Update Android app login, home, and face verification flows.

Sync current local UI and activity changes to remote repository.

Made-with: Cursor

app/src/main/java/com/example/defenseapplication/view/FaceAnalyzer.kt

@@ -1,4 +1,44 @@
 package com.example.defenseapplication.view
 
-class FaceAnalyzer {
+import android.os.Handler
+import android.os.Looper
+import android.util.Log
+import androidx.camera.core.ExperimentalGetImage
+import androidx.camera.core.ImageAnalysis
+import androidx.camera.core.ImageProxy
+import com.google.mlkit.vision.common.InputImage
+import com.google.mlkit.vision.face.FaceDetector
+/*
+* 人脸分析器
+* */
+@ExperimentalGetImage
+class FaceAnalyzer(
+    private val detector: FaceDetector?,
+    private val overlayView: FaceOverlayView
+) : ImageAnalysis.Analyzer {
+
+    override fun analyze(imageProxy: ImageProxy) {
+        if (detector == null) {
+            imageProxy.close()
+            return
+        }
+        val mediaImage = imageProxy.image ?: run {
+            imageProxy.close()
+            return
+        }
+        val image = InputImage.fromMediaImage(mediaImage, imageProxy.imageInfo.rotationDegrees)
+
+        detector.process(image)
+            .addOnSuccessListener { faces ->
+                Handler(Looper.getMainLooper()).post {
+                    overlayView.setFaces(faces)
+                }
+            }
+            .addOnFailureListener { e ->
+                Log.e("FaceAnalyzer", "人脸检测失败", e)
+            }
+            .addOnCompleteListener {
+                imageProxy.close()
+            }
+    }
 }

app/src/main/java/com/example/defenseapplication/view/FaceOverlayView.kt

@@ -1,2 +1,36 @@
 package com.example.defenseapplication.view
 
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Color
+import android.graphics.Paint
+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
+        style = Paint.Style.STROKE
+        strokeWidth = 4f
+    }
+    private val textPaint = Paint().apply {
+        color = Color.YELLOW
+        textSize = 40f
+    }
+    private var faces = mutableListOf<Face>()
+
+    fun setFaces(faces: List<Face>) {
+        this.faces = faces.toMutableList()
+        invalidate()  // 触发 onDraw
+    }
+
+    override fun onDraw(canvas: Canvas) {
+        super.onDraw(canvas)
+        for (face in faces) {
+            val rect = face.boundingBox
+            canvas.drawRect(rect, paint)
+            canvas.drawText("Face", rect.left.toFloat(), rect.top - 10f, textPaint)
+        }
+    }
+}