HomeActivity.java

package com.example.hydrationapp;

import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;
import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.navigation.ui.AppBarConfiguration;
import androidx.navigation.ui.NavigationUI;

import com.example.hydrationapp.ui.home.TimeItem;
import com.google.android.material.appbar.MaterialToolbar;
import com.google.android.material.bottomnavigation.BottomNavigationView;

import java.util.ArrayList;

public class HomeActivity extends AppCompatActivity {

    public static ArrayList<TimeItem> timeItems= new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home);

        MaterialToolbar toolbar = findViewById(R.id.my_toolbar);
        setSupportActionBar(toolbar);

        BottomNavigationView navView = findViewById(R.id.nav_view);
        // Passing each menu ID as a set of Ids because each
        // menu should be considered as top level destinations.
        AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
                R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_settings)
                .build();
        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
        NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
        NavigationUI.setupWithNavController(navView, navController);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds yearItems to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_app_bar, menu);

        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();


        if (id == R.id.action_profile) {

            Toast.makeText(HomeActivity.this, "Profile", Toast.LENGTH_SHORT).show();
        }
        return super.onOptionsItemSelected(item);
    }

}