UI Polish, Adaptive Icons, Edge-to-Edge Layout Fixes, and Carousel Simplification (#22)

* Implement adaptive icon background with gradient depth

- Created a dedicated background layer XML for the adaptive icon implementation.
- Implemented a rich linear gradient transitioning from vibrant light blue to a deep navy edge.
- Eliminated the flat, single-color background to give the launcher icon a premium, polished aesthetic.

* Add unscaled logo asset for in-app action bar

- Created an exact duplicate of the cell-tower vector graphic specifically for in-app layouts.
- Removed the 75% scaling group from this version so it renders at full 100% size inside the app's UI.
- Decoupled the in-app branding from the launcher icon, preventing the action bar logo from appearing artificially small.

* Scale and add 3D drop shadow to launcher foreground

- Wrapped the core cell-tower vector paths in a scaling group (scaleX="0.75", scaleY="0.75") to add generous padding and negative space around the edges.
- Duplicated the main vector path and applied a semi-transparent dark tint (#40001030) with an X/Y offset.
- Created a subtle optical drop shadow, giving the white icon a floating, three-dimensional depth over the background.

* Add adaptive icon wrapper for Android 8.0+

- Created the API 26+ <adaptive-icon> configuration file to support modern Android launcher shapes.
- Linked the newly split foreground (ic_launcher_foreground) and background (ic_launcher_background) layers.
- Resolved the visual bug on AOSP/Pixel ROMs where the legacy icon was forcibly shrunk inside a white circular background.

* Resolve portrait edge-to-edge layout clipping and Add new icon logo

- Added android:fitsSystemWindows="true" to the root LinearLayout to instruct AOSP Window Managers to respect safe insets.
- Fixed the bug where the top header clipped into the status bar and the footer hid behind the 3-button navigation bar on stock Android.
- Replaced the action bar's ic_launcher_foreground reference with the new unscaled ic_logo_ui drawable.

* Resolve landscape edge-to-edge clipping and icon scaling

- Applied android:fitsSystemWindows="true" to the root landscape layout to ensure safe padding across notches and navigation bars when the device is rotated.
- Swapped the action bar logo reference to use the unscaled ic_logo_ui asset.
- Restored the landscape ImageView dimensions (39dp) to ensure the branding matches the proportions of the portrait layout perfectly.

* Fix landscape static cards cut-off spacing by making them responsive

- Replaced the hardcoded HorizontalScrollView wrapper around the 3 static guide cards with a fluid LinearLayout configured as match_parent.
- Changed the static width (android:layout_width="260dp") of all three individual cards (staticCard1, staticCard2, staticCard3) to 0dp.
- Added android:layout_weight="1" to all three cards.
- This ensures that instead of cutting off or requiring side-scrolling on large screens, all three cards stretch and evenly distribute themselves to seamlessly fill 100% of the available horizontal space regardless of the device's aspect ratio.

* Remove all carousel auto-cycling and timer logic

- Stripped the authorizedCarouselRunnable entirely from the codebase, stopping the 7-second automatic swipe timer.
- Removed the carouselHandler instantiation entirely since background threads and timers are no longer needed for the UI.
- Cleaned up the updateCarouselContext method: it now statically sets currentCarouselIndex = 0 (Page 1) if unauthorized, and statically sets currentCarouselIndex = 1 (Page 2) if authorized.
- Updated the onResume lifecycle hook to instantly snap to the 2nd page if isUIAuthorized is true, without trying to attach a timer runnable.
- Cleaned up the onPause lifecycle hook to completely empty (removed all handler callbacks and preference savings).
- Removed all SharedPreferences logic related to carousel memory state to prevent ghosting or saving incorrect indices across sessions.
- Cleaned up the manual touch listener to remove any removeCallbacks or postDelayed timer resets when the user manually swipes left or right.

