diff --git a/app/src/main/java/com/example/sensortestingapp/FirstFragment.kt b/app/src/main/java/com/example/sensortestingapp/FirstFragment.kt
deleted file mode 100644
index 942dbd4..0000000
--- a/app/src/main/java/com/example/sensortestingapp/FirstFragment.kt
+++ /dev/null
@@ -1,44 +0,0 @@
-package com.example.sensortestingapp
-
-import android.os.Bundle
-import androidx.fragment.app.Fragment
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import androidx.navigation.fragment.findNavController
-import com.example.sensortestingapp.databinding.FragmentFirstBinding
-
-/**
- * A simple [Fragment] subclass as the default destination in the navigation.
- */
-class FirstFragment : Fragment() {
-
-    private var _binding: FragmentFirstBinding? = null
-
-    // This property is only valid between onCreateView and
-    // onDestroyView.
-    private val binding get() = _binding!!
-
-    override fun onCreateView(
-            inflater: LayoutInflater, container: ViewGroup?,
-            savedInstanceState: Bundle?
-    ): View? {
-
-        _binding = FragmentFirstBinding.inflate(inflater, container, false)
-        return binding.root
-
-    }
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-
-        binding.buttonFirst.setOnClickListener {
-            findNavController().navigate(R.id.action_FirstFragment_to_SecondFragment)
-        }
-    }
-
-    override fun onDestroyView() {
-        super.onDestroyView()
-        _binding = null
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/sensortestingapp/MainActivity.kt b/app/src/main/java/com/example/sensortestingapp/MainActivity.kt
index 91c60a3..6c24755 100644
--- a/app/src/main/java/com/example/sensortestingapp/MainActivity.kt
+++ b/app/src/main/java/com/example/sensortestingapp/MainActivity.kt
@@ -22,10 +22,6 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
 import androidx.core.view.WindowCompat
-import androidx.navigation.findNavController
-import androidx.navigation.ui.AppBarConfiguration
-import androidx.navigation.ui.navigateUp
-import androidx.navigation.ui.setupActionBarWithNavController
 import com.example.sensortestingapp.databinding.ActivityMainBinding
 import java.util.stream.Collectors
 import java.util.stream.Collectors.toList
@@ -51,7 +47,6 @@ fun Context.hasRequiredRuntimePermissions(): Boolean {
 @SuppressLint("MissingPermission")
 class MainActivity : AppCompatActivity() {
 
-    private lateinit var appBarConfiguration: AppBarConfiguration
     private lateinit var binding: ActivityMainBinding
 
     private val scanSettings = ScanSettings.Builder()
@@ -86,9 +81,6 @@ class MainActivity : AppCompatActivity() {
 
         setSupportActionBar(binding.toolbar)
 
-        val navController = findNavController(R.id.nav_host_fragment_content_main)
-        appBarConfiguration = AppBarConfiguration(navController.graph)
-        setupActionBarWithNavController(navController, appBarConfiguration)
 
         binding.fab.setOnClickListener { view ->
             if (!isScanning) {
@@ -118,11 +110,6 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
-    override fun onSupportNavigateUp(): Boolean {
-        val navController = findNavController(R.id.nav_host_fragment_content_main)
-        return navController.navigateUp(appBarConfiguration)
-                || super.onSupportNavigateUp()
-    }
 
     override fun onResume() {
         super.onResume()
diff --git a/app/src/main/java/com/example/sensortestingapp/SecondFragment.kt b/app/src/main/java/com/example/sensortestingapp/SecondFragment.kt
deleted file mode 100644
index ec89d0f..0000000
--- a/app/src/main/java/com/example/sensortestingapp/SecondFragment.kt
+++ /dev/null
@@ -1,44 +0,0 @@
-package com.example.sensortestingapp
-
-import android.os.Bundle
-import androidx.fragment.app.Fragment
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import androidx.navigation.fragment.findNavController
-import com.example.sensortestingapp.databinding.FragmentSecondBinding
-
-/**
- * A simple [Fragment] subclass as the second destination in the navigation.
- */
-class SecondFragment : Fragment() {
-
-    private var _binding: FragmentSecondBinding? = null
-
-    // This property is only valid between onCreateView and
-    // onDestroyView.
-    private val binding get() = _binding!!
-
-    override fun onCreateView(
-            inflater: LayoutInflater, container: ViewGroup?,
-            savedInstanceState: Bundle?
-    ): View? {
-
-        _binding = FragmentSecondBinding.inflate(inflater, container, false)
-        return binding.root
-
-    }
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-
-        binding.buttonSecond.setOnClickListener {
-            findNavController().navigate(R.id.action_SecondFragment_to_FirstFragment)
-        }
-    }
-
-    override fun onDestroyView() {
-        super.onDestroyView()
-        _binding = null
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 1a76c83..4a9d98d 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -19,8 +19,6 @@
 
