arraylist 를 json을 이용해 sharedpreference에 넣고 가져 옴 String, Integer, boolean refer to GXCount.app void setStringArrayPref(String key, ArrayList values) { SharedPreferences.Editor editor = sharedPreferences.edit(); JSONArray a = new JSONArray(); for (int i = 0; i < values.size(); i++) { a.put(values.get(i)); } if (!values.isEmpty()) { editor.putString(key, a.toString()); } else { editor.putString(key..