linked the android part to the code with basic graphics

app/build.gradle

@@ -23,8 +23,8 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
+        sourceCompatibility JavaVersion.VERSION_11
+        targetCompatibility JavaVersion.VERSION_11
     }
 }
 

app/google-services.json

@@ -1,6 +1,7 @@
 {
   "project_info": {
     "project_number": "786174912789",
+    "firebase_url": "https://chess-firebase-711c4-default-rtdb.europe-west1.firebasedatabase.app",
     "project_id": "chess-firebase-711c4",
     "storage_bucket": "chess-firebase-711c4.appspot.com"
   },

app/src/main/AndroidManifest.xml

@@ -2,7 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     package="com.example.chessfirebase">
-
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
@@ -12,7 +13,7 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.ChessFirebase"
-        tools:targetApi="31">
+        tools:targetApi="29">
         <activity
             android:name=".GameAvtivity"
             android:exported="false" />

app/src/main/java/com/example/chessfirebase/GameAvtivity.java

@@ -1,14 +1,83 @@
 package com.example.chessfirebase;
 
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
 
+import android.Manifest;
+import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.os.Bundle;
+import android.os.StrictMode;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.View;
+import android.widget.Button;
+import android.widget.FrameLayout;
 
-public class GameAvtivity extends AppCompatActivity {
+import com.example.chessfirebase.chessClasses.BoardCell;
+import com.example.chessfirebase.chessClasses.Piece;
+import com.google.firebase.auth.FirebaseAuth;
+import com.google.firebase.database.DatabaseReference;
+import com.google.firebase.database.FirebaseDatabase;
 
+public class GameAvtivity extends AppCompatActivity {
+    private static final int REQUEST_READ_PHONE_STATE = 1;
+    String roomName;
+    private FirebaseAuth mAuth;
+    private FirebaseDatabase database;
+    private boolean firebaseConn = false;
+    private DatabaseReference player;
+    FrameLayout frmview;
+    customGameView cgv;
+    socketPlayer p;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_game_avtivity);
+        StrictMode.ThreadPolicy gfgPolicy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
+        StrictMode.setThreadPolicy(gfgPolicy);
+        Intent i=getIntent();
+        mAuth=FirebaseAuth.getInstance();
+        frmview = findViewById(R.id.cgv);
+
+            cgv = new customGameView(GameAvtivity.this, frmview.getWidth(), frmview.getHeight());
+            frmview.addView(cgv);
+            Piece.size=1080.0f/8.0f;
+            BoardCell.size=Piece.size;
+        if(i.getBooleanExtra("FireBase",false)) {
+            firebaseConn = true;
+            roomName = i.getExtras().getString("roomName");
+            //create a firebasePlayer
+        }else{
+            p=new socketPlayer();
+            Thread th=new Thread(p);
+            th.start();
+
+            try {
+                Thread.sleep(250);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+            cgv.start(p.getBoard());
+            cgv.setOnTouchListener(new View.OnTouchListener() {
+                @Override
+                public boolean onTouch(View v, MotionEvent event) {
+                    p.getBoard().psuedoClickListener(event.getX(),event.getY());
+                    return false;
+                }
+            });
+        }
+
+
+    }
+    @Override
+    public void onWindowFocusChanged(boolean hasFocus) {
+        super.onWindowFocusChanged(hasFocus);
+        if ( cgv == null && hasFocus) {
+            cgv = new customGameView(GameAvtivity.this, frmview.getWidth(), frmview.getHeight());
+            frmview.addView(cgv);
+            cgv.start(p.getBoard());
+        }
     }
 }

app/src/main/java/com/example/chessfirebase/MainActivity.java

@@ -10,8 +10,10 @@
 import android.preference.PreferenceManager;
 import android.util.Log;
 import android.view.View;
+import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import com.google.firebase.auth.FirebaseAuth;
 import com.google.firebase.database.DataSnapshot;
@@ -31,7 +33,7 @@ public class MainActivity extends AppCompatActivity {
     private TextView tvName;
     private TextView tvElo;
     private FirebaseAuth mAuth;
-    private Button btRooms;
+    private Button btRooms,btQPair;
     private FirebaseDatabase database;
     private DatabaseReference player;
     @Override
@@ -43,23 +45,32 @@ protected void onCreate(Bundle savedInstanceState) {//TODO: add all the buttons
         tvName=findViewById(R.id.tvName);
         tvElo=findViewById(R.id.tvElo);
         btRooms=findViewById(R.id.btBrowseRooms);
+        btQPair=findViewById(R.id.btQuickPair);
         String name=FirebaseAuth.getInstance().getCurrentUser().getDisplayName();
         tvName.setText(name);
         tvElo.setText(sharedPreferences.getInt("Elo",800)+"");
         mAuth = FirebaseAuth.getInstance();
         database=FirebaseDatabase.getInstance();
-        player= database.getReference("players/"+name);
-        player.setValue(name+":"+sharedPreferences.getInt("Elo",800));//set the value by default to the name and rating so that we read
+        player= database.getReference("players/"+mAuth.getUid()+":"+name);
+        player.setValue(sharedPreferences.getInt("Elo",800));//set the value by default to the name and rating so that we read
         //it at the start and know what to display
-        btRooms.setOnClickListener(new View.OnClickListener() {
+        btRooms.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
+                btRooms.setEnabled(false);
                 startActivity(new Intent(MainActivity.this,RoomBrowse.class));
-                readFromDB();
                 MainActivity.this.finish();
             }
         });
-        //readFromDB();
+        btQPair.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent u=new Intent(MainActivity.this,GameAvtivity.class);
+                u.putExtra("Firebase",false);
+                startActivity(u);
+                MainActivity.this.finish();
+            }
+        });
     }
     private String readFromFile(Context context, String fileName) {
 
