refactor: Introduce EdgeToEdgeHelper to centralize logic

A new `EdgeToEdgeHelper` class has been created to encapsulate the edge-to-edge display logic.

This helper is now used across all activities to replace direct calls to `WindowCompat.enableEdgeToEdge`, simplifying the implementation and improving maintainability. Additionally, `fitsSystemWindows="true"` has been added to `activity_main.xml` and `activity_help.xml` to ensure proper layout behavior with the new helper.

Author: Mihai-Cristian Condrea

app/src/main/java/com/d4rk/androidtutorials/java/data/model/AndroidVersion.java

@@ -6,5 +6,4 @@ public record AndroidVersion(
         String codeName,
         String codenameLiteral,
         String year
-) {
-}
+) { }

app/src/main/java/com/d4rk/androidtutorials/java/data/model/PromotedApp.java

@@ -3,5 +3,4 @@
 /**
  * Model representing a promoted application fetched from the remote API.
  */
-public record PromotedApp(String name, String packageName, String iconUrl) {
-}
+public record PromotedApp(String name, String packageName, String iconUrl) { }

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/CodeActivity.java

@@ -15,6 +15,7 @@
 import com.d4rk.androidtutorials.java.ui.screens.android.tabs.CodeFragment;
 import com.d4rk.androidtutorials.java.ui.screens.android.tabs.LayoutFragment;
 import com.d4rk.androidtutorials.java.ui.screens.android.tabs.NoCodeFragment;
+import com.d4rk.androidtutorials.java.utils.EdgeToEdgeHelper;
 import com.google.android.material.tabs.TabLayoutMediator;
 
 import dagger.hilt.android.AndroidEntryPoint;
@@ -29,7 +30,7 @@ protected void onCreate(Bundle savedInstanceState) {
 
         binding = ActivityTabLayoutBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-        WindowCompat.enableEdgeToEdge(getWindow());
+        EdgeToEdgeHelper.applyEdgeToEdge(getWindow(), binding.getRoot());
 
         CodeViewModel viewModel = new ViewModelProvider(this).get(CodeViewModel.class);
 

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/alerts/alertdialog/AlertDialogActivity.java

@@ -11,6 +11,7 @@
 import com.d4rk.androidtutorials.java.databinding.ActivityAlertDialogBinding;
 import com.d4rk.androidtutorials.java.ui.components.navigation.UpNavigationActivity;
 import com.d4rk.androidtutorials.java.ui.screens.android.CodeActivity;
+import com.d4rk.androidtutorials.java.utils.EdgeToEdgeHelper;
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 
 public class AlertDialogActivity extends UpNavigationActivity {
@@ -22,7 +23,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         binding = ActivityAlertDialogBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-        WindowCompat.enableEdgeToEdge(getWindow());
+        EdgeToEdgeHelper.applyEdgeToEdge(getWindow(), binding.getRoot());
         MaterialAlertDialogBuilder alertDialog = createAlertDialog();
         binding.button.setOnClickListener(v -> alertDialog.show());
 

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/alerts/snackbar/SnackBarActivity.java

@@ -11,6 +11,7 @@
 import com.d4rk.androidtutorials.java.databinding.ActivitySnackBarBinding;
 import com.d4rk.androidtutorials.java.ui.components.navigation.UpNavigationActivity;
 import com.d4rk.androidtutorials.java.ui.screens.android.CodeActivity;
+import com.d4rk.androidtutorials.java.utils.EdgeToEdgeHelper;
 import com.google.android.material.snackbar.Snackbar;
 
 public class SnackBarActivity extends UpNavigationActivity {
@@ -22,7 +23,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         binding = ActivitySnackBarBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-        WindowCompat.enableEdgeToEdge(getWindow());
+        EdgeToEdgeHelper.applyEdgeToEdge(getWindow(), binding.getRoot());
         binding.button.setOnClickListener(v -> {
             Snackbar snackbar = Snackbar.make(binding.getRoot(), R.string.snack_this_is_a_snackbar, Snackbar.LENGTH_INDEFINITE);
             snackbar.setAction(android.R.string.ok, v1 -> snackbar.dismiss());

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/alerts/toast/ToastActivity.java