* Upgrade ic_launcher with depth and gradient background

- Added Background Gradient
- Added Shadow Effect in main Antenna Icon

Author: Dhangofa

app/src/main/java/com/dhangofa/networktoggle/MainActivity.java

@@ -192,6 +192,7 @@ protected void onCreate(Bundle savedInstanceState) {
         bindSelectionListeners();
 		updateSeparatorVisibility();
         setupCarousel();
+        setupStaticLandscapeCards();
     }
 
     private void configureStatusBar() {
@@ -247,6 +248,21 @@ private void bindLinks() {
     }
 
 
+        private void setupStaticLandscapeCards() {
+        View btn1 = findViewById(R.id.staticCardButton1);
+        if (btn1 != null) {
+            btn1.setOnClickListener(v -> openUrl("https://github.com/Dhangofa/NetToggle/wiki/1.-Execution-Mode-Configuration"));
+        }
+        View btn2 = findViewById(R.id.staticCardButton2);
+        if (btn2 != null) {
+            btn2.setOnClickListener(v -> openUrl("https://github.com/Dhangofa/NetToggle/wiki/2.-Target-SIM-Setup-&-Quick-Tile-Cycle-Guide"));
+        }
+        View btn3 = findViewById(R.id.staticCardButton3);
+        if (btn3 != null) {
+            btn3.setOnClickListener(v -> openUrl("https://github.com/Dhangofa/NetToggle/wiki/3.-Adding-the-Tile-to-Quick-Settings"));
+        }
+    }
+
     private void setupCarousel() {
         if (carouselBackground == null) return;
         carouselItems = new CarouselItem[]{
@@ -270,16 +286,17 @@ private void setupCarousel() {
                 case android.view.MotionEvent.ACTION_CANCEL:
                     float deltaX = event.getX() - touchStartX;
                     if (Math.abs(deltaX) > 100) { 
-                        carouselHandler.removeCallbacks(carouselAutoRunnable);
-                        if (deltaX > 0 && currentCarouselIndex > 0) {
-                            currentCarouselIndex--;
+                        if (deltaX > 0) {
+                            // Swipe right (previous page)
+                            currentCarouselIndex = (currentCarouselIndex - 1 + carouselItems.length) % carouselItems.length;
                             renderCarouselPage(currentCarouselIndex, true, -1);
-                        } else if (deltaX < 0 && currentCarouselIndex < carouselItems.length - 1) {
-                            currentCarouselIndex++;
+                        } else if (deltaX < 0) {
+                            // Swipe left (next page)
+                            currentCarouselIndex = (currentCarouselIndex + 1) % carouselItems.length;
                             renderCarouselPage(currentCarouselIndex, true, 1);
                         }
-                        // Resume after 10 seconds of inactivity
-                        carouselHandler.postDelayed(carouselAutoRunnable, 10000);
+                        
+
                     } else if (event.getAction() == android.view.MotionEvent.ACTION_UP) {
                         v.performClick();
                     }
@@ -343,7 +360,7 @@ private void renderCarouselPage(int index, boolean animate, int direction) {
 
                         // Prepare for animate in
                         view.setTranslationX(moveInX);
-                        view.animate().translationX(0f).alpha(1f).setDuration(duration)
+                        view.animate().translationX(0f).alpha(1f).setDuration(duration / 2)
                             .setInterpolator(new android.view.animation.DecelerateInterpolator())
                             .start();
                     }).start();
@@ -488,22 +505,17 @@ private void bindSelectionListeners() {
     @Override
     protected void onResume() {
         super.onResume();
+
         if (appPreferences != null) updateAutoSimWarning();
         checkAndRequestPermission();
         updateErrorBanner();
         updateCapabilities();
-        if (carouselHandler != null && carouselAutoRunnable != null) {
-            carouselHandler.removeCallbacks(carouselAutoRunnable);
-            carouselHandler.postDelayed(carouselAutoRunnable, 5000);
-        }
+
     }
 
     @Override
     protected void onPause() {
         super.onPause();
-        if (carouselHandler != null && carouselAutoRunnable != null) {
-            carouselHandler.removeCallbacks(carouselAutoRunnable);
-        }
     }
 
     private void checkAndRequestPermission() {
@@ -733,56 +745,40 @@ private void setStatus(String text, int color) {
 	}
 
 
-    private android.os.Handler carouselHandler = new android.os.Handler(android.os.Looper.getMainLooper());
 
