Question

I´m trying to merge 2 images, one is bitmap from camera, second one is .png file stored in drawables. What I did was that I used both images as bitmaps and I tried to merge them by using canvas, something like this:

Bitmap topImage = BitmapFactory.decodeFile("gui.png");
Bitmap bottomImage = BitmapFactory.decodeByteArray(arg0, 0, arg0.length);

Canvas canvas = new Canvas(bottomImage);
canvas.drawBitmap(topImage, 0, 0, null);

But I keep getting “Bitmap size exceeds VM budget” error all the time. I tried nearly everything, but still, it keeps throwing this error. Is there another way of merging 2 images? What i need to do is simple – I need to take photo and save it merged with that .PNG image stored in drawables. For example this app is very close to what i need – https://play.google.com/store/apps/details?id=com.hl2.hud&feature=search_result#?t=W251bGwsMSwyLDEsImNvbS5obDIuaHVkIl0.

Thanks 🙂

Answer 1

See the below code for combining two images.
This method returns combined bitmap

public Bitmap combineImages(Bitmap frame, Bitmap image) {
        Bitmap cs = null;
        Bitmap rs = null;

        rs = Bitmap.createScaledBitmap(frame, image.getWidth() + 50,
                image.getHeight() + 50, true);

        cs = Bitmap.createBitmap(rs.getWidth(), rs.getHeight(),
                Bitmap.Config.RGB_565);

        Canvas comboImage = new Canvas(cs);

        comboImage.drawBitmap(image, 25, 25, null);
        comboImage.drawBitmap(rs, 0, 0, null);
        if (rs != null) {
            rs.recycle();
            rs = null;
        }
        Runtime.getRuntime().gc();
        return cs;
    }

You can change height and width as per your requirements
Hope this will help…