diff --git a/Homework1_Login/.gitignore b/Homework1_Login/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..aa724b77071afcbd9bb398053e05adaf7ac9405a
--- /dev/null
+++ b/Homework1_Login/.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/Homework1_Login/.idea/.gitignore b/Homework1_Login/.idea/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..26d33521af10bcc7fd8cea344038eaaeb78d0ef5
--- /dev/null
+++ b/Homework1_Login/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/Homework1_Login/.idea/compiler.xml b/Homework1_Login/.idea/compiler.xml
new file mode 100644
index 0000000000000000000000000000000000000000..61a9130cd9669c3843e6445dfe1fee2d493869bc
--- /dev/null
+++ b/Homework1_Login/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="1.8" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/Homework1_Login/.idea/gradle.xml b/Homework1_Login/.idea/gradle.xml
new file mode 100644
index 0000000000000000000000000000000000000000..e9969a1c287d5e9aa14e37d39e99dc13b313c247
--- /dev/null
+++ b/Homework1_Login/.idea/gradle.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="GRADLE" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="11" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/Homework1_Login/.idea/misc.xml b/Homework1_Login/.idea/misc.xml
new file mode 100644
index 0000000000000000000000000000000000000000..33df6775bf5f4497f5221ccb8d8b9c69f241438b
--- /dev/null
+++ b/Homework1_Login/.idea/misc.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DesignSurface">
+    <option name="filePathToZoomLevelMap">
+      <map>
+        <entry key="..\:/Android/Homework1_Login/app/src/main/res/drawable/ic_launcher_background.xml" value="0.26979166666666665" />
+        <entry key="..\:/Android/Homework1_Login/app/src/main/res/drawable/in_bg.xml" value="0.26979166666666665" />
+        <entry key="..\:/Android/Homework1_Login/app/src/main/res/drawable/login_button_bg.xml" value="0.26979166666666665" />
+        <entry key="..\:/Android/Homework1_Login/app/src/main/res/drawable/text_bg.xml" value="0.26979166666666665" />
+        <entry key="..\:/Android/Homework1_Login/app/src/main/res/layout/activity_main.xml" value="0.4" />
+      </map>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/Homework1_Login/app/.gitignore b/Homework1_Login/app/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42afabfd2abebf31384ca7797186a27a4b7dbee8
--- /dev/null
+++ b/Homework1_Login/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/Homework1_Login/app/build.gradle b/Homework1_Login/app/build.gradle
new file mode 100644
index 0000000000000000000000000000000000000000..b3931cd648017599be96934883925686a398e135
--- /dev/null
+++ b/Homework1_Login/app/build.gradle
@@ -0,0 +1,43 @@
+plugins {
+    id 'com.android.application'
+    id 'kotlin-android'
+}
+
+android {
+    compileSdk 30
+
+    defaultConfig {
+        applicationId "com.example.homework1_login"
+        minSdk 21
+        targetSdk 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
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.core:core-ktx:1.3.2'
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'com.google.android.material:material:1.3.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+}
\ No newline at end of file
diff --git a/Homework1_Login/app/proguard-rules.pro b/Homework1_Login/app/proguard-rules.pro
new file mode 100644
index 0000000000000000000000000000000000000000..481bb434814107eb79d7a30b676d344b0df2f8ce
--- /dev/null
+++ b/Homework1_Login/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/Homework1_Login/app/release/app-release.apk b/Homework1_Login/app/release/app-release.apk
new file mode 100644
index 0000000000000000000000000000000000000000..f7c151d86f2b600d1e3bac99b944aa0f57b0a778
Binary files /dev/null and b/Homework1_Login/app/release/app-release.apk differ
diff --git a/Homework1_Login/app/release/output-metadata.json b/Homework1_Login/app/release/output-metadata.json
new file mode 100644
index 0000000000000000000000000000000000000000..7dfa9583af151ee419c9851b7f26133b1e912698
--- /dev/null
+++ b/Homework1_Login/app/release/output-metadata.json
@@ -0,0 +1,20 @@
+{
+  "version": 3,
+  "artifactType": {
+    "type": "APK",
+    "kind": "Directory"
+  },
+  "applicationId": "com.example.homework1_login",
+  "variantName": "release",
+  "elements": [
+    {
+      "type": "SINGLE",
+      "filters": [],
+      "attributes": [],
+      "versionCode": 1,
+      "versionName": "1.0",
+      "outputFile": "app-release.apk"
+    }
+  ],
+  "elementType": "File"
+}
\ No newline at end of file
diff --git a/Homework1_Login/app/src/androidTest/java/com/example/homework1_login/ExampleInstrumentedTest.kt b/Homework1_Login/app/src/androidTest/java/com/example/homework1_login/ExampleInstrumentedTest.kt
new file mode 100644
index 0000000000000000000000000000000000000000..e7d3c98d4d5db612e6d3c1fe63cf2dc9dc196bfb
--- /dev/null
+++ b/Homework1_Login/app/src/androidTest/java/com/example/homework1_login/ExampleInstrumentedTest.kt
@@ -0,0 +1,24 @@
+package com.example.homework1_login