-    private Runnable carouselAutoRunnable = new Runnable() {
-        @Override
-        public void run() {
-            if (carouselItems == null) return;
-            
-            int nextIndex;
-            if (!isUIAuthorized) {
-                // If unauthorized but user manually swiped away, bring them back to 0 eventually
-                nextIndex = 0;
-            } else {
-                // If authorized, cycle through logically
-                nextIndex = (currentCarouselIndex == 2) ? 1 : (currentCarouselIndex + 1);
-            }
-            
-            if (nextIndex != currentCarouselIndex) {
-                int direction = (nextIndex > currentCarouselIndex) ? 1 : -1;
-                currentCarouselIndex = nextIndex;
-                renderCarouselPage(currentCarouselIndex, true, direction);
-            }
-            carouselHandler.postDelayed(this, 5000);
-        }
-    };
+
+
+    
+    
 
     private void updateCarouselContext(boolean authorized) {
         if (carouselBackground == null || carouselItems == null) return;
-        carouselHandler.removeCallbacks(carouselAutoRunnable);
+
+        boolean animate = !isFirstCarouselRender;
+        isFirstCarouselRender = false;
 
         if (!authorized) {
-            if (currentCarouselIndex != 0) {
+            if (currentCarouselIndex != 0 || !animate) {
                 currentCarouselIndex = 0;
-                renderCarouselPage(0, true, -1);
+                renderCarouselPage(0, animate, -1);
             }
-            // Will auto-correct to 0 every 5 seconds if user swipes away while unauthorized
-            carouselHandler.postDelayed(carouselAutoRunnable, 5000);
         } else {
-            if (currentCarouselIndex == 0) {
+            // Always start at 2nd page (index 1) on auth transition
+            if (currentCarouselIndex != 1 || !animate) {
                 currentCarouselIndex = 1;
-                renderCarouselPage(1, true, 1);
+                renderCarouselPage(1, animate, 1);
             }
-            carouselHandler.postDelayed(carouselAutoRunnable, 5000);
         }
     }
 
     private boolean isUIAuthorized = false;
+    private boolean isFirstCarouselRender = true;
+    
+    
 	private void updateAuthorizationUI(boolean authorized) {
-	    updateCarouselContext(authorized);
 	    if (isUIAuthorized == authorized) return;
 	    isUIAuthorized = authorized;
+	    updateCarouselContext(authorized);
 
 	    float alpha = authorized ? 1.0f : 0.4f;
 	    View targetSimCard = findViewById(R.id.targetSimRadioGroup);

app/src/main/res/drawable-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/drawable/ic_launcher.xml

@@ -1,17 +1,48 @@
-<?xml version="1.0" encoding="utf-8"?>
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
     android:width="108dp"
     android:height="108dp"
     android:viewportWidth="108"
     android:viewportHeight="108">
 
-    <!-- Background Circle -->
+    <!-- Background Circle for legacy icon (Flat blue fallback) -->
     <path
-        android:fillColor="#0066FF"
+        android:fillColor="#0055FF"
         android:pathData="M54,54m-50,0a50,50 0,1 1,100 0a50,50 0,1 1,-100 0" />
+
+    <!-- Background Circle with Gradient -->
+    <path android:pathData="M54,54m-50,0a50,50 0,1 1,100 0a50,50 0,1 1,-100 0">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:startX="4"
+                android:startY="4"
+                android:endX="104"
+                android:endY="104"
+                android:type="linear">
+                <item android:offset="0.0" android:color="#2979FF" /> <!-- Vibrant light blue -->
+                <item android:offset="0.6" android:color="#0055FF" /> <!-- Standard solid blue -->
+                <item android:offset="1.0" android:color="#002277" /> <!-- Deep navy edge -->
+            </gradient>
+        </aapt:attr>
+    </path>
+
+    <!-- Foreground Group -->
+    <group 
+        android:translateX="0.0"
+        android:translateY="0.0">
 
