diff --git a/app/src/main/java/com/a1/nextlocation/MainActivity.java b/app/src/main/java/com/a1/nextlocation/MainActivity.java
index 9ba6645..5c52fcf 100644
--- a/app/src/main/java/com/a1/nextlocation/MainActivity.java
+++ b/app/src/main/java/com/a1/nextlocation/MainActivity.java
@@ -1,14 +1,10 @@
 package com.a1.nextlocation;
 
-import androidx.annotation.NonNull;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.fragment.app.Fragment;
-import androidx.fragment.app.FragmentTransaction;
 
 import android.os.Bundle;
-import android.view.MenuItem;
 
-import com.a1.nextlocation.R;
 import com.a1.nextlocation.fragments.HomeFragment;
 import com.a1.nextlocation.fragments.RouteFragment;
 import com.a1.nextlocation.fragments.SettingsFragment;
@@ -28,7 +24,7 @@ public class MainActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        BottomNavigationView bottomNav = findViewById(R.id.navbar);
+        BottomNavigationView bottomNav = findViewById(R.id.navigation_bar);
         bottomNav.setOnNavigationItemSelectedListener(navListener);
 
         LocationListManager.INSTANCE.setContext(this);
diff --git a/app/src/main/java/com/a1/nextlocation/fragments/CouponFragment.java b/app/src/main/java/com/a1/nextlocation/fragments/CouponFragment.java
index 1faea7f..984e38c 100644
--- a/app/src/main/java/com/a1/nextlocation/fragments/CouponFragment.java
+++ b/app/src/main/java/com/a1/nextlocation/fragments/CouponFragment.java
@@ -1,7 +1,6 @@
 package com.a1.nextlocation.fragments;
 
 import android.app.AlertDialog;
-import android.content.DialogInterface;
 import android.os.Bundle;
 
 import androidx.fragment.app.Fragment;
@@ -38,11 +37,11 @@ public class CouponFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.fragment_coupon, container, false);
 
-        this.couponRecyclerView = view.findViewById(R.id.couponRecyclerView);
+        this.couponRecyclerView = view.findViewById(R.id.coupon_recyclerview);
         this.couponRecyclerView.setHasFixedSize(true);
         this.layoutManager = new LinearLayoutManager(this.getContext());
 
-        this.imageButton = view.findViewById(R.id.couponBackButton);
+        this.imageButton = view.findViewById(R.id.coupon_back_button);
         this.imageButton.setOnClickListener(v -> {
             StatisticFragment statisticFragment = new StatisticFragment();
             ((FragmentActivity) view.getContext()).getSupportFragmentManager().beginTransaction().replace(R.id.fragment_layout, statisticFragment).addToBackStack(null).commit();
diff --git a/app/src/main/java/com/a1/nextlocation/fragments/HomeFragment.java b/app/src/main/java/com/a1/nextlocation/fragments/HomeFragment.java
index ffcbc7c..bbc3a60 100644
--- a/app/src/main/java/com/a1/nextlocation/fragments/HomeFragment.java
+++ b/app/src/main/java/com/a1/nextlocation/fragments/HomeFragment.java
@@ -5,7 +5,6 @@ package com.a1.nextlocation.fragments;
 import android.Manifest;
 import android.content.Context;
 import android.content.pm.PackageManager;
-import android.content.res.Resources;
 import android.location.Location;
 import android.location.LocationManager;
 import android.os.Bundle;
@@ -23,17 +22,13 @@ import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentActivity;
 
 import com.a1.nextlocation.R;
-import com.a1.nextlocation.data.Route;
-import com.a1.nextlocation.recyclerview.CouponListManager;
 import com.a1.nextlocation.recyclerview.CustomOverlay;
 import com.a1.nextlocation.recyclerview.LocationListManager;
-import com.a1.nextlocation.recyclerview.RouteListManager;
 
 import org.osmdroid.api.IMapController;
 import org.osmdroid.config.Configuration;
 import org.osmdroid.util.GeoPoint;
 import org.osmdroid.views.MapView;
-import org.osmdroid.views.overlay.Overlay;
 import org.osmdroid.views.overlay.OverlayItem;
 import org.osmdroid.views.overlay.compass.CompassOverlay;
 import org.osmdroid.views.overlay.compass.InternalCompassOrientationProvider;
@@ -87,7 +82,7 @@ public class HomeFragment extends Fragment {
         Configuration.getInstance().setUserAgentValue(userAgent);
 