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.example.homework1_login", appContext.packageName)
+    }
+}
\ No newline at end of file
diff --git a/Homework1_Login/app/src/main/AndroidManifest.xml b/Homework1_Login/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000000000000000000000000000000000000..ca70bfe351872cd2a8dffb0d0d6801e727156c32
--- /dev/null
+++ b/Homework1_Login/app/src/main/AndroidManifest.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.homework1_login" >
+
+    <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.Homework1_Login" >
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <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/Homework1_Login/app/src/main/java/com/example/homework1_login/MainActivity.kt b/Homework1_Login/app/src/main/java/com/example/homework1_login/MainActivity.kt
new file mode 100644
index 0000000000000000000000000000000000000000..59ba8b724caf90c9bdf7a4b9db9b4d31bd0b68b5
--- /dev/null
+++ b/Homework1_Login/app/src/main/java/com/example/homework1_login/MainActivity.kt
@@ -0,0 +1,13 @@
+package com.example.homework1_login
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.view.Window
+
+class MainActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        supportActionBar?.hide()
+        setContentView(R.layout.activity_main)
+    }
+}
\ No newline at end of file
diff --git a/Homework1_Login/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/Homework1_Login/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 0000000000000000000000000000000000000000..2b068d11462a4b96669193de13a711a3a36220a0
--- /dev/null
+++ b/Homework1_Login/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/Homework1_Login/app/src/main/res/drawable/bg.png b/Homework1_Login/app/src/main/res/drawable/bg.png
new file mode 100644
index 0000000000000000000000000000000000000000..312ef9fa1c373ad4c92ca2648f78bbb161e443da
Binary files /dev/null and b/Homework1_Login/app/src/main/res/drawable/bg.png differ
diff --git a/Homework1_Login/app/src/main/res/drawable/ic_launcher_background.xml b/Homework1_Login/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000000000000000000000000000000000000..07d5da9cbf141911847041df5d7b87f0dd5ef9d4
--- /dev/null
+++ b/Homework1_Login/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/Homework1_Login/app/src/main/res/drawable/img.png b/Homework1_Login/app/src/main/res/drawable/img.png
new file mode 100644
index 0000000000000000000000000000000000000000..2d78d83681b91e195e63e7edfe811a4318bbcdcf
Binary files /dev/null and b/Homework1_Login/app/src/main/res/drawable/img.png differ
diff --git a/Homework1_Login/app/src/main/res/drawable/in_bg.xml b/Homework1_Login/app/src/main/res/drawable/in_bg.xml
new file mode 100644
index 0000000000000000000000000000000000000000..d5fa32e16ea7bca03c5139c0032c68cac9368da0
--- /dev/null
+++ b/Homework1_Login/app/src/main/res/drawable/in_bg.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <corners android:radius="20dp"/>
+    <solid android:color="@color/white"/>
+</shape>
\ No newline at end of file
diff --git a/Homework1_Login/app/src/main/res/drawable/lock_icon.png b/Homework1_Login/app/src/main/res/drawable/lock_icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..df5e72cfd3f20ad154f277a8d9a6e70286434cd1
Binary files /dev/null and b/Homework1_Login/app/src/main/res/drawable/lock_icon.png differ
diff --git a/Homework1_Login/app/src/main/res/drawable/login_button_bg.xml b/Homework1_Login/app/src/main/res/drawable/login_button_bg.xml
new file mode 100644
index 0000000000000000000000000000000000000000..7e1f4bc5f7dd725f155a46be4e234ae2d19e0dca
--- /dev/null
+++ b/Homework1_Login/app/src/main/res/drawable/login_button_bg.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+<corners android:radius="50dp"/>
+    <solid android:color="#4EEE94"/>
+</shape>
\ No newline at end of file
diff --git a/Homework1_Login/app/src/main/res/drawable/text_bg.xml b/Homework1_Login/app/src/main/res/drawable/text_bg.xml
new file mode 100644
index 0000000000000000000000000000000000000000..7881ea7d53fecd81b2152def6a773eee46c2f4d1
--- /dev/null
+++ b/Homework1_Login/app/src/main/res/drawable/text_bg.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+<corners android:radius="50dp"/>
+    <stroke android:color="#9B30FF" android:width="1dp"/>
+
+</shape>
\ No newline at end of file
diff --git a/Homework1_Login/app/src/main/res/drawable/user_icno.png b/Homework1_Login/app/src/main/res/drawable/user_icno.png
new file mode 100644
index 0000000000000000000000000000000000000000..1f49fe5e9c43190f284dc56da803246865311d5d
Binary files /dev/null and b/Homework1_Login/app/src/main/res/drawable/user_icno.png differ
diff --git a/Homework1_Login/app/src/main/res/layout/activity_main.xml b/Homework1_Login/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000000000000000000000000000000000000..34d34567b9f0ac9733fce97ebb9a765e397c618e
--- /dev/null
+++ b/Homework1_Login/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,161 @@
