Problem converting Bitmap to JPEG image on Android

I have an application that places Stickers on an image for editing purposes. I want to convert this view, which is in a RelativeLayout, to an image, and save it to the device.

I use a library that converts Layouts to images, however, the application or hangs, or shrinks the image by removing the stickers, without saving. Follow the code. I'm a beginner on Android and I do not know if I'm doing things the right way.

if (item.getItemId() == R.id.main_save_croqui) {
        Layout_to_Image layout_to_image;
        RelativeLayout relativeLayout;
        Bitmap bitmap;
        relativeLayout=(RelativeLayout)findViewById(R.id.activity_main);
        layout_to_image=new Layout_to_Image(MainActivity.this,relativeLayout);
        bitmap=layout_to_image.convert_layout();
        try {
            Date now = new Date();
            String nomeImagem = Environment.getExternalStorageState().toString()+"/"+now+".jpg";
            ByteArrayOutputStream stream = new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
            byte[] bitmapdata = stream.toByteArray();
            File img = new File(nomeImagem, "croqui.jpg");
            FileOutputStream outputStream = new FileOutputStream(img, false);
            outputStream.write(bitmapdata, 0, bitmapdata.length);
            outputStream.flush();
            outputStream.close();
        } catch (Throwable e){
            e.printStackTrace();

        }