Firebase , classmaper : no setter/field found for 'UserTwo' on class 'myclass'

Question

So firebase keeps giving me nullpointer exception , and also that it can\'t find any setter/field on class \'ChatModel\' , here is my chatModel class :

package e         


        

Answer 1

The POJO class does not have the same structure with the database.

Change your ChatModel class fields to

public class ChatModel {
    public Map Messages = new HashMap<>();
    public String UserOne;
    public String UserTwo;

    // constructor
    // setter and getter
}