-    <!-- Stylized Cell Tower & Signal Waves -->
-    <path
-        android:fillColor="#FFFFFF"
-        android:pathData="M54,28 A2,2 0 0,0 52,30 L52,42 L42,42 A2,2 0 0,0 40,44 L40,78 A2,2 0 0,0 42,80 L66,80 A2,2 0 0,0 68,78 L68,44 A2,2 0 0,0 66,42 L56,42 L56,30 A2,2 0 0,0 54,28 Z M45,47 L63,47 L63,75 L45,75 Z M32,46 A2,2 0 0,0 30,48 C30,58 34,68 40,75 A2,2 0 0,0 43,72 C37,66 34,58 34,48 A2,2 0 0,0 32,46 Z M76,46 A2,2 0 0,0 74,48 C74,58 71,66 65,72 A2,2 0 0,0 68,75 C74,68 78,58 78,48 A2,2 0 0,0 76,46 Z M23,36 A2,2 0 0,0 21,38 C21,52 26,65 35,76 A2,2 0 0,0 38,73 C29,63 25,51 25,38 A2,2 0 0,0 23,36 Z M85,36 A2,2 0 0,0 83,38 C83,51 79,63 70,73 A2,2 0 0,0 73,76 C82,65 87,52 87,38 A2,2 0 0,0 85,36 Z" />
+        <!-- Subtle Drop Shadow to create floating depth -->
+        <group android:translateX="2.5" android:translateY="4.5">
+            <path
+                android:fillColor="#40001030"
+                android:fillType="nonZero"
+                android:pathData="M54,28 A2,2 0 0,0 52,30 L52,42 L42,42 A2,2 0 0,0 40,44 L40,78 A2,2 0 0,0 42,80 L66,80 A2,2 0 0,0 68,78 L68,44 A2,2 0 0,0 66,42 L56,42 L56,30 A2,2 0 0,0 54,28 Z M45,47 L63,47 L63,75 L45,75 Z M32,46 A2,2 0 0,0 30,48 C30,58 34,68 40,75 A2,2 0 0,0 43,72 C37,66 34,58 34,48 A2,2 0 0,0 32,46 Z M76,46 A2,2 0 0,0 74,48 C74,58 71,66 65,72 A2,2 0 0,0 68,75 C74,68 78,58 78,48 A2,2 0 0,0 76,46 Z M23,36 A2,2 0 0,0 21,38 C21,52 26,65 35,76 A2,2 0 0,0 38,73 C29,63 25,51 25,38 A2,2 0 0,0 23,36 Z M85,36 A2,2 0 0,0 83,38 C83,51 79,63 70,73 A2,2 0 0,0 73,76 C82,65 87,52 87,38 A2,2 0 0,0 85,36 Z" />
+        </group>
+
+        <!-- Main Crisp White Icon -->
+        <path
+            android:fillColor="#FFFFFF"
+            android:fillType="nonZero"
+            android:pathData="M54,28 A2,2 0 0,0 52,30 L52,42 L42,42 A2,2 0 0,0 40,44 L40,78 A2,2 0 0,0 42,80 L66,80 A2,2 0 0,0 68,78 L68,44 A2,2 0 0,0 66,42 L56,42 L56,30 A2,2 0 0,0 54,28 Z M45,47 L63,47 L63,75 L45,75 Z M32,46 A2,2 0 0,0 30,48 C30,58 34,68 40,75 A2,2 0 0,0 43,72 C37,66 34,58 34,48 A2,2 0 0,0 32,46 Z M76,46 A2,2 0 0,0 74,48 C74,58 71,66 65,72 A2,2 0 0,0 68,75 C74,68 78,58 78,48 A2,2 0 0,0 76,46 Z M23,36 A2,2 0 0,0 21,38 C21,52 26,65 35,76 A2,2 0 0,0 38,73 C29,63 25,51 25,38 A2,2 0 0,0 23,36 Z M85,36 A2,2 0 0,0 83,38 C83,51 79,63 70,73 A2,2 0 0,0 73,76 C82,65 87,52 87,38 A2,2 0 0,0 85,36 Z" />
+    </group>
 </vector>

app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M0,0h108v108h-108z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:startX="0"
+                android:startY="0"
+                android:endX="108"
+                android:endY="108"
+                android:type="linear">
+                <item android:offset="0.0" android:color="#2979FF" /> <!-- Vibrant light blue -->
+                <item android:offset="0.6" android:color="#0055FF" /> <!-- Standard solid blue -->
+                <item android:offset="1.0" android:color="#002277" /> <!-- Deep navy edge -->
+            </gradient>
+        </aapt:attr>
+    </path>
+</vector>

