diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 5203b9e..3f0c202 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -48,7 +48,17 @@ dependencies {
     testImplementation(libs.junit)
     androidTestImplementation(libs.androidx.junit)
     androidTestImplementation(libs.androidx.espresso.core)
+    // RecyclerView
+    implementation("androidx.recyclerview:recyclerview:1.3.2")
 
+    // OkHttp
+    implementation("com.squareup.okhttp3:okhttp:4.12.0")
+
+    // Gson (用于解析 JSON)
+    implementation("com.google.code.gson:gson:2.10.1")
+
+    // Kotlin 协程
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.7.3")
 
     // CameraX 用于相机预览
     implementation("androidx.camera:camera-camera2:1.3.0")
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 5ca0a3c..58db0e4 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
-
+    <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.CAMERA" />
 
     <uses-feature
diff --git a/app/src/main/java/com/example/defenseapplication/okhttp/ApiService.kt b/app/src/main/java/com/example/defenseapplication/okhttp/ApiService.kt
new file mode 100644
index 0000000..b5eadfc
--- /dev/null
+++ b/app/src/main/java/com/example/defenseapplication/okhttp/ApiService.kt
@@ -0,0 +1,16 @@
+package com.example.defenseapplication.okhttp
+
+import com.google.gson.Gson
+import com.google.gson.reflect.TypeToken
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import java.io.IOException
+
+object ApiService {
+    private const val BASE_URL = "https://stem-boozy-margarine.ngrok-free.dev"
+    private val client = OkHttpClient()
+    private val gson = Gson()
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/defenseapplication/okhttp/DataClass.kt b/app/src/main/java/com/example/defenseapplication/okhttp/DataClass.kt
new file mode 100644
index 0000000..a8014f3
--- /dev/null
+++ b/app/src/main/java/com/example/defenseapplication/okhttp/DataClass.kt
@@ -0,0 +1,8 @@
+package com.example.defenseapplication.okhttp
+
+data class Post(
+    val userId: Int,
+    val id: Int,
+    val title: String,
+    val body: String
+)
\ No newline at end of file
diff --git a/app/src/main/java/com/example/defenseapplication/okhttp/OkHttpClient.kt b/app/src/main/java/com/example/defenseapplication/okhttp/OkHttpClient.kt
deleted file mode 100644
index ec7ca48..0000000
--- a/app/src/main/java/com/example/defenseapplication/okhttp/OkHttpClient.kt
+++ /dev/null
@@ -1,4 +0,0 @@
-package com.example.defenseapplication.okhttp
-
-class OkHttpClient {
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/defenseapplication/view/FaceOverlayView.kt b/app/src/main/java/com/example/defenseapplication/view/FaceOverlayView.kt
index d894c7d..6bd78fc 100644
--- a/app/src/main/java/com/example/defenseapplication/view/FaceOverlayView.kt
+++ b/app/src/main/java/com/example/defenseapplication/view/FaceOverlayView.kt
@@ -4,20 +4,31 @@ import android.content.Context
 import android.graphics.Canvas
 import android.graphics.Color
 import android.graphics.Paint
+import android.graphics.Path
+import android.graphics.RectF
 import android.util.AttributeSet
 import android.view.View
 import com.google.mlkit.vision.face.Face
 
 class FaceOverlayView(context: Context, attrs: AttributeSet?) : View(context, attrs) {
-    private val paint = Paint().apply {
-        color = Color.GREEN
+    private val framePaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        color = Color.WHITE
         style = Paint.Style.STROKE
-        strokeWidth = 4f
+        strokeWidth = 6f
     }
-    private val textPaint = Paint().apply {
-        color = Color.YELLOW
-        textSize = 40f
+    private val maskPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        color = Color.parseColor("#7A000000")
+        style = Paint.Style.FILL
     }
+
+    private val facePaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        color = Color.parseColor("#80FFFFFF")
+        style = Paint.Style.STROKE
+        strokeWidth = 3f
+    }
+
+    private val maskPath = Path()
+    private val frameRect = RectF()
     private var faces = mutableListOf<Face>()
 
     fun setFaces(faces: List<Face>) {
@@ -27,10 +38,27 @@ class FaceOverlayView(context: Context, attrs: AttributeSet?) : View(context, at
 
