Unable to invoke no-args constructor for Product.class

Question

I am Using GSON and Volley library for networking in my android application but while converting the Json response to Model classes using Gson i am getitng the following err

Answer 1

problem solved, I am doing a foolish call To Gson because i am obtaining a Product class that contains list of other Classes(Result.class etc) but i am sending Product[].class to Gson to convert Hence it thrown exception.

Answer 2

Your model having private attribute you must create setter for the same or create constructor with all parameter like below:

public class Product {

    private String status;
    private List<Result> results = new ArrayList<Result>();
    private Pagination pagination;

    public void setStatus(String status) {
        this.status = status;
    }

    public void setResults(List<Result> results) {
        this.results = results;
    }

    public void setPagination(Pagination pagination) {
        this.pagination = pagination;
    }
}

or

public class Product {

    private String status;
    private List<Result> results = new ArrayList<Result>();
    private Pagination pagination;

    public Product(String status, List<Result> results, Pagination pagination) {
        this.status = status;
        this.results = results;
        this.pagination = pagination;
    }

}

Answer 3

Add default constructor for all classes. Example:

public class Product{

    public Product(){
    }

}

Answer 4

Just add an no argument constructor for the Bean class.

public class Product{

  public Tweet(){
  }

}