         // create the map view
-        mapView = view.findViewById(R.id.mapView);
+        mapView = view.findViewById(R.id.map_view);
         mapView.setDestroyMode(false);
         mapView.setTag("mapView");
         mapView.setMultiTouchControls(true);
diff --git a/app/src/main/java/com/a1/nextlocation/fragments/LocationFragment.java b/app/src/main/java/com/a1/nextlocation/fragments/LocationFragment.java
index 237622d..03afb8e 100644
--- a/app/src/main/java/com/a1/nextlocation/fragments/LocationFragment.java
+++ b/app/src/main/java/com/a1/nextlocation/fragments/LocationFragment.java
@@ -14,11 +14,9 @@ import android.widget.ImageButton;
 
 import com.a1.nextlocation.R;
 import com.a1.nextlocation.data.Location;
-import com.a1.nextlocation.recyclerview.CouponAdapter;
 import com.a1.nextlocation.recyclerview.LocationAdapter;
 import com.a1.nextlocation.recyclerview.LocationListManager;
 
-import java.util.ArrayList;
 import java.util.List;
 
 public class LocationFragment extends Fragment {
@@ -38,11 +36,11 @@ public class LocationFragment extends Fragment {
 
         View view = inflater.inflate(R.layout.fragment_location, container, false);
 
-        this.locationRecyclerView = view.findViewById(R.id.locationRecyclerView);
+        this.locationRecyclerView = view.findViewById(R.id.location_recyclerview);
         this.locationRecyclerView.setHasFixedSize(true);
         this.layoutManager = new LinearLayoutManager(this.getContext());
 
-        this.imageButton = view.findViewById(R.id.locationBackButton);
+        this.imageButton = view.findViewById(R.id.location_back_button);
         this.imageButton.setOnClickListener(v -> {
             HomeFragment homeFragment = new HomeFragment();
             ((FragmentActivity) view.getContext()).getSupportFragmentManager().beginTransaction().replace(R.id.fragment_layout, homeFragment).addToBackStack(null).commit();
diff --git a/app/src/main/java/com/a1/nextlocation/fragments/RouteFragment.java b/app/src/main/java/com/a1/nextlocation/fragments/RouteFragment.java
index 9ac07c3..cef1194 100644
--- a/app/src/main/java/com/a1/nextlocation/fragments/RouteFragment.java
+++ b/app/src/main/java/com/a1/nextlocation/fragments/RouteFragment.java
@@ -16,7 +16,6 @@ import com.a1.nextlocation.data.Route;
 import com.a1.nextlocation.recyclerview.RouteAdapter;
 import com.a1.nextlocation.recyclerview.RouteListManager;
 
-import java.util.ArrayList;
 import java.util.List;
 
 public class RouteFragment extends Fragment {
@@ -36,7 +35,7 @@ public class RouteFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.fragment_route, container, false);
 
-        this.routeRecyclerView = view.findViewById(R.id.routeRecyclerView);
+        this.routeRecyclerView = view.findViewById(R.id.route_recyclerview);
         this.routeRecyclerView.setHasFixedSize(true);
         this.layoutManager = new LinearLayoutManager(this.getContext());
 
diff --git a/app/src/main/res/layout-land/fragment_route_detail.xml b/app/src/main/res/layout-land/fragment_route_detail.xml
index b5863ad..ebd2b7e 100644
--- a/app/src/main/res/layout-land/fragment_route_detail.xml
+++ b/app/src/main/res/layout-land/fragment_route_detail.xml
@@ -13,14 +13,14 @@
         android:layout_height="wrap_content"
         android:layout_margin="10dp"
         android:background="@drawable/ic_back_button_24"
-        app:layout_constraintBottom_toBottomOf="@+id/routeTitle"
+        app:layout_constraintBottom_toBottomOf="@+id/route_title"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="@+id/routeTitle"
-        app:layout_constraintEnd_toStartOf="@id/routeTitle"
+        app:layout_constraintTop_toTopOf="@+id/route_title"
+        app:layout_constraintEnd_toStartOf="@id/route_title"
         />
 
     <TextView
-        android:id="@+id/routeTitle"
+        android:id="@+id/route_title"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginEnd="250dp"
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 97123a3..2e4a785 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -10,15 +10,15 @@
         android:id="@+id/fragment_layout"
         android:layout_width="match_parent"
         android:layout_height="0dp"
-        app:layout_constraintTop_toBottomOf="@+id/topBar"
-        app:layout_constraintBottom_toTopOf="@id/navbar"
+        app:layout_constraintTop_toBottomOf="@+id/top_bar"
+        app:layout_constraintBottom_toTopOf="@id/navigation_bar"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         />
 
     <com.google.android.material.bottomnavigation.BottomNavigationView
         android:showAsAction="always|withText"
-        android:id="@+id/navbar"
+        android:id="@+id/navigation_bar"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:background="@color/white"
@@ -31,7 +31,7 @@
         />
 
     <androidx.constraintlayout.widget.ConstraintLayout
-        android:id="@+id/topBar"
+        android:id="@+id/top_bar"
         android:layout_width="match_parent"
         android:layout_height="50dp"
         app:layout_constraintTop_toTopOf="parent"
@@ -41,27 +41,27 @@
         android:background="@color/primaryColour"/>
 
