Android Room - error: Cannot figure out how to save this field into database

Question

Detailed log

error: Cannot figure out how to save this field into database. You can 
consider adding a type converter for it.
private final java.util.Date m         


        

Answer 1

All above answers is for list of strings.But below helps you to find converter for list of your objects.

Just in place of "YourClassName" ,add your Object class.

 @TypeConverter
        public String fromValuesToList(ArrayList<**YourClassName**> value) {
            if (value== null) {
                return (null);
            }
            Gson gson = new Gson();
            Type type = new TypeToken>() {}.getType();
            return gson.toJson(value, type);
        }
    
        @TypeConverter
        public ArrayList<**YourClassName**> toOptionValuesList(String value) {
            if (value== null) {
                return (null);
            }
            Gson gson = new Gson();
            Type type = new TypeToken>() {
            }.getType();
            return gson.fromJson(value, type);
        }