diff --git a/app/src/main/java/com/example/dcav2gui/MainActivity.java b/app/src/main/java/com/example/dcav2gui/MainActivity.java
index 80c04fe..48936a9 100644
--- a/app/src/main/java/com/example/dcav2gui/MainActivity.java
+++ b/app/src/main/java/com/example/dcav2gui/MainActivity.java
@@ -1,59 +1,117 @@
-package com.example.dcav2gui;
-
+package com.example.dcav2gui;//package com.example.dcav2gui;
+//
+//import android.os.Bundle;
+//import android.view.View;
+//import android.view.Menu;
+//
+//import com.google.android.material.snackbar.Snackbar;
+//import com.google.android.material.navigation.NavigationView;
+//
+//import androidx.navigation.NavController;
+//import androidx.navigation.Navigation;
+//import androidx.navigation.ui.AppBarConfiguration;
+//import androidx.navigation.ui.NavigationUI;
+//import androidx.drawerlayout.widget.DrawerLayout;
+//import androidx.appcompat.app.AppCompatActivity;
+//
+//import com.example.dcav2gui.databinding.ActivityMainBinding;
+//
+//public class MainActivity extends AppCompatActivity {
+//
+//    private AppBarConfiguration mAppBarConfiguration;
+//    private ActivityMainBinding binding;
+//
+//    @Override
+//    protected void onCreate(Bundle savedInstanceState) {
+//        super.onCreate(savedInstanceState);
+//
+//        binding = ActivityMainBinding.inflate(getLayoutInflater());
+//        setContentView(binding.getRoot());
+//
+//        setSupportActionBar(binding.appBarMain.toolbar);
+//        binding.appBarMain.fab.setOnClickListener(new View.OnClickListener() {
+//            @Override
+//            public void onClick(View view) {
+//                Snackbar.make(view, "General commands", Snackbar.LENGTH_LONG)
+//                        .setAction("Action", null)
+//                        .setAnchorView(R.id.fab).show();
+//            }
+//        });
+//
+//        DrawerLayout drawer = binding.drawerLayout;
+//        NavigationView navigationView = binding.navView;
+//        // Passing each menu ID as a set of Ids because each
+//        // menu should be considered as top level destinations.
+//        mAppBarConfiguration = new AppBarConfiguration.Builder(
+//                R.id.nav_home,
+//                R.id.nav_binance,
+//                R.id.nav_gateio,
+//                R.id.nav_kucoin,
+//                R.id.nav_okx
+//                )
+//                .setOpenableLayout(drawer)
+//                .build();
+//        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main);
+//        NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);
+//        NavigationUI.setupWithNavController(navigationView, navController);
+//    }
+//
+//    @Override
+//    public boolean onCreateOptionsMenu(Menu menu) {
+//        // Inflate the menu; this adds items to the action bar if it is present.
+//        getMenuInflater().inflate(R.menu.main, menu);
+//        return true;
+//    }
+//
+//    @Override
+//    public boolean onSupportNavigateUp() {
+//        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main);
+//        return NavigationUI.navigateUp(navController, mAppBarConfiguration)
+//                || super.onSupportNavigateUp();
+//    }
+//}
+// app/src/main/java/com/example/dcav2gui/MainActivity.java
 import android.os.Bundle;
-import android.view.View;
 import android.view.Menu;
+import android.view.MenuItem;
 
-import com.google.android.material.snackbar.Snackbar;
-import com.google.android.material.navigation.NavigationView;
-
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+import androidx.drawerlayout.widget.DrawerLayout;
 import androidx.navigation.NavController;
 import androidx.navigation.Navigation;
 import androidx.navigation.ui.AppBarConfiguration;
 import androidx.navigation.ui.NavigationUI;
-import androidx.drawerlayout.widget.DrawerLayout;
-import androidx.appcompat.app.AppCompatActivity;
 
+import com.example.dcav2gui.R;
 import com.example.dcav2gui.databinding.ActivityMainBinding;
+import com.google.android.material.navigation.NavigationView;
 
 public class MainActivity extends AppCompatActivity {
 
     private AppBarConfiguration mAppBarConfiguration;
-    private ActivityMainBinding binding;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
 
-        binding = ActivityMainBinding.inflate(getLayoutInflater());
-        setContentView(binding.getRoot());
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
 
-        setSupportActionBar(binding.appBarMain.toolbar);
-        binding.appBarMain.fab.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View view) {
-                Snackbar.make(view, "General commands", Snackbar.LENGTH_LONG)
-                        .setAction("Action", null)
-                        .setAnchorView(R.id.fab).show();
-            }
-        });
-
-        DrawerLayout drawer = binding.drawerLayout;
-        NavigationView navigationView = binding.navView;
-        // Passing each menu ID as a set of Ids because each
-        // menu should be considered as top level destinations.
+        DrawerLayout drawer = findViewById(R.id.drawer_layout);
+        //NavigationView navigationView = binding.navView;
+        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main);
         mAppBarConfiguration = new AppBarConfiguration.Builder(
                 R.id.nav_home,
                 R.id.nav_binance,
                 R.id.nav_gateio,
                 R.id.nav_kucoin,
-                R.id.nav_okx
-                )
+                R.id.nav_okx)
                 .setOpenableLayout(drawer)
                 .build();
-        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main);
         NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);
-        NavigationUI.setupWithNavController(navigationView, navController);
+        //NavigationUI.setupWithNavController(navigationView, navController);
     }
 
     @Override
@@ -63,6 +121,23 @@ public class MainActivity extends AppCompatActivity {
         return true;
     }
 
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        int id = item.getItemId();
+
+        if (id == R.id.action_settings) {
+            // Navigate to the SettingsFragment
+            NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main);
+            navController.navigate(R.id.nav_settings);
+            return true;
+        }
+
+        return super.onOptionsItemSelected(item);
+    }
+
     @Override
     public boolean onSupportNavigateUp() {
         NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main);
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 6c7dd7c..3615eaa 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -22,4 +22,5 @@
         android:fitsSystemWindows="true"
         app:headerLayout="@layout/nav_header_main"
         app:menu="@menu/activity_main_drawer" />
+
 </androidx.drawerlayout.widget.DrawerLayout>
\ No newline at end of file