         <ImageButton
-            android:id="@+id/infoButton"
+            android:id="@+id/info_button"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:src="@drawable/ic_baseline_info_24"
             android:backgroundTint="@color/primaryColour"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="@id/topBar"
-            app:layout_constraintBottom_toBottomOf="@id/topBar"
+            app:layout_constraintTop_toTopOf="@id/top_bar"
+            app:layout_constraintBottom_toBottomOf="@id/top_bar"
             android:tint="@color/secondaryColour"
             />
 
     <TextView
+        android:id="@+id/text_view"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        app:layout_constraintStart_toEndOf="@id/infoButton"
-        app:layout_constraintTop_toTopOf="@id/topBar"
-        app:layout_constraintBottom_toBottomOf="@id/topBar"
         android:text="@string/app_name"
-        android:textSize="25dp"
         android:textColor="@color/secondaryColour"
-        />
+        android:textSize="25dp"
+        app:layout_constraintBottom_toBottomOf="@id/top_bar"
+        app:layout_constraintStart_toEndOf="@id/info_button"
+        app:layout_constraintTop_toTopOf="@id/top_bar" />
 
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/coupon_item.xml b/app/src/main/res/layout/coupon_item.xml
index 49e3b93..b1b303f 100644
--- a/app/src/main/res/layout/coupon_item.xml
+++ b/app/src/main/res/layout/coupon_item.xml
@@ -5,7 +5,7 @@
     android:layout_height="wrap_content">
 
     <androidx.constraintlayout.widget.ConstraintLayout
-        android:id="@+id/Box1"
+        android:id="@+id/name_box"
         android:layout_width="match_parent"
         android:layout_height="70dp"
         android:layout_marginHorizontal="20dp"
diff --git a/app/src/main/res/layout/fragment_coupon.xml b/app/src/main/res/layout/fragment_coupon.xml
index 20baf40..b6e8b99 100644
--- a/app/src/main/res/layout/fragment_coupon.xml
+++ b/app/src/main/res/layout/fragment_coupon.xml
@@ -15,11 +15,11 @@
         android:layout_marginTop="20dp"
         android:text="Statistics"
         android:textSize="20sp"
-        app:layout_constraintStart_toEndOf="@id/couponBackButton"
+        app:layout_constraintStart_toEndOf="@id/coupon_back_button"
         app:layout_constraintTop_toTopOf="parent" />
 
     <ImageButton
-        android:id="@+id/couponBackButton"
+        android:id="@+id/coupon_back_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="10dp"
@@ -33,9 +33,9 @@
     <androidx.recyclerview.widget.RecyclerView
         android:layout_width="0dp"
         android:layout_height="0dp"
-        android:id="@+id/couponRecyclerView"
+        android:id="@+id/coupon_recyclerview"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/couponBackButton" />
+        app:layout_constraintTop_toBottomOf="@+id/coupon_back_button" />
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_home.xml b/app/src/main/res/layout/fragment_home.xml
index 04010ac..5a55efa 100644
--- a/app/src/main/res/layout/fragment_home.xml
+++ b/app/src/main/res/layout/fragment_home.xml
@@ -7,7 +7,7 @@
     tools:context=".fragments.HomeFragment">
 
     <org.osmdroid.views.MapView
-        android:id="@+id/mapView"
+        android:id="@+id/map_view"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
diff --git a/app/src/main/res/layout/fragment_location.xml b/app/src/main/res/layout/fragment_location.xml
index 7277118..deed47a 100644
--- a/app/src/main/res/layout/fragment_location.xml
+++ b/app/src/main/res/layout/fragment_location.xml
@@ -15,11 +15,11 @@
         android:layout_marginTop="20dp"
         android:text="Locations"
         android:textSize="20sp"
-        app:layout_constraintStart_toEndOf="@id/locationBackButton"
+        app:layout_constraintStart_toEndOf="@id/location_back_button"
         app:layout_constraintTop_toTopOf="parent" />
 
     <ImageButton
-        android:id="@+id/locationBackButton"
+        android:id="@+id/location_back_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="10dp"
@@ -31,7 +31,7 @@
         app:layout_constraintTop_toTopOf="parent" />
 
     <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/locationRecyclerView"
+        android:id="@+id/location_recyclerview"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:layout_marginTop="60dp"
diff --git a/app/src/main/res/layout/fragment_route.xml b/app/src/main/res/layout/fragment_route.xml
index 23b76a0..1c2a5d0 100644
--- a/app/src/main/res/layout/fragment_route.xml
+++ b/app/src/main/res/layout/fragment_route.xml
@@ -8,7 +8,7 @@
     tools:context=".fragments.RouteFragment">
 
