Refactor: Remove EdgeToEdgeDelegate and simplify edge-to-edge handling

This commit removes the custom `EdgeToEdgeDelegate` class and replaces its usage throughout the application with a direct call to `WindowCompat.enableEdgeToEdge(getWindow())`.

This change simplifies the edge-to-edge implementation by leveraging the standard AndroidX library feature, reducing custom code and improving maintainability. The version code has also been incremented.

Author: MihaiCristianCondrea

app/build.gradle

@@ -13,7 +13,7 @@ android {
         applicationId 'com.d4rk.androidtutorials.java'
         minSdk 23
         targetSdk 36
-        versionCode 54
+        versionCode 55
         versionName '5.0.3'
         vectorDrawables.useSupportLibrary = true
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'

app/src/main/AndroidManifest.xml

@@ -36,7 +36,7 @@
         android:resizeableActivity="true"
         android:roundIcon="@mipmap/ic_launcher"
         android:supportsRtl="true"
-        android:theme="@style/AppThemeActionBar"
+        android:theme="@style/FitSystemWindowsTheme"
         tools:targetApi="33">
 
         <activity
@@ -300,8 +300,7 @@
             android:name=".ui.screens.android.lessons.start.AndroidStartProjectActivity"
             android:exported="false"
             android:label="@string/android_start"
-            android:parentActivityName=".ui.screens.main.MainActivity"
-            android:theme="@style/AppTheme" />
+            android:parentActivityName=".ui.screens.main.MainActivity" />
         <activity
             android:name=".ui.screens.android.lessons.basics.sdk.AndroidSDK"
             android:exported="false"
@@ -361,7 +360,8 @@
             android:name=".ui.screens.settings.SettingsActivity"
             android:exported="false"
             android:label="@string/settings"
-            android:parentActivityName=".ui.screens.settings.SettingsActivity">
+            android:parentActivityName=".ui.screens.settings.SettingsActivity"
+            android:theme="@style/FitSystemWindowsTheme">
             <intent-filter>
                 <action android:name="android.intent.action.APPLICATION_PREFERENCES" />
             </intent-filter>
@@ -371,6 +371,7 @@
             android:exported="false"
             android:label="@string/support_us"
             android:parentActivityName=".ui.screens.support.SupportActivity" />
+
         <service
             android:name="androidx.appcompat.app.AppLocalesMetadataHolderService"
             android:enabled="false"

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

@@ -3,6 +3,7 @@
 import android.os.Bundle;
 
 import androidx.annotation.NonNull;
+import androidx.core.view.WindowCompat;
 import androidx.fragment.app.Fragment;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.viewpager2.adapter.FragmentStateAdapter;
@@ -14,7 +15,6 @@
 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.EdgeToEdgeDelegate;
 import com.google.android.material.tabs.TabLayoutMediator;
 
 import dagger.hilt.android.AndroidEntryPoint;
@@ -29,8 +29,7 @@ protected void onCreate(Bundle savedInstanceState) {
 
         binding = ActivityTabLayoutBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-
-        EdgeToEdgeDelegate.apply(this, binding.tabLayout);
+        WindowCompat.enableEdgeToEdge(getWindow());
 
         CodeViewModel viewModel = new ViewModelProvider(this).get(CodeViewModel.class);
 

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

@@ -5,11 +5,12 @@
 import android.os.Handler;
 import android.os.Looper;
 
+import androidx.core.view.WindowCompat;
+
 import com.d4rk.androidtutorials.java.R;
 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.EdgeToEdgeDelegate;
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 
 public class AlertDialogActivity extends UpNavigationActivity {
@@ -21,9 +22,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         binding = ActivityAlertDialogBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-
-        EdgeToEdgeDelegate.apply(this, binding.container);
-
+        WindowCompat.enableEdgeToEdge(getWindow());
         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

@@ -5,11 +5,12 @@
 import android.os.Handler;
 import android.os.Looper;
 
+import androidx.core.view.WindowCompat;
+
 import com.d4rk.androidtutorials.java.R;
 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.EdgeToEdgeDelegate;
 import com.google.android.material.snackbar.Snackbar;
 
 public class SnackBarActivity extends UpNavigationActivity {
@@ -21,9 +22,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         binding = ActivitySnackBarBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-
-        EdgeToEdgeDelegate.apply(this, binding.container);
-
+        WindowCompat.enableEdgeToEdge(getWindow());
         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

@@ -6,11 +6,12 @@
 import android.os.Looper;
 import android.widget.Toast;
 
+import androidx.core.view.WindowCompat;
+
 import com.d4rk.androidtutorials.java.R;
 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.EdgeToEdgeDelegate;
 
 public class ToastActivity extends UpNavigationActivity {
     private final Handler handler = new Handler(Looper.getMainLooper());
@@ -21,8 +22,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         binding = ActivityToastBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-
-        EdgeToEdgeDelegate.apply(this, binding.container);
+        WindowCompat.enableEdgeToEdge(getWindow());
 
         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

@@ -2,10 +2,11 @@
 
 import android.os.Bundle;
 
+import androidx.core.view.WindowCompat;
+
 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.EdgeToEdgeDelegate;
 
 import me.zhanghai.android.fastscroll.FastScrollerBuilder;
 
@@ -15,8 +16,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         ActivityAndroidHistoryBinding binding = ActivityAndroidHistoryBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-        EdgeToEdgeDelegate.apply(this, binding.scrollView);
-
+        WindowCompat.enableEdgeToEdge(getWindow());
         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

@@ -4,10 +4,11 @@
 import android.net.Uri;
 import android.os.Bundle;
 
+import androidx.core.view.WindowCompat;
+
 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.EdgeToEdgeDelegate;
 
 import me.zhanghai.android.fastscroll.FastScrollerBuilder;
 
@@ -17,8 +18,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         com.d4rk.androidtutorials.java.databinding.ActivityPermissionsTutorialBinding binding = ActivityPermissionsTutorialBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-        EdgeToEdgeDelegate.apply(this, binding.scrollView);
-
+        WindowCompat.enableEdgeToEdge(getWindow());
         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

@@ -7,11 +7,12 @@
 import android.widget.TableRow;
 import android.widget.TextView;
 
+import androidx.core.view.WindowCompat;
+
 import com.d4rk.androidtutorials.java.ads.AdUtils;
 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.EdgeToEdgeDelegate;
 
 import java.util.Arrays;
 import java.util.List;
@@ -64,8 +65,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         binding = ActivityAndroidSdkBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-        EdgeToEdgeDelegate.apply(this, binding.scrollView);
-
+        WindowCompat.enableEdgeToEdge(getWindow());
         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

@@ -4,6 +4,7 @@
 import android.net.Uri;
 import android.os.Bundle;
 
+import androidx.core.view.WindowCompat;
 import androidx.preference.PreferenceFragmentCompat;
 
 import com.d4rk.androidtutorials.java.R;
@@ -17,7 +18,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         ActivityShortcutsBinding binding = ActivityShortcutsBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-
+        WindowCompat.enableEdgeToEdge(getWindow());
         AdUtils.loadBanner(binding.adViewBottom);
 
         getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_shortcuts, new SettingsFragment()).commit();