and b/DevhubEntry/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/DevhubEntry/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/DevhubEntry/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 0000000000000000000000000000000000000000..da31a871c8dc461a1ea114510bfac640307b0a90
Binary files /dev/null and b/DevhubEntry/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/DevhubEntry/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/DevhubEntry/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000000000000000000000000000000000000..15ac681720f3df43c647bf0c081f0314ee34eae1
Binary files /dev/null and b/DevhubEntry/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/DevhubEntry/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/DevhubEntry/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000000000000000000000000000000000000..b216f2d313cc673d8b8c4da591c174ebed52795c
Binary files /dev/null and b/DevhubEntry/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/DevhubEntry/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/DevhubEntry/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000000000000000000000000000000000000..f25a419744727fb48b4b4137b6c6a3a8f2620d51
Binary files /dev/null and b/DevhubEntry/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/DevhubEntry/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/DevhubEntry/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000000000000000000000000000000000000..e96783ccce844001359f968f5cd9d85b341bd3fb
Binary files /dev/null and b/DevhubEntry/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/DevhubEntry/app/src/main/res/values-night/themes.xml b/DevhubEntry/app/src/main/res/values-night/themes.xml
new file mode 100644
index 0000000000000000000000000000000000000000..97a509390f51f44044f8561bcfaf4d9b9dd6d1f0
--- /dev/null
+++ b/DevhubEntry/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.DevhubEntry" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/DevhubEntry/app/src/main/res/values/colors.xml b/DevhubEntry/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000000000000000000000000000000000000..f8c6127d327620c93d2b2d00342a68e97b98a48d
--- /dev/null
+++ b/DevhubEntry/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/DevhubEntry/app/src/main/res/values/strings.xml b/DevhubEntry/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000000000000000000000000000000000000..e81d210766889bddcc22314fbf7812468700664f
--- /dev/null
+++ b/DevhubEntry/app/src/main/res/values/strings.xml
@@ -0,0 +1,9 @@
+<resources>
+    <string name="app_name">DevhubEntry</string>
+    <string name="login_userName">请输入用户名/邮箱</string>
+    <string name="login_input_password">请输入密码</string>
+    <string name="login_remember">记住我</string>
+    <string name="login">登录</string>
+    <string name="sign_up">注册账号</string>
+    <string name="forgetPSD">忘记密码</string>
+</resources>
\ No newline at end of file
diff --git a/DevhubEntry/app/src/main/res/values/themes.xml b/DevhubEntry/app/src/main/res/values/themes.xml
new file mode 100644
index 0000000000000000000000000000000000000000..693dae7dd4e3a1721fba8bdcfd4c9704b4963f37
--- /dev/null
+++ b/DevhubEntry/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.DevhubEntry" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/DevhubEntry/app/src/test/java/com/example/devhubentry/ExampleUnitTest.java b/DevhubEntry/app/src/test/java/com/example/devhubentry/ExampleUnitTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..0313a999f2bffe20d4c884fd58bd74f5c3210e0e
--- /dev/null
+++ b/DevhubEntry/app/src/test/java/com/example/devhubentry/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.devhubentry;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/DevhubEntry/build.gradle b/DevhubEntry/build.gradle
new file mode 100644
index 0000000000000000000000000000000000000000..dfbc7c14144f78c77042100b30a5b8695b4c8ea4
--- /dev/null
+++ b/DevhubEntry/build.gradle
@@ -0,0 +1,24 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        jcenter()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.1.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/DevhubEntry/gradle.properties b/DevhubEntry/gradle.properties
new file mode 100644
index 0000000000000000000000000000000000000000..52f5917cb0d0c47fd00ba8ee85c14eb27e1c41cc
--- /dev/null
+++ b/DevhubEntry/gradle.properties
@@ -0,0 +1,19 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Automatically convert third-party libraries to use AndroidX
+android.enableJetifier=true
\ No newline at end of file
diff --git a/DevhubEntry/gradle/wrapper/gradle-wrapper.jar b/DevhubEntry/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000000000000000000000000000000000000..f6b961fd5a86aa5fbfe90f707c3138408be7c718
Binary files /dev/null and b/DevhubEntry/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/DevhubEntry/gradle/wrapper/gradle-wrapper.properties b/DevhubEntry/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000000000000000000000000000000000000..29c007e0becd048f9ca50fce31124730fbd6bcab
--- /dev/null
+++ b/DevhubEntry/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Sat Oct 23 21:12:49 CST 2021
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
diff --git a/DevhubEntry/gradlew b/DevhubEntry/gradlew
new file mode 100644
index 0000000000000000000000000000000000000000..cccdd3d517fc5249beaefa600691cf150f2fa3e6
--- /dev/null
+++ b/DevhubEntry/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/DevhubEntry/gradlew.bat b/DevhubEntry/gradlew.bat
new file mode 100644
index 0000000000000000000000000000000000000000..f9553162f122c71b34635112e717c3e733b5b212
--- /dev/null
+++ b/DevhubEntry/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/DevhubEntry/settings.gradle b/DevhubEntry/settings.gradle
new file mode 100644
index 0000000000000000000000000000000000000000..3f4f33a12ef8078342b66895a0b99c3a5fa77a5a
--- /dev/null
+++ b/DevhubEntry/settings.gradle
@@ -0,0 +1,2 @@
+include ':app'
+rootProject.name = "DevhubEntry"
\ No newline at end of file
diff --git a/git.txt b/git.txt
new file mode 100644
index 0000000000000000000000000000000000000000..30e1301820369bb71f618155359e336a9cf6f6b3
--- /dev/null
+++ b/git.txt
@@ -0,0 +1,12 @@
+1. git clone https://gitee.com/npu-devhub/app-practice1.git
+拷贝一个git仓库到本地
+2. cd app-practice1
+change directory,变更当前目录
+3. git checkout -b practice1/sunwukong-2018303999
+创建并切换分支
+4. git add .  
+将文件添加到暂存区
+5. git commit -m 'practice1: sunwukong-2018303999'
+将暂存区内容添加到本地仓库
+6. git push origin practice1/sunwukong-20183031999
+将本地的分支版本上传并与远程分支合并
\ No newline at end of file