MobileDevelopment/AppMobile/app/src/main/java/com/example/appmobile/ProfileActivity.java

package com.example.appmobile;

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.FragmentTransaction;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.Toast;

public class ProfileActivity extends AppCompatActivity {

    private ImageButton btn_todo, btn_idea, btn_user;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_profile);

        NavigationFragment navBar = new NavigationFragment();
        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
        ft.replace(R.id.nav_bar_user, navBar);
        ft.commit();
    }
}