java - ARCore ArSceneView 捕获位图

Question

我正在尝试添加一个屏幕截图按钮，用于捕获 ARCore 相机 View 的屏幕截图，包括附加的节点。

我尝试了几种不同的方法，所有方法都能够捕获屏幕上的其他内容，但 ARSceneView 始终是透明的。

我尝试过的事情:

ArFragment arFragment = (ArFragment) getSupportFragmentManager().findFragmentById(R.id.ux_fragment);
View view = arFragment.getARSceneView(); //Also tried arFragment.getView();

(1)

view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache());
view.setDrawingCacheEnabled(false);

(2)

Bitmap bitmap = getBitmapFromView(view);

public Bitmap getBitmapFromView(View view) {
        view.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
        view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
        view.buildDrawingCache();
        Bitmap returnedBitmap = Bitmap.createBitmap(view.getMeasuredWidth(), view.getMeasuredHeight(),
                Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(returnedBitmap);
        Drawable drawable = view.getBackground();
        if (drawable != null)
            drawable.draw(canvas);
        view.draw(canvas);
        return returnedBitmap;
    }

我也知道你可以从ARFragment获取图像，但它返回一个空白的透明图像

Image image = arFragment.getArSceneView().getArFrame().acquireCameraImage();
//image is completely transparent and wrong size

Answer 1

您可以使用 PixelCopy.request()

ArSceneView view = fragment.getArSceneView();
final Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888);
PixelCopy.request(view, bitmap, (copyResult) -> {
  if (copyResult == PixelCopy.SUCCESS) {
    // Save bitmap
  } else {
      // Error
  }
}, handler);

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