Slip a new SQLite database file into the application database path for an Android application. This can also be used to copy and paste any file to virtually any other location on an Android device.

Android Byte Level File Transfer

try {

    File appDbFile = getActivity().getApplicationContext().getDatabasePath("myDatabase");
    File sourceDbFile = new File("/sdcard/downloads/myDatabase.db");

    //Make sure the  directory and file exist
    File dir = new File("/data/data/" +getActivity().getPackageName() + "/databases/");
    if (!dir.exists()) {

        boolean result = dir.mkdir();
    }
    if (!appDbFile.exists()) {

        boolean result = appDbFile.createNewFile();
    }

    //begin transfer
    if (sourceDbFile.canRead()) {

        if (appDbFile.canRead()) {

          InputStream in = new FileInputStream(sourceDbFile);
          OutputStream out = new FileOutputStream(appDbFile);

          // Transfer bytes from in to out
          byte[] buf = new byte[1024];
          int len;
          //Byte Firehose
          //It goes ffffffsssssssshshhhhhhhhhhhhh!!!!!!!
          while ((len = in.read(buf)) > 0) {
              out.write(buf, 0, len);
          }
          
          in.close();
          out.close();
          Log.v(LOGTAG, "Finished YAY!!!!! CELEBRATIONS!!");
          sourceReadyListener.onSourceReady();
          
        } else {
          
          Log.e(LOGTAG,"Error Accessing Database File");
        }
    }
  }
  catch(FileNotFoundException e) {

      Log.e(LOGTAG, e.getMessage());
  }
  catch(IOException e) {

      Log.e(LOGTAG, e.getMessage());
  }