Moshi JSON parsing.

League.java

public final class League {
  public final String franchise_id;
  public final String url;
  public final String name;
  public final String franchise_name;

  public League(String franchise_id, String url, String name, String franchise_name) {
    this.franchise_id = franchise_id;
    this.url = url;
    this.name = name;
    this.franchise_name = franchise_name;
  }

  @Override public String toString() {
    return "League{" +
        "franchise_id='" + franchise_id + '\'' +
        ", url='" + url + '\'' +
        ", name='" + name + '\'' +
        ", franchise_name='" + franchise_name + '\'' +
        '}';
  }
}

Leagues.java

public class Leagues {
  public final League leagues;

  public Leagues(League leagues) {
    this.leagues = leagues;
  }

  @Override public String toString() {
    return "Leagues{" +
        "leagues=" + leagues +
        '}';
  }
}

log.txt

I/SearchModel$override: #searchLeagues. rawJson = {
                                                                             "version": "1.0",
                                                                             "leagues": {
                                                                               "league": {
                                                                                 "franchise_id": "0002",
                                                                                 "url": "http://www.espn.com/fanasty_football",
                                                                                 "name": "Fanstyle Dynasty",
                                                                                 "franchise_name": "The Lovable Losers"
                                                                               }
                                                                             },
                                                                             "encoding": "utf-8"
                                                                           }
I/SearchModel$override: #searchLeagues. league.franchise_name = null
W/System.err: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.xxxxxx.xxxx.Leagues.toString()' on a null object reference
W/System.err:     at com.xxxxxx.xxxx.SearchModel$override.searchLeagues(SearchModel.java:26)
W/System.err:     at com.xxxxxx.xxxx.SearchModel$override.access$dispatch(SearchModel.java)
W/System.err:     at com.xxxxxx.xxxx.SearchModel.searchLeagues(SearchModel.java:0)

my_leagues.json

{
  "version": "1.0",
  "leagues": {
    "league": {
      "franchise_id": "0002",
      "url": "http://www.espn.com/fanasty_football",
      "name": "Fanstyle Dynasty",
      "franchise_name": "The Lovable Losers"
    }
  },
  "encoding": "utf-8"
}

SearchModel.java

import com.squareup.moshi.JsonAdapter;
import com.squareup.moshi.Moshi;

public class SearchModel implements LeagueSearchMvp.Model {

  @Override public Leagues searchLeagues() {
    Leagues result = null;

    try {
      String rawJson = JsonAssetReader.getStringFromFile("my_leagues.json");
      Moshi moshi = new Moshi.Builder().build();
      JsonAdapter<Leagues> jsonAdapter = moshi.adapter(Leagues.class);
      
      Timber.i("#searchLeagues. rawJson = %s", rawJson); // correct JSON key-values confirmed
      result = jsonAdapter.fromJson(rawJson);
      Timber.i("#searchLeagues. result = %s", result.toString()); // logs JSON payload with 'null' values
    } catch (Exception e) {
      e.printStackTrace();
    }
    return result;
  }
}

Fixed!! The leagues property in Leagues.java should've been of type Map<String, League>.