Java @列表中的类型转换器<；SomeObject>；在房间中字符串Android gson.toJson（List<；SomeObject>；）

错误： java.lang.IllegalArgumentException:class android.widget.SeekBar声明了多个名为mMinHeight的JSON字段

我的打字机

public class ObjectConverter {

    private static Gson gson= new Gson();

    @TypeConverter
    public static List<DynamicItem> fromString(String s){


        if (s == null) {
            return Collections.emptyList();
        }

        Type listType = new TypeToken<List<DynamicItem>>() {}.getType();

        return gson.fromJson(s, listType);

    }
    @TypeConverter
    public static String fromObject(List<DynamicItem> someObjects) {

        //Error in the following line
        return gson.toJson(someObjects,new TypeToken<List<DynamicItem>>() {}.getType());
    }
}

添加数据

@Override
    protected Void doInBackground(Void... voids) {

                Calendar calendar = Calendar.getInstance();
                String time = new SimpleDateFormat("HH:mm:ss").format(calendar.getTime());

                String date = new SimpleDateFormat("dd-MM-yyyy").format(calendar.getTime());


                busItem.setProxyObj(busItemList);
                allTypes.setType("BUS_N");
                allTypes.setTimeStamp(date + time);
                allTypes.setBusItem(busItem);
                allTypes.setTag(stag);


                //adding to database
                DBClient.getInstance(getApplicationContext()).getNotesDB()
                        .notesDao()
                        .insertAllTypes(allTypes);

                return null;
            }

DynamicItem

public class DynamicItem {

CustomEditText customEditText;
ImageView imageUri;
AudioItem audioItem;
String header;
String htmlEditText;

//Getters and Setters
}

我正在尝试在数据库中保存dynamicItems列表。该关系是（所有类型和业务项）（所有类型和简单）之间的一种关系。

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return gson.toJson（someObjects）我已经试过了return gson.toJson（someObjects）我已经试过了

@Override
    protected Void doInBackground(Void... voids) {

                Calendar calendar = Calendar.getInstance();
                String time = new SimpleDateFormat("HH:mm:ss").format(calendar.getTime());

                String date = new SimpleDateFormat("dd-MM-yyyy").format(calendar.getTime());


                busItem.setProxyObj(busItemList);
                allTypes.setType("BUS_N");
                allTypes.setTimeStamp(date + time);
                allTypes.setBusItem(busItem);
                allTypes.setTag(stag);


                //adding to database
                DBClient.getInstance(getApplicationContext()).getNotesDB()
                        .notesDao()
                        .insertAllTypes(allTypes);

                return null;
            }

public class DynamicItem {

CustomEditText customEditText;
ImageView imageUri;
AudioItem audioItem;
String header;
String htmlEditText;

//Getters and Setters
}