@@ -107,11 +118,12 @@ public void signOut(View v){
         this.finish();
     }
 
-    public void readFromDB(){
+    public void checkForFailure(){
         player.addValueEventListener(new ValueEventListener() {
             @Override
-            public void onDataChange(@NonNull DataSnapshot snapshot) {//occurs when another player joins the room
+            public void onDataChange(@NonNull DataSnapshot snapshot) {
                 //start an activity to roomBrowse
+
                 startActivity(new Intent(MainActivity.this,RoomBrowse.class));
                 MainActivity.this.finish();
             }
@@ -120,6 +132,8 @@ public void onDataChange(@NonNull DataSnapshot snapshot) {//occurs when another
             public void onCancelled(@NonNull DatabaseError error) {
                 //error
                 //TODO: try and handle the error (think about how to handle)
+                btRooms.setEnabled(true);
+                Toast.makeText(MainActivity.this,"Error creating player",Toast.LENGTH_LONG).show();
             }
         });
     }

app/src/main/java/com/example/chessfirebase/RoomBrowse.java

@@ -1,19 +1,29 @@
 package com.example.chessfirebase;
 
+import androidx.annotation.NonNull;
 import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 
 import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.SharedPreferences;
 import android.os.Bundle;
+import android.preference.PreferenceManager;
 import android.text.InputType;
 import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.ListView;
+import android.widget.Toast;
 
 import com.google.firebase.auth.FirebaseAuth;
+import com.google.firebase.database.DataSnapshot;
+import com.google.firebase.database.DatabaseError;
 import com.google.firebase.database.DatabaseReference;
 import com.google.firebase.database.FirebaseDatabase;
+import com.google.firebase.database.ValueEventListener;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -28,6 +38,7 @@ public class RoomBrowse extends AppCompatActivity {
 
     FirebaseDatabase db;
     DatabaseReference roomRef;
+    DatabaseReference player;
     FirebaseAuth mAuth;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -36,14 +47,13 @@ protected void onCreate(Bundle savedInstanceState) {
 
         mAuth=FirebaseAuth.getInstance();
         db=FirebaseDatabase.getInstance();
-
+        player=db.getReference(mAuth.getUid());
         name=mAuth.getCurrentUser().getDisplayName();
-
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
         lv=findViewById(R.id.lvRoomView);
         btCreateRoom=findViewById(R.id.btCreateRoom);
 
         roomList=new ArrayList<>();
-
         btCreateRoom.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -56,17 +66,87 @@ public void onClick(View v) {
                     @Override
                     public void onClick(DialogInterface dialog, int which) {
                         roomName=et.getText().toString();
+                        btCreateRoom.setEnabled(false);
                     }
                 });
                 bldr.setNegativeButton("Cancel" ,new DialogInterface.OnClickListener(){
                     @Override
                     public void onClick(DialogInterface dialog, int which) {
                         dialog.cancel();
+                        btCreateRoom.setEnabled(true);
                     }
                 });
                 bldr.show();
                 roomRef=db.getReference("rooms/"+roomName+"/white");
+                readFromDB();
+                roomRef.setValue(mAuth.getCurrentUser().getDisplayName()+":"+sharedPreferences.getInt("Elo",-100));
+            }
+        });
+        lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                roomName=roomList.get(position);
+                roomRef=db.getReference("rooms/"+roomName+"/black");
+                readFromDB();
+                roomRef.setValue(mAuth.getCurrentUser().getDisplayName()+":"+sharedPreferences.getInt("Elo",-100));
+                //possible to add random color pick for the room creation
+                /*roomRef.addListenerForSingleValueEvent(new ValueEventListener() {
+                    @Override
+                    public void onDataChange(@NonNull DataSnapshot snapshot) {
+                        if(snapshot.hasChild("/white")){
+                            roomRef=db.getReference("rooms/"+roomName+"/black");
+                        }
+
+                    }
+
+                    @Override
+                    public void onCancelled(@NonNull DatabaseError error) {
+
+                    }
+                });*/
             }
         });
+        updateRoomList();
     }
+
+
+    public void readFromDB(){//constant;y read from db to update the list
+        roomRef.addValueEventListener(new ValueEventListener() {
+            @Override
+            public void onDataChange(@NonNull DataSnapshot snapshot) {//occurs when another player joins the room
+                //
+                //start an activity to roomBrowse
+                startActivity(new Intent(getApplicationContext(),GameAvtivity.class).putExtra("roomName",roomName));
+            }
+
+            @Override
+            public void onCancelled(@NonNull DatabaseError error) {
+                //error
+                //TODO: try and handle the error (think about how to handle)
+                Toast.makeText(getApplicationContext(),"error",Toast.LENGTH_LONG).show();
+                btCreateRoom.setEnabled(true);
+            }
+        });
+    }
+    public void updateRoomList(){
+        roomRef=db.getReference("rooms");
+        roomRef.addValueEventListener(new ValueEventListener() {
+            @Override
+            public void onDataChange(@NonNull DataSnapshot snapshot) {
+                roomList.clear();
+                Iterable<DataSnapshot> it=snapshot.getChildren();
+                for(DataSnapshot sn:it){
+                    roomList.add(sn.getKey());
+                    ArrayAdapter<String> adapter=new ArrayAdapter<>(RoomBrowse.this, android.R.layout.simple_list_item_1);
+                    lv.setAdapter(adapter);
+                }
+            }
+
+            @Override
+            public void onCancelled(@NonNull DatabaseError error) {
+
+            }
+        });
+    }
+
 }