Converting Retrofit Response to String.

IUtils.java

@Nullable
    /**
     * Converts {@link retrofit.client.Response#body} to simple {@link java.lang.String} representation.
     * This can be used to log message or manually parse JSON or any other purpose.
     * @param response
     * @return
     */
    public static String toString(@NonNull Response response) {

        if (response == null) {
            return null;
        }

        TypedInput body = response.getBody();
        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(body.in()));
            StringBuilder outString = new StringBuilder();
            String newLine = System.getProperty("line.separator");
            String line;
            while ((line = reader.readLine()) != null) {
                outString.append(line);
                outString.append(newLine);
            }

            // Prints the correct String representation of body.
            return outString.toString();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return null;
    }