Problem when using Jackson json parser in Android.
I really like to use Jackson library to parse json string. Just now met a problem org.codehaus.jackson.JsonParseException: Illegal unquoted character ((CTRL-CHAR, code 10)): has to be escaped using backslash to be included in string value The reason is my string contains some newline symbols. Then actually the string is not "valid" or "formatted" Json . Finally I found one quick solution . try { JSONObject b = new JSONObject ( decodedPayload ); decodedPayload = b . toString (); } catch ( JSONException e ) { e . printStackTrace (); } That JSONObject can formatted that unformatted json string . Might be there are some other better solution.