The GraphicOverlay width changes when trying to save the LensEnginePreview as Bitmap

[Mouaad Abdelghafour AIT ALI]

Hi, I'm using the Gesture-Change-Background as a main source on my project, but I ran into a problem, when I try to save the LensEnginePreview as Bitmap, the GraphicOverlay image width changes :

Why this happening?

[Peng]

Could you show me your code? The possible cause is that the value range should be 0-255.We've done some post-processing on the images.Please carefully find the relevant code in the project.

[Mouaad Abdelghafour AIT ALI]

@SoftwareGift thank you for your comment, please let me explain the whole scenario, because there's no way to record the video (record what happen inside LensEnginePreview), I tried to capture the view and converting it to Bitmap, every second I pass the bitmap to MediaRecorder in order to generate a video file.

The issue, is related to the Bitmap inside GraphicOverlay, I don't know why but when I try to convert the LensEnginePreview to Bitmap The image loses its width.

Regarding the code : I've tried to use the same code in the Gesture-Change-Background and the same issue happened.

View to Bitmap (Using Kotlin KTX) :

    fun view2Bitmap(lens: LensEnginePreview): Bitmap {
        return lens.drawToBitmap()
    }

View to Bitmap :

public static Bitmap view2Bitmap(final View view) {
        if (view == null) return null;
        boolean drawingCacheEnabled = view.isDrawingCacheEnabled();
        boolean willNotCacheDrawing = view.willNotCacheDrawing();
        view.setDrawingCacheEnabled(true);
        view.setWillNotCacheDrawing(false);
        Bitmap drawingCache = view.getDrawingCache();
        Bitmap bitmap;
        if (null == drawingCache || drawingCache.isRecycled()) {
            view.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
                    View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
            view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
            view.buildDrawingCache();
            drawingCache = view.getDrawingCache();
            if (null == drawingCache || drawingCache.isRecycled()) {
                bitmap = Bitmap.createBitmap(view.getMeasuredWidth(), view.getMeasuredHeight(), Bitmap.Config.RGB_565);
                Canvas canvas = new Canvas(bitmap);
                view.draw(canvas);
            } else {
                bitmap = Bitmap.createBitmap(drawingCache);
            }
        } else {
            bitmap = Bitmap.createBitmap(drawingCache);
        }
        view.setWillNotCacheDrawing(willNotCacheDrawing);
        view.setDrawingCacheEnabled(drawingCacheEnabled);
        return bitmap;
    }

please use one of the above code in the Gesture-Change-Background project, and you will see what I'm talking about.

Thank you

[Peng]

The pixel value of the image ranges from 0 to 255. You can write the bitmap value to a txt file and see if the value is the same as you expected.

[Mouaad Abdelghafour AIT ALI]

I've managed to fix this issue, thank you