     <ImageButton
-        android:id="@+id/routeBackButton"
+        android:id="@+id/route_back_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_margin="10dp"
@@ -18,23 +18,23 @@
         app:layout_constraintTop_toTopOf="parent" />
 
     <TextView
-        android:id="@+id/routeTitle"
+        android:id="@+id/route_title"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_margin="9dp"
         android:text="titel"
         android:textSize="20sp"
-        app:layout_constraintStart_toEndOf="@id/routeBackButton"
+        app:layout_constraintStart_toEndOf="@id/route_back_button"
         app:layout_constraintTop_toTopOf="parent" />
 
     <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/routeRecyclerView"
+        android:id="@+id/route_recyclerview"
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:background="@color/primaryColour"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/routeBackButton" />
+        app:layout_constraintTop_toBottomOf="@+id/route_back_button" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_route_detail.xml b/app/src/main/res/layout/fragment_route_detail.xml
index 9eaa3c0..8b39d88 100644
--- a/app/src/main/res/layout/fragment_route_detail.xml
+++ b/app/src/main/res/layout/fragment_route_detail.xml
@@ -13,13 +13,13 @@
         android:layout_height="wrap_content"
         android:layout_marginEnd="100dp"
         android:background="@drawable/ic_back_button_24"
-        app:layout_constraintBottom_toBottomOf="@id/routeTitle"
-        app:layout_constraintEnd_toStartOf="@id/routeTitle"
+        app:layout_constraintBottom_toBottomOf="@id/route_title"
+        app:layout_constraintEnd_toStartOf="@id/route_title"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="@id/routeTitle" />
+        app:layout_constraintTop_toTopOf="@id/route_title" />
 
     <TextView
-        android:id="@+id/routeTitle"
+        android:id="@+id/route_title"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="titel"
diff --git a/app/src/main/res/layout/fragment_settings.xml b/app/src/main/res/layout/fragment_settings.xml
index 6d629eb..c0cb215 100644
--- a/app/src/main/res/layout/fragment_settings.xml
+++ b/app/src/main/res/layout/fragment_settings.xml
@@ -30,7 +30,7 @@
         app:layout_constraintTop_toTopOf="parent" />
 
     <androidx.constraintlayout.widget.ConstraintLayout
-        android:id="@+id/Box1"
+        android:id="@+id/name_box"
         android:layout_width="match_parent"
         android:layout_height="70dp"
         app:layout_constraintBottom_toTopOf="@id/Box2"
@@ -86,7 +86,7 @@
         app:layout_constraintBottom_toTopOf="@id/Box3"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/Box1"
+        app:layout_constraintTop_toBottomOf="@id/name_box"
 
         >
 
diff --git a/app/src/main/res/layout/fragment_statistic.xml b/app/src/main/res/layout/fragment_statistic.xml
index 7498fa9..5abfdc0 100644
--- a/app/src/main/res/layout/fragment_statistic.xml
+++ b/app/src/main/res/layout/fragment_statistic.xml
@@ -20,7 +20,7 @@
         app:layout_constraintTop_toTopOf="parent" />
 
     <androidx.constraintlayout.widget.ConstraintLayout
-        android:id="@+id/Box1"
+        android:id="@+id/name_box"
         android:layout_width="match_parent"
         android:layout_height="70dp"
         app:layout_constraintBottom_toTopOf="@id/Box2"
@@ -77,7 +77,7 @@
         app:layout_constraintBottom_toTopOf="@id/Box3"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/Box1"
+        app:layout_constraintTop_toBottomOf="@id/name_box"
 
         >
 
diff --git a/app/src/main/res/layout/location_item.xml b/app/src/main/res/layout/location_item.xml
index d5cee0b..db57909 100644
--- a/app/src/main/res/layout/location_item.xml
+++ b/app/src/main/res/layout/location_item.xml
@@ -21,6 +21,6 @@
         android:gravity="center"
         android:text="location"
         android:textSize="20dp"
-        app:layout_constraintStart_toEndOf="@+id/routeImage" />
+        app:layout_constraintStart_toEndOf="@+id/route_Image" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/route_item.xml b/app/src/main/res/layout/route_item.xml
index c6f675f..d9091d8 100644
--- a/app/src/main/res/layout/route_item.xml
+++ b/app/src/main/res/layout/route_item.xml
@@ -9,7 +9,7 @@
     <ImageView
         android:layout_width="50dp"
         android:layout_height="50dp"
-        android:id="@+id/routeImage"
+        android:id="@+id/route_Image"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintBottom_toBottomOf="parent"
         />
@@ -21,7 +21,7 @@
         android:text="test text"
         android:gravity="center"
         android:textSize="20dp"
-        app:layout_constraintStart_toEndOf="@+id/routeImage"
+        app:layout_constraintStart_toEndOf="@+id/route_Image"
         />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file