Merge two bitmaps in android

Question

I want to merge two bitmaps, here is my code

// Camera arg conversion to Bitmap
                    Bitmap cameraBitmap = BitmapFactory.decodeByteArray(arg0,         


        

Answer 1

Resize watermark image same size as original image

Uri bmpUri1 = getLocalBitmapUri(ivImage);
Uri bmpUri2 = getLocalBitmapUri(watermark_imageview);

try {
    bm1 = BitmapFactory.decodeStream(
            getContentResolver().openInputStream(bmpUri1));
    bm2 = BitmapFactory.decodeStream(
            getContentResolver().openInputStream(bmpUri2));

    Bitmap bmOverlay = Bitmap.createBitmap(bm1.getWidth(), bm1.getHeight(), bm1.getConfig());
    bm2 = Bitmap.createScaledBitmap(bm2, bm1.getWidth(), bm1.getHeight(),
            true);

    Canvas canvas = new Canvas(bmOverlay);
    canvas.drawBitmap(bm1, 0,0, null);
    canvas.drawBitmap(bm2, 0,0, null);
    watermarkimage.setVisibility(View.GONE);
    im =new ImageView(ImageClick.this);
    im.setImageBitmap(bmOverlay);
    bmpUri = getLocalBitmapUri(im);
} catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

private Uri getLocalBitmapUri(ImageView imageView) {
    Drawable drawable = imageView.getDrawable();
    Bitmap bmp = null;
    if (drawable instanceof BitmapDrawable){
        bmp = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
    } else {
        return null;
    }
    // Store image to default external storage directory
    Uri bmpUri = null;
    try {
        File file =  new File(Environment.getExternalStoragePublicDirectory(
                Environment.DIRECTORY_DOWNLOADS), "share_image_" + System.currentTimeMillis() + ".png");
        file.getParentFile().mkdirs();
        FileOutputStream out = new FileOutputStream(file);
        bmp.compress(Bitmap.CompressFormat.PNG, 90, out);
        out.close();
        bmpUri = Uri.fromFile(file);
    } catch (IOException e) {
        e.printStackTrace();
    }
    return bmpUri;
}