+<?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"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity"
+    android:background="@drawable/bg">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:background="@drawable/in_bg"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintHeight_percent=".80"
+        app:layout_constraintWidth_percent=".90"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <ImageView
+            android:id="@+id/img"
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:src="@drawable/img"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHeight_percent=".4"
+            app:layout_constraintHorizontal_bias="0.0"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias=".05">
+        </ImageView>
+
+
+        <RelativeLayout
+            android:id="@+id/relativeLayout"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:background="@drawable/text_bg"
+            app:layout_constraintTop_toBottomOf="@id/img"
+            app:layout_constraintBottom_toTopOf="@+id/relativeLayout2"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintHorizontal_bias=".50"
+            app:layout_constraintVertical_bias=".40"
+            app:layout_constraintHeight_percent=".10"
+            app:layout_constraintWidth_percent=".80">
+
+            <ImageView
+                android:id="@+id/user_icno"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:layout_marginLeft="20dp"
+                android:src="@drawable/user_icno" />
+
+            <EditText
+                style="?android:attr/textViewStyle"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_marginLeft="60dp"
+                android:background="@null"
+                android:hint="请输入用户名/邮箱"
+                android:textColor="#9B30FF"
+                android:textColorHint="#9B30FF"
+                android:textSize="20dp" />
+        </RelativeLayout>
+
+        <RelativeLayout
+            android:id="@+id/relativeLayout2"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:background="@drawable/text_bg"
+            app:layout_constraintVertical_bias=".30"
+            app:layout_constraintBottom_toBottomOf="@id/checkBox"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHeight_percent=".10"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/relativeLayout"
+            app:layout_constraintWidth_percent=".80">
+
+            <ImageView
+                android:id="@+id/lock_icno"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:layout_marginLeft="20dp"
+                android:src="@drawable/lock_icon" />
+
+            <EditText
+                style="?android:attr/textViewStyle"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_marginLeft="60dp"
+                android:background="@null"
+                android:hint="请输入密码"
+                android:textColor="#9B30FF"
+                android:textColorHint="#9B30FF"
+                android:textSize="20dp" />
+        </RelativeLayout>
+
+        <CheckBox
+            android:id="@+id/checkBox"
+            style="@style/Widget.AppCompat.CompoundButton.RadioButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="记住我"
+            android:textColor="#9B30FF"
+            android:textSize="20dp"
+            android:buttonTint="#9B30FF"
+            app:layout_constraintVertical_bias=".50"
+            app:layout_constraintHorizontal_bias=".20"
+            app:layout_constraintBottom_toTopOf="@id/login_button"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/relativeLayout2"  />
+        <Button
+            android:id="@+id/login_button"
+            app:layout_constraintWidth_percent=".40"
+            android:text="登录"
+            android:layout_width="0dp"
+            android:textColor="@color/white"
+            android:textSize="30dp"
+            android:background="@drawable/login_button_bg"
+            android:layout_height="wrap_content"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias=".50"
+            app:layout_constraintVertical_bias=".80"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+        <TextView
+            android:id="@+id/text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="注册账号"
+            android:textColor="@color/black"
+            android:clickable="true"
+            app:layout_constraintLeft_toLeftOf="@id/login_button"
+            app:layout_constraintTop_toBottomOf="@id/login_button"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintRight_toLeftOf="@id/text2"
+            app:layout_constraintHorizontal_weight="1"
+            app:layout_constraintHorizontal_bias=".0"
+            app:layout_constraintVertical_bias=".50"/>
+        <TextView
+            android:id="@+id/text2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="忘记密码"
+            android:textColor="@color/black"
+            android:clickable="true"
+            app:layout_constraintLeft_toRightOf="@id/text"
+            app:layout_constraintTop_toBottomOf="@id/login_button"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintRight_toRightOf="@id/login_button"