     </com.google.android.material.appbar.AppBarLayout>
 
-    <include layout="@layout/content_main" />
-
     <com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
         android:id="@+id/fab"
         android:layout_width="wrap_content"
diff --git a/app/src/main/res/layout/content_main.xml b/app/src/main/res/layout/content_main.xml
deleted file mode 100644
index e416e1c..0000000
--- a/app/src/main/res/layout/content_main.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    app:layout_behavior="@string/appbar_scrolling_view_behavior">
-
-    <fragment
-        android:id="@+id/nav_host_fragment_content_main"
-        android:name="androidx.navigation.fragment.NavHostFragment"
-        android:layout_width="0dp"
-        android:layout_height="0dp"
-        app:defaultNavHost="true"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        app:navGraph="@navigation/nav_graph" />
-</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_first.xml b/app/src/main/res/layout/fragment_first.xml
deleted file mode 100644
index 44baecd..0000000
--- a/app/src/main/res/layout/fragment_first.xml
+++ /dev/null
@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context=".FirstFragment">
-
-    <androidx.constraintlayout.widget.ConstraintLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:padding="16dp">
-
-        <Button
-            android:id="@+id/button_first"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:text="@string/next"
-            app:layout_constraintBottom_toTopOf="@id/textview_first"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent" />
-
-        <TextView
-            android:id="@+id/textview_first"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginTop="16dp"
-            android:text="@string/lorem_ipsum"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/button_first" />
-    </androidx.constraintlayout.widget.ConstraintLayout>
-</androidx.core.widget.NestedScrollView>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_second.xml b/app/src/main/res/layout/fragment_second.xml
deleted file mode 100644
index d074310..0000000
--- a/app/src/main/res/layout/fragment_second.xml
+++ /dev/null
@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context=".SecondFragment">
-
-    <androidx.constraintlayout.widget.ConstraintLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:padding="16dp">
-
-        <Button
-            android:id="@+id/button_second"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:text="@string/previous"
-            app:layout_constraintBottom_toTopOf="@id/textview_second"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent" />
-
-        <TextView
-            android:id="@+id/textview_second"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginTop="16dp"
-            android:text="@string/lorem_ipsum"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/button_second" />
-    </androidx.constraintlayout.widget.ConstraintLayout>
-</androidx.core.widget.NestedScrollView>
\ No newline at end of file
diff --git a/app/src/main/res/navigation/nav_graph.xml b/app/src/main/res/navigation/nav_graph.xml
deleted file mode 100644
index 77b44d1..0000000
--- a/app/src/main/res/navigation/nav_graph.xml
+++ /dev/null
@@ -1,28 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<navigation xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/nav_graph"
-    app:startDestination="@id/FirstFragment">
-
-    <fragment
-        android:id="@+id/FirstFragment"
-        android:name="com.example.sensortestingapp.FirstFragment"
-        android:label="@string/first_fragment_label"
-        tools:layout="@layout/fragment_first">
-
-        <action
-            android:id="@+id/action_FirstFragment_to_SecondFragment"
-            app:destination="@id/SecondFragment" />
-    </fragment>
-    <fragment
-        android:id="@+id/SecondFragment"
-        android:name="com.example.sensortestingapp.SecondFragment"
-        android:label="@string/second_fragment_label"
-        tools:layout="@layout/fragment_second">
-
-        <action
-            android:id="@+id/action_SecondFragment_to_FirstFragment"
-            app:destination="@id/FirstFragment" />
-    </fragment>
-</navigation>
\ No newline at end of file