code: public static List<String> getImageIds( String formString ) throws Exception {
          List<String> imageIds = new ArrayList<String>();
          if (formString != null && formString.length() > 0) {
              JSONObject sectionObject = new JSONObject(formString);
              List<String> formsNames = Utilities.getFormNames4Section(sectionObject);
              for( String formName : formsNames ) {
                  JSONObject form4Name = Utilities.getForm4Name(formName, sectionObject);
                  JSONArray formItems = Utilities.getFormItems(form4Name);
                  for( int i = 0; i < formItems.length(); i++ ) {
                      JSONObject formItem = formItems.getJSONObject(i);
                      if (!formItem.has(Utilities.TAG_KEY)) {
                          continue;
                      }
  
                      String type = formItem.getString(Utilities.TAG_TYPE);
                      String value = "";
                      if (formItem.has(Utilities.TAG_VALUE))
                          value = formItem.getString(Utilities.TAG_VALUE);
  
                      if (type.equals(Utilities.TYPE_PICTURES)) {
                          if (value.trim().length() == 0) {
                              continue;
                          }
                          String[] imageSplit = value.split(";");
                          Collections.addAll(imageIds, imageSplit);
                      } else if (type.equals(Utilities.TYPE_MAP)) {
                          if (value.trim().length() == 0) {
                              continue;
                          }
                          String image = value.trim();
                          imageIds.add(image);
                      } else if (type.equals(Utilities.TYPE_SKETCH)) {
                          if (value.trim().length() == 0) {
                              continue;
                          }
                          String[] imageSplit = value.split(";");
                          Collections.addAll(imageIds, imageSplit);
                      }
                  }
              }
          }
          return imageIds;
      }
docs: Get the images paths out of a form string.
  
  @param formString the form.
  @return the list of images paths.
  @throws Exception if something goes wrong.