+            app:layout_constraintHorizontal_weight="1"
+            app:layout_constraintVertical_bias=".50"/>
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/Homework1_Login/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/Homework1_Login/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 0000000000000000000000000000000000000000..eca70cfe52eac1ba66ba280a68ca7be8fcf88a16
--- /dev/null
+++ b/Homework1_Login/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/Homework1_Login/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/Homework1_Login/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 0000000000000000000000000000000000000000..eca70cfe52eac1ba66ba280a68ca7be8fcf88a16
--- /dev/null
+++ b/Homework1_Login/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/Homework1_Login/app/src/main/res/mipmap-hdpi/ic_launcher.webp b/Homework1_Login/app/src/main/res/mipmap-hdpi/ic_launcher.webp
new file mode 100644
index 0000000000000000000000000000000000000000..c209e78ecd372343283f4157dcfd918ec5165bb3
Binary files /dev/null and b/Homework1_Login/app/src/main/res/mipmap-hdpi/ic_launcher.webp differ
diff --git a/Homework1_Login/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp b/Homework1_Login/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
new file mode 100644
index 0000000000000000000000000000000000000000..b2dfe3d1ba5cf3ee31b3ecc1ced89044a1f3b7a9
Binary files /dev/null and b/Homework1_Login/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp differ
diff --git a/Homework1_Login/app/src/main/res/mipmap-mdpi/ic_launcher.webp b/Homework1_Login/app/src/main/res/mipmap-mdpi/ic_launcher.webp
new file mode 100644
index 0000000000000000000000000000000000000000..4f0f1d64e58ba64d180ce43ee13bf9a17835fbca
Binary files /dev/null and b/Homework1_Login/app/src/main/res/mipmap-mdpi/ic_launcher.webp differ
diff --git a/Homework1_Login/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp b/Homework1_Login/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
new file mode 100644
index 0000000000000000000000000000000000000000..62b611da081676d42f6c3f78a2c91e7bcedddedb
Binary files /dev/null and b/Homework1_Login/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp differ
diff --git a/Homework1_Login/app/src/main/res/mipmap-xhdpi/ic_launcher.webp b/Homework1_Login/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
new file mode 100644
index 0000000000000000000000000000000000000000..948a3070fe34c611c42c0d3ad3013a0dce358be0
Binary files /dev/null and b/Homework1_Login/app/src/main/res/mipmap-xhdpi/ic_launcher.webp differ
diff --git a/Homework1_Login/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp b/Homework1_Login/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
new file mode 100644
index 0000000000000000000000000000000000000000..1b9a6956b3acdc11f40ce2bb3f6efbd845cc243f
Binary files /dev/null and b/Homework1_Login/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp differ
diff --git a/Homework1_Login/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp b/Homework1_Login/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
new file mode 100644
index 0000000000000000000000000000000000000000..28d4b77f9f036a47549d47db79c16788749dca10
Binary files /dev/null and b/Homework1_Login/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp differ
diff --git a/Homework1_Login/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp b/Homework1_Login/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
new file mode 100644
index 0000000000000000000000000000000000000000..9287f5083623b375139afb391af71cc533a7dd37
Binary files /dev/null and b/Homework1_Login/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp differ
diff --git a/Homework1_Login/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp b/Homework1_Login/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
new file mode 100644
index 0000000000000000000000000000000000000000..aa7d6427e6fa1074b79ccd52ef67ac15c5637e85
Binary files /dev/null and b/Homework1_Login/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp differ
diff --git a/Homework1_Login/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp b/Homework1_Login/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
new file mode 100644
index 0000000000000000000000000000000000000000..9126ae37cbc3587421d6889eadd1d91fbf1994d4
Binary files /dev/null and b/Homework1_Login/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp differ
diff --git a/Homework1_Login/app/src/main/res/values-night/themes.xml b/Homework1_Login/app/src/main/res/values-night/themes.xml
new file mode 100644
index 0000000000000000000000000000000000000000..715934c458a4354e9fae7426efcf76b1619dd035
--- /dev/null
+++ b/Homework1_Login/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.Homework1_Login" 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/Homework1_Login/app/src/main/res/values/colors.xml b/Homework1_Login/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000000000000000000000000000000000000..f8c6127d327620c93d2b2d00342a68e97b98a48d
--- /dev/null
