save code

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

@@ -6,16 +6,13 @@ import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.graphics.Color;
 import android.os.Bundle;
-import android.os.Debug;
 import android.util.Log;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.Toast;
 
-import androidx.activity.EdgeToEdge;
 import androidx.annotation.NonNull;
-import androidx.appcompat.app.AppCompatActivity;
 import androidx.camera.core.Camera;
 import androidx.camera.core.CameraSelector;
 import androidx.camera.core.Preview;
@@ -23,9 +20,6 @@ import androidx.camera.lifecycle.ProcessCameraProvider;
 import androidx.camera.view.PreviewView;
 import androidx.core.app.ActivityCompat;
 import androidx.core.content.ContextCompat;
-import androidx.core.graphics.Insets;
-import androidx.core.view.ViewCompat;
-import androidx.core.view.WindowInsetsCompat;
 
 import com.google.androidgamesdk.GameActivity;
 import com.google.common.util.concurrent.ListenableFuture;
@@ -33,31 +27,23 @@ import com.google.mediapipe.examples.facelandmarker.FaceLandmarkerHelper;
 
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
 
 public class MainActivity extends GameActivity {
-
-
-    private ExecutorService backgroundExecutor;
-    private FaceLandmarkerHelper faceLandmarkerHelper;
-
     private PreviewView previewView;
     private ProcessCameraProvider cameraProvider;
-    private Camera camera;
-
     private void initCamera(){
-        // 添加 PreviewView 用于摄像头预览
+        // 创建摄像头预览视图
         previewView = new PreviewView(this);
         previewView.setImplementationMode(PreviewView.ImplementationMode.COMPATIBLE);
+        previewView.setScaleType(PreviewView.ScaleType.FILL_CENTER);
 
-        // 将 PreviewView 添加到布局中
         addContentView(previewView, new ViewGroup.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,
-                ViewGroup.LayoutParams.MATCH_PARENT));
+                ViewGroup.LayoutParams.MATCH_PARENT
+        ));
 
-//        ensureVulkanLayerTransparent();
+        bringVulkanToFront();
 
-        // 检查权限并启动相机
         if (hasCameraPermission()) {
             startCamera();
         } else {
@@ -65,6 +51,24 @@ 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) {
         String native_lib_name = getResources().getString(R.string.native_lib_name);
@@ -80,42 +84,8 @@ public class MainActivity extends GameActivity {
         super.onCreate(savedInstanceState);
 
         initCamera();
+
         Log.i("MainActivity", "onCreate: ");
-
-        // 添加按钮到布局
-//        addButtonToLayout();
-
-//        backgroundExecutor = Executors.newSingleThreadExecutor();
-//        backgroundExecutor.execute(new Runnable() {
-//            @Override
-//            public void run() {
-//                if (faceLandmarkerHelper.isClose()) {
-//                    faceLandmarkerHelper.setupFaceLandmarker();
-//                }
-//            }
-//        });
-    }
-
-    private void ensureVulkanLayerTransparent() {
-        // 延迟执行以确保 GameActivity 的视图已经创建
-        previewView.post(() -> {
-            ViewGroup rootView = (ViewGroup) getWindow().getDecorView().getRootView();
-            makeViewTransparent(rootView);
-        });
-    }
-
-    private void makeViewTransparent(ViewGroup viewGroup) {
-        for (int i = 0; i < viewGroup.getChildCount(); i++) {
-            View child = viewGroup.getChildAt(i);
-            if (child instanceof ViewGroup) {
-                makeViewTransparent((ViewGroup) child);
-            } else {
-                // 找到可能是 Vulkan 渲染层的视图并设置为透明
-                if (child.getBackground() != null) {
-                    child.setBackgroundColor(Color.TRANSPARENT);
-                }
-            }
-        }
     }
 
     private boolean hasCameraPermission() {
@@ -139,19 +109,15 @@ public class MainActivity extends GameActivity {
             try {
                 cameraProvider = cameraProviderFuture.get();
 
-                // 创建预览用例
                 Preview preview = new Preview.Builder().build();
 
-                // 选择后置摄像头
                 CameraSelector cameraSelector = new CameraSelector.Builder()
                         .requireLensFacing(CameraSelector.LENS_FACING_BACK)
                         .build();
 
-                // 将预览绑定到 PreviewView
                 preview.setSurfaceProvider(previewView.getSurfaceProvider());
 
-                // 绑定到生命周期
+                cameraProvider.bindToLifecycle(this, cameraSelector, preview);
-                camera = cameraProvider.bindToLifecycle(this, cameraSelector, preview);
 
             } catch (ExecutionException | InterruptedException e) {
                 Log.e("MainActivity", "Error starting camera: " + e.getMessage());
@@ -185,42 +151,5 @@ public class MainActivity extends GameActivity {
         }
     }
 
-    private void addButtonToLayout() {
-        // 创建按钮
-        Button button = new Button(this);
-        button.setText("Vulkan 按钮");
-
-        // 设置按钮位置（使用绝对坐标）
-        button.setX(50);  // 距离左边50像素
-        button.setY(50);  // 距离顶部50像素
-
-        // 设置按钮点击事件
-        button.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                onButtonClicked();
-            }
-        });
-
-        // 将按钮添加到 GameActivity 的布局中（不会覆盖 Vulkan 表面）
-        addContentView(button, new ViewGroup.LayoutParams(
-                ViewGroup.LayoutParams.WRAP_CONTENT,
-                ViewGroup.LayoutParams.WRAP_CONTENT
-        ));
-    }
-
-
-    private void onButtonClicked() {
-        Toast.makeText(this, "Vulkan 按钮被点击了!", Toast.LENGTH_SHORT).show();
-        nativeButtonClicked();
-        // 启动SecondActivity
-        Intent intent = new Intent(MainActivity.this, SecondActivity.class);
-        // 可以传递数据
-        intent.putExtra("message", "Hello from MainActivity!");
-        startActivity(intent);
-    }
-
-    private native void nativeButtonClicked();
-
     private native void sendArgumentsToPlatform(String[] args);
 }