Android : download function in separate thread

in my android application there gonna be some files to download once in a while. so I've written a download function like this:

public static void download(Context context, String url, String path) {
   URLConnection conection = new URL(url).openConnection();
   conection.connect();
   InputStream is = new URL(url).openStream();
   OutputStream os = context.openFileOutput(path, 0);
   pipe(is, os);   // write from inputstream to outputstream
   os.close();
}

I can't decide to put this function in a separate thread or not?

when I put it in a separate thread then if I want to downalod 10 files with a for-loop then all of them begin downloading in 10 simultaneously separate threads which is not good! when I don't put in a separate thread then main thread must wait till the downloading finishes which is not good too!

what's the solution?