atualizar gradle

app/src/main/java/com/example/vdcscore/models/Club.java

@@ -3,9 +3,9 @@ package com.example.vdcscore.models;
 import com.google.firebase.database.PropertyName;
 import java.util.ArrayList;
 import java.io.Serializable;
+import java.util.HashMap;
 import java.util.List;
 
-
 public class Club implements Serializable {
     @PropertyName("id")
     private int id;
@@ -29,11 +29,11 @@ public class Club implements Serializable {
     private String president;
 
     @PropertyName("jogadores")
-    private ArrayList<Player> players;
+    private HashMap<String, Player> players;
 
     public Club() {
         // Default constructor for Firebase
-        players = new ArrayList<>();
+        players = new HashMap<>();
     }
 
     public Club(int id, String name, String imageUrl, String stadium, int foundationYear, String address,
@@ -45,7 +45,7 @@ public class Club implements Serializable {
         this.foundationYear = foundationYear;
         this.address = address;
         this.president = president;
-        this.players = new ArrayList<>();
+        this.players = new HashMap<>();
     }
 
     @PropertyName("id")
@@ -119,18 +119,18 @@ public class Club implements Serializable {
     }
 
     @PropertyName("jogadores")
-    public ArrayList<Player> getPlayersMap() {
+    public HashMap<String, Player> getPlayersMap() {
         return players;
     }
 
     @PropertyName("jogadores")
-    public void setPlayersMap(ArrayList<Player> players) {
+    public void setPlayersMap(HashMap<String, Player> players) {
         this.players = players;
     }
 
     public List<Player> getPlayersList() {
         if (players == null)
             return new ArrayList<>();
-        return new ArrayList<>(players);
+        return new ArrayList<>(players.values());
     }
 }

app/src/main/java/com/example/vdcscore/models/Player.java

@@ -1,8 +1,9 @@
 package com.example.vdcscore.models;
 
+import java.io.Serializable;
 import com.google.firebase.database.PropertyName;
 
-public class Player {
+public class Player implements Serializable {
     @PropertyName("id")
     private int id;