save code

app/android/java/com/khronos/vulkan_samples/MainActivity.java

@@ -2,47 +2,61 @@ package com.khronos.vulkan_samples;
 
 
 import android.Manifest;
-import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.graphics.Color;
+import android.graphics.PixelFormat;
+import android.graphics.SurfaceTexture;
 import android.os.Bundle;
 import android.util.Log;
+import android.view.Surface;
+import android.view.SurfaceView;
+import android.view.TextureView;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.Button;
+import android.widget.FrameLayout;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
-import androidx.camera.core.Camera;
 import androidx.camera.core.CameraSelector;
 import androidx.camera.core.Preview;
+import androidx.camera.core.SurfaceRequest;
 import androidx.camera.lifecycle.ProcessCameraProvider;
-import androidx.camera.view.PreviewView;
 import androidx.core.app.ActivityCompat;
 import androidx.core.content.ContextCompat;
 
 import com.google.androidgamesdk.GameActivity;
 import com.google.common.util.concurrent.ListenableFuture;
-import com.google.mediapipe.examples.facelandmarker.FaceLandmarkerHelper;
-
 import java.util.concurrent.ExecutionException;
-import java.util.concurrent.ExecutorService;
 
 public class MainActivity extends GameActivity {
-    private PreviewView previewView;
+    private TextureView textureView; // 使用 TextureView 替代 PreviewView
     private ProcessCameraProvider cameraProvider;
+    private FrameLayout containerLayout;
     private void initCamera(){
-        // 创建摄像头预览视图
-        previewView = new PreviewView(this);
-        previewView.setImplementationMode(PreviewView.ImplementationMode.COMPATIBLE);
-        previewView.setScaleType(PreviewView.ScaleType.FILL_CENTER);
+        // 获取 GameActivity 的根视图
+        ViewGroup rootView = (ViewGroup) getWindow().getDecorView();
 
-        addContentView(previewView, new ViewGroup.LayoutParams(
+        // 创建容器布局
+        containerLayout = new FrameLayout(this);
+        containerLayout.setLayoutParams(new ViewGroup.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,
                 ViewGroup.LayoutParams.MATCH_PARENT
         ));
 
-        bringVulkanToFront();
+        // 创建 TextureView 用于摄像头预览
+        textureView = new TextureView(this);
+        textureView.setLayoutParams(new ViewGroup.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT
+        ));
+
+        // 将 TextureView 添加到容器
+        containerLayout.addView(textureView);
+
+        // 将容器添加到根视图的底部（作为背景）
+        //rootView.addView(containerLayout); // 添加到索引0（最底层）
+        rootView.addView(containerLayout, 0);
+
 
         if (hasCameraPermission()) {
             startCamera();
@@ -51,23 +65,6 @@ public class MainActivity extends GameActivity {
         }
     }
 
-    private void bringVulkanToFront() {
-        // 获取窗口的根视图
-        View rootView = getWindow().getDecorView();
-        if (rootView instanceof ViewGroup) {
-            ViewGroup rootGroup = (ViewGroup) rootView;
-
-            for (int i = rootGroup.getChildCount() - 1; i >= 0; i--) {
-                View child = rootGroup.getChildAt(i);
-                if (child != previewView) {
-                    child.bringToFront();
-                    child.setBackgroundColor(Color.TRANSPARENT);
-                    break;
-                }
-            }
-        }
-    }
-
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -115,7 +112,18 @@ public class MainActivity extends GameActivity {
                         .requireLensFacing(CameraSelector.LENS_FACING_BACK)
                         .build();
 
-                preview.setSurfaceProvider(previewView.getSurfaceProvider());
+                // 使用 TextureView 的 SurfaceTexture
+                SurfaceTexture surfaceTexture = textureView.getSurfaceTexture();
+                if (surfaceTexture != null) {
+                    Surface surface = new Surface(surfaceTexture);
+                    preview.setSurfaceProvider(new Preview.SurfaceProvider() {
+                        @Override
+                        public void onSurfaceRequested(@NonNull SurfaceRequest request) {
+                            request.provideSurface(surface, ContextCompat.getMainExecutor(MainActivity.this),
+                                    result -> {});
+                        }
+                    });
+                }
 
                 cameraProvider.bindToLifecycle(this, cameraSelector, preview);
 
@@ -125,6 +133,7 @@ public class MainActivity extends GameActivity {
         }, ContextCompat.getMainExecutor(this));
     }
 
+
     private static final int REQUEST_CODE_PERMISSIONS = 1001;
     private static final String[] REQUIRED_PERMISSIONS = new String[]{Manifest.permission.CAMERA};
     private static final String TAG = "MainActivity";