@@ -12,6 +12,7 @@
 import com.d4rk.androidtutorials.java.databinding.ActivityToastBinding;
 import com.d4rk.androidtutorials.java.ui.components.navigation.UpNavigationActivity;
 import com.d4rk.androidtutorials.java.ui.screens.android.CodeActivity;
+import com.d4rk.androidtutorials.java.utils.EdgeToEdgeHelper;
 
 public class ToastActivity extends UpNavigationActivity {
     private final Handler handler = new Handler(Looper.getMainLooper());
@@ -22,7 +23,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         binding = ActivityToastBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-        WindowCompat.enableEdgeToEdge(getWindow());
+        EdgeToEdgeHelper.applyEdgeToEdge(getWindow(), binding.getRoot());
 
         binding.button.setOnClickListener(v ->
                 Toast.makeText(this, R.string.toast_this_is_a_toast, Toast.LENGTH_SHORT).show()

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/basics/history/AndroidHistory.java

@@ -7,6 +7,7 @@
 import com.d4rk.androidtutorials.java.ads.AdUtils;
 import com.d4rk.androidtutorials.java.databinding.ActivityAndroidHistoryBinding;
 import com.d4rk.androidtutorials.java.ui.components.navigation.UpNavigationActivity;
+import com.d4rk.androidtutorials.java.utils.EdgeToEdgeHelper;
 
 import me.zhanghai.android.fastscroll.FastScrollerBuilder;
 
@@ -16,7 +17,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         ActivityAndroidHistoryBinding binding = ActivityAndroidHistoryBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-        WindowCompat.enableEdgeToEdge(getWindow());
+        EdgeToEdgeHelper.applyEdgeToEdge(getWindow(), binding.getRoot());
         AdUtils.loadBanner(binding.adView);
         AdUtils.loadBanner(binding.adViewBottom);
         new FastScrollerBuilder(binding.scrollView).useMd2Style().build();

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/basics/permissions/PermissionsTutorialActivity.java

@@ -9,6 +9,7 @@
 import com.d4rk.androidtutorials.java.ads.AdUtils;
 import com.d4rk.androidtutorials.java.databinding.ActivityPermissionsTutorialBinding;
 import com.d4rk.androidtutorials.java.ui.components.navigation.UpNavigationActivity;
+import com.d4rk.androidtutorials.java.utils.EdgeToEdgeHelper;
 
 import me.zhanghai.android.fastscroll.FastScrollerBuilder;
 
@@ -18,7 +19,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         com.d4rk.androidtutorials.java.databinding.ActivityPermissionsTutorialBinding binding = ActivityPermissionsTutorialBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-        WindowCompat.enableEdgeToEdge(getWindow());
+        EdgeToEdgeHelper.applyEdgeToEdge(getWindow(), binding.getRoot());
         AdUtils.loadBanner(binding.adViewBottom);
         AdUtils.loadBanner(binding.adViewLarge);
         new FastScrollerBuilder(binding.scrollView).useMd2Style().build();

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/basics/sdk/AndroidSDK.java

@@ -13,6 +13,7 @@
 import com.d4rk.androidtutorials.java.data.model.AndroidVersion;
 import com.d4rk.androidtutorials.java.databinding.ActivityAndroidSdkBinding;
 import com.d4rk.androidtutorials.java.ui.components.navigation.UpNavigationActivity;
+import com.d4rk.androidtutorials.java.utils.EdgeToEdgeHelper;
 
 import java.util.Arrays;
 import java.util.List;
@@ -65,7 +66,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         binding = ActivityAndroidSdkBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-        WindowCompat.enableEdgeToEdge(getWindow());
+        EdgeToEdgeHelper.applyEdgeToEdge(getWindow(), binding.getRoot());
         AdUtils.loadBanner(binding.adViewBottom);
         AdUtils.loadBanner(binding.adView);
         new FastScrollerBuilder(binding.scrollView).useMd2Style().build();

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/basics/shortcuts/ShortcutsActivity.java

@@ -11,14 +11,15 @@
 import com.d4rk.androidtutorials.java.ads.AdUtils;
 import com.d4rk.androidtutorials.java.databinding.ActivityShortcutsBinding;
 import com.d4rk.androidtutorials.java.ui.components.navigation.UpNavigationActivity;
+import com.d4rk.androidtutorials.java.utils.EdgeToEdgeHelper;
 
 public class ShortcutsActivity extends UpNavigationActivity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         ActivityShortcutsBinding binding = ActivityShortcutsBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-        WindowCompat.enableEdgeToEdge(getWindow());
+        EdgeToEdgeHelper.applyEdgeToEdge(getWindow(), binding.getRoot());
         AdUtils.loadBanner(binding.adViewBottom);
 
         getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_shortcuts, new SettingsFragment()).commit();