     override fun onDraw(canvas: Canvas) {
         super.onDraw(canvas)
+
+        val cx = width / 2f
+        val cy = height * 0.45f
+        val radius = minOf(width, height) * 0.31f
+
+        maskPath.reset()
+        maskPath.addRect(0f, 0f, width.toFloat(), height.toFloat(), Path.Direction.CW)
+        maskPath.addCircle(cx, cy, radius, Path.Direction.CCW)
+        canvas.drawPath(maskPath, maskPaint)
+        canvas.drawCircle(cx, cy, radius, framePaint)
+
+        frameRect.set(cx - radius, cy - radius, cx + radius, cy + radius)
         for (face in faces) {
             val rect = face.boundingBox
-            canvas.drawRect(rect, paint)
-            canvas.drawText("Face", rect.left.toFloat(), rect.top - 10f, textPaint)
+            val clippedLeft = rect.left.coerceAtLeast(frameRect.left.toInt()).toFloat()
+            val clippedTop = rect.top.coerceAtLeast(frameRect.top.toInt()).toFloat()
+            val clippedRight = rect.right.coerceAtMost(frameRect.right.toInt()).toFloat()
+            val clippedBottom = rect.bottom.coerceAtMost(frameRect.bottom.toInt()).toFloat()
+            if (clippedRight > clippedLeft && clippedBottom > clippedTop) {
+                canvas.drawRect(clippedLeft, clippedTop, clippedRight, clippedBottom, facePaint)
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/res/drawable/bg_bottom_gradient.xml b/app/src/main/res/drawable/bg_bottom_gradient.xml
new file mode 100644
index 0000000..32c7663
--- /dev/null
+++ b/app/src/main/res/drawable/bg_bottom_gradient.xml
@@ -0,0 +1,6 @@
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <gradient
+        android:startColor="#00000000"
+        android:endColor="#E0000000"
+        android:angle="90" />
+</shape>
\ No newline at end of file
diff --git a/app/src/main/res/layout/face_verification_activity.xml b/app/src/main/res/layout/face_verification_activity.xml
index af7d02a..bed96b9 100644
--- a/app/src/main/res/layout/face_verification_activity.xml
+++ b/app/src/main/res/layout/face_verification_activity.xml
@@ -6,7 +6,6 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".login.FaceVerificationActivity">
-
     <androidx.camera.view.PreviewView
         android:id="@+id/previewView"
         android:layout_width="match_parent"
@@ -17,4 +16,118 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
 
+    <View
+        android:id="@+id/statusBarPlaceholder"
+        android:layout_width="match_parent"
+        android:layout_height="36dp"
+        android:background="#26000000"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toTopOf="@+id/topContainer" />
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/topContainer"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:paddingStart="16dp"
+        android:paddingTop="8dp"
+        android:paddingEnd="16dp"
+        android:paddingBottom="8dp"
+        app:layout_constraintTop_toBottomOf="@id/statusBarPlaceholder"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent">
+
+        <ImageView
+            android:id="@+id/backIcon"
+            android:layout_width="24dp"
+            android:layout_height="24dp"
+            android:contentDescription="@null"
+            android:src="@drawable/ic_back_arrow"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <TextView
+            android:id="@+id/tvTitle"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="人脸采集"
+            android:textColor="@android:color/white"
+            android:textSize="22sp"
+            android:textStyle="bold"
+            app:layout_constraintBottom_toBottomOf="@id/backIcon"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="@id/backIcon" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <LinearLayout
+        android:id="@+id/hintContainer"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:orientation="horizontal"
+        android:paddingStart="16dp"
+        android:paddingEnd="16dp"
+        app:layout_constraintBottom_toTopOf="@id/bottomContainer"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent">
+
+        <ImageView
+            android:layout_width="12dp"
+            android:layout_height="12dp"
+            android:layout_marginEnd="8dp"
+            android:contentDescription="@null"
+            android:src="@drawable/ic_red_dot" />
+
+        <TextView
+            android:id="@+id/tvFaceHint"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="请将人脸放入圆形区域内"
+            android:textColor="@android:color/white"
+            android:textSize="20sp"
+            android:textStyle="bold"
+            android:letterSpacing="0.03" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:id="@+id/bottomContainer"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:paddingHorizontal="24dp"
+        android:paddingTop="20dp"
+        android:paddingBottom="28dp"
+        android:background="@drawable/bg_bottom_gradient"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent">
+
+    <android.widget.Button
+        android:id="@+id/btnCaptureFace"
+        android:layout_width="match_parent"
+        android:layout_height="50dp"
+        android:text="采集人脸"
+        android:textAllCaps="false"
+        android:textSize="17sp"
+        android:textStyle="bold"
+        android:background="@drawable/bg_capture_face_button"
+        android:textColor="#F2FFFFFF" />
+    </LinearLayout>
+
+    <ProgressBar
+        android:id="@+id/progressBar"
+        style="?android:attr/progressBarStyleLarge"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:visibility="gone"
+        android:background="#AA000000"
+        android:indeterminateTint="@color/white"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 8109c71..b6b0314 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -10,5 +10,6 @@
     <color name="face">#F0F0F0</color>
     <color name="ic_selected">#000000 </color>
     <color name="ic_normal">#999999 </color>
+    <color name="ic_gray">#99000000 </color>
 
 </resources>
\ No newline at end of file