+++ b/Homework1_Login/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/Homework1_Login/app/src/main/res/values/strings.xml b/Homework1_Login/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000000000000000000000000000000000000..38b7c888da3b67fee8b5a21d0cf424a1da3feb37
--- /dev/null
+++ b/Homework1_Login/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">Homework1_Login</string>
+</resources>
\ No newline at end of file
diff --git a/Homework1_Login/app/src/main/res/values/themes.xml b/Homework1_Login/app/src/main/res/values/themes.xml
new file mode 100644
index 0000000000000000000000000000000000000000..3b1f96348618f5f6ff89fe2dfd1e3cce35ee647e
--- /dev/null
+++ b/Homework1_Login/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.Homework1_Login" parent="Theme.MaterialComponents.DayNight.DarkActionBar.Bridge">
+        <!-- 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/Homework1_Login/app/src/test/java/com/example/homework1_login/ExampleUnitTest.kt b/Homework1_Login/app/src/test/java/com/example/homework1_login/ExampleUnitTest.kt
new file mode 100644
index 0000000000000000000000000000000000000000..fb92d08701ba007b94d50ab8a79786c3eb943c88
--- /dev/null
+++ b/Homework1_Login/app/src/test/java/com/example/homework1_login/ExampleUnitTest.kt
@@ -0,0 +1,17 @@
+package com.example.homework1_login
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}
\ No newline at end of file
diff --git a/Homework1_Login/build.gradle b/Homework1_Login/build.gradle
new file mode 100644
index 0000000000000000000000000000000000000000..fee67c22d94c2d22c301f0aa09de16684bc56937
--- /dev/null
+++ b/Homework1_Login/build.gradle
@@ -0,0 +1,18 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:7.0.0"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.20"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/Homework1_Login/gradle.properties b/Homework1_Login/gradle.properties
new file mode 100644
index 0000000000000000000000000000000000000000..98bed167dc90ffee72b7affb37a659966b1bd114
--- /dev/null
+++ b/Homework1_Login/gradle.properties
@@ -0,0 +1,21 @@
+# 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
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
\ No newline at end of file
diff --git a/Homework1_Login/gradle/wrapper/gradle-wrapper.jar b/Homework1_Login/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000000000000000000000000000000000000..e708b1c023ec8b20f512888fe07c5bd3ff77bb8f
Binary files /dev/null and b/Homework1_Login/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/Homework1_Login/gradle/wrapper/gradle-wrapper.properties b/Homework1_Login/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000000000000000000000000000000000000..9278cc9fba5e11499e5930c6a73b46a0e06cdfe6
--- /dev/null
+++ b/Homework1_Login/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Mon Oct 25 21:05:54 CST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/Homework1_Login/gradlew b/Homework1_Login/gradlew
new file mode 100644
index 0000000000000000000000000000000000000000..4f906e0c811fc9e230eb44819f509cd0627f2600
--- /dev/null
+++ b/Homework1_Login/gradlew
@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  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 "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+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 or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; 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=`expr $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"
+
+exec "$JAVACMD" "$@"
diff --git a/Homework1_Login/gradlew.bat b/Homework1_Login/gradlew.bat
new file mode 100644
index 0000000000000000000000000000000000000000..107acd32c4e687021ef32db511e8a206129b88ec
--- /dev/null
+++ b/Homework1_Login/gradlew.bat
@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@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 Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@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="-Xmx64m" "-Xms64m"
+
+@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 execute
+
+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 execute
+
+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
+
+: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 %*
+
+: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/Homework1_Login/settings.gradle b/Homework1_Login/settings.gradle
new file mode 100644
index 0000000000000000000000000000000000000000..cf652b8e737a604a3494204edbccdbc6ed8b5ee1
--- /dev/null
+++ b/Homework1_Login/settings.gradle
@@ -0,0 +1,10 @@
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+rootProject.name = "Homework1_Login"
+include ':app'
diff --git a/git.txt b/git.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0103856e7023e117285a946ea4df5c245ead52f8
--- /dev/null
+++ b/git.txt
@@ -0,0 +1,7 @@
+git clone :克隆版本库，就是把项目从服务器上下载下来。
+cd：进入指定的文件目录。
+git checkout -b ：创建并切换到指定给的分支
+git add .：add ：添加文件到暂存区
+                  .：当前目录下的所有文件
+git commit -m ：提交暂存区文件到本地仓库中，-m后可加注释
+git push origin：将本地分支代码推送到主分支
\ No newline at end of file