A task to download and save image to SD card with Glide

ImageSaveTask.java

public class ImageSaveTask extends AsyncTask<String, Void, Void> {
    private Context context;

    public ImageSaveTask(Context context) {
        this.context = context;
    }

    @Override
    protected Void doInBackground(String... params) {
        if (params == null || params.length < 2) {
            throw new IllegalArgumentException("You should offer 2 params, the first for the image source url, and the other for the destination file save path");
        }

        String src = params[0];
        String dst = params[1];

        try {
            File file = Glide.with(context)
                    .load(src)
                    .downloadOnly(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL)
                    .get();

            File dstFile = new File(dst);
            if (!dstFile.exists()) {
                boolean success = dstFile.createNewFile();
                if (!success) {
                    return null;
                }
            }

            InputStream in = null;
            OutputStream out = null;

            try {
                in = new BufferedInputStream(new FileInputStream(file));
                out = new BufferedOutputStream(new FileOutputStream(dst));

                byte[] buf = new byte[1024];
                int len;
                while ((len = in.read(buf)) > 0) {
                    out.write(buf, 0, len);
                }
                out.flush();
            } finally {
                if (in != null) {
                    try {
                        in.close();
                    } catch (IOException e1) {
                        e1.printStackTrace();
                    }
                }

                if (out != null) {
                    try {
                        out.close();
                    } catch (IOException e1) {
                        e1.printStackTrace();
                    }
                }
            }
        } catch (InterruptedException | ExecutionException | IOException e) {
            e.printStackTrace();
        }

        return null;
    }
}

What a lovely piece of code. I would like to ask 2 things:

1. How do I use this code to load images into the ANdroid file system? It is an AsyncTask, but I tried some methods to run it in the background which I could not make work.
2. Can this run in the foreground instead? I am a bit green on Android task system 👍
3. In case we can use it, how do we remunerate you for this code snippet?