app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -4,10 +4,25 @@
     android:height="108dp"
     android:viewportWidth="108"
     android:viewportHeight="108">
-    <path
-        android:fillColor="#FFFFFF"
-        android:fillType="nonZero"
-        android:pathData="M54,28 A2,2 0 0,0 52,30 L52,42 L42,42 A2,2 0 0,0 40,44 L40,78 A2,2 0 0,0 42,80 L66,80 A2,2 0 0,0 68,78 L68,44 A2,2 0 0,0 66,42 L56,42 L56,30 A2,2 0 0,0 54,28 Z M45,47 L63,47 L63,75 L45,75 Z M32,46 A2,2 0 0,0 30,48 C30,58 34,68 40,75 A2,2 0 0,0 43,72 C37,66 34,58 34,48 A2,2 0 0,0 32,46 Z M76,46 A2,2 0 0,0 74,48 C74,58 71,66 65,72 A2,2 0 0,0 68,75 C74,68 78,58 78,48 A2,2 0 0,0 76,46 Z M23,36 A2,2 0 0,0 21,38 C21,52 26,65 35,76 A2,2 0 0,0 38,73 C29,63 25,51 25,38 A2,2 0 0,0 23,36 Z M85,36 A2,2 0 0,0 83,38 C83,51 79,63 70,73 A2,2 0 0,0 73,76 C82,65 87,52 87,38 A2,2 0 0,0 85,36 Z"
-        android:strokeWidth="1"
-        android:strokeColor="#00000000" />
+    
+    <group 
+        android:pivotX="54" 
+        android:pivotY="54" 
+        android:scaleX="0.75" 
+        android:scaleY="0.75">
+        
+        <!-- Subtle Drop Shadow to create floating depth -->
+        <group android:translateX="2.5" android:translateY="4.5">
+            <path
+                android:fillColor="#40001030"
+                android:fillType="nonZero"
+                android:pathData="M54,28 A2,2 0 0,0 52,30 L52,42 L42,42 A2,2 0 0,0 40,44 L40,78 A2,2 0 0,0 42,80 L66,80 A2,2 0 0,0 68,78 L68,44 A2,2 0 0,0 66,42 L56,42 L56,30 A2,2 0 0,0 54,28 Z M45,47 L63,47 L63,75 L45,75 Z M32,46 A2,2 0 0,0 30,48 C30,58 34,68 40,75 A2,2 0 0,0 43,72 C37,66 34,58 34,48 A2,2 0 0,0 32,46 Z M76,46 A2,2 0 0,0 74,48 C74,58 71,66 65,72 A2,2 0 0,0 68,75 C74,68 78,58 78,48 A2,2 0 0,0 76,46 Z M23,36 A2,2 0 0,0 21,38 C21,52 26,65 35,76 A2,2 0 0,0 38,73 C29,63 25,51 25,38 A2,2 0 0,0 23,36 Z M85,36 A2,2 0 0,0 83,38 C83,51 79,63 70,73 A2,2 0 0,0 73,76 C82,65 87,52 87,38 A2,2 0 0,0 85,36 Z" />
+        </group>
+
+        <!-- Main Crisp White Icon -->
+        <path
+            android:fillColor="#FFFFFF"
+            android:fillType="nonZero"
+            android:pathData="M54,28 A2,2 0 0,0 52,30 L52,42 L42,42 A2,2 0 0,0 40,44 L40,78 A2,2 0 0,0 42,80 L66,80 A2,2 0 0,0 68,78 L68,44 A2,2 0 0,0 66,42 L56,42 L56,30 A2,2 0 0,0 54,28 Z M45,47 L63,47 L63,75 L45,75 Z M32,46 A2,2 0 0,0 30,48 C30,58 34,68 40,75 A2,2 0 0,0 43,72 C37,66 34,58 34,48 A2,2 0 0,0 32,46 Z M76,46 A2,2 0 0,0 74,48 C74,58 71,66 65,72 A2,2 0 0,0 68,75 C74,68 78,58 78,48 A2,2 0 0,0 76,46 Z M23,36 A2,2 0 0,0 21,38 C21,52 26,65 35,76 A2,2 0 0,0 38,73 C29,63 25,51 25,38 A2,2 0 0,0 23,36 Z M85,36 A2,2 0 0,0 83,38 C83,51 79,63 70,73 A2,2 0 0,0 73,76 C82,65 87,52 87,38 A2,2 0 0,0 85,36 Z" />
+    </group>
 </vector>

app/src/main/res/drawable/ic_logo_ui.xml

@@ -0,0 +1,13 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M54,28 A2,2 0 0,0 52,30 L52,42 L42,42 A2,2 0 0,0 40,44 L40,78 A2,2 0 0,0 42,80 L66,80 A2,2 0 0,0 68,78 L68,44 A2,2 0 0,0 66,42 L56,42 L56,30 A2,2 0 0,0 54,28 Z M45,47 L63,47 L63,75 L45,75 Z M32,46 A2,2 0 0,0 30,48 C30,58 34,68 40,75 A2,2 0 0,0 43,72 C37,66 34,58 34,48 A2,2 0 0,0 32,46 Z M76,46 A2,2 0 0,0 74,48 C74,58 71,66 65,72 A2,2 0 0,0 68,75 C74,68 78,58 78,48 A2,2 0 0,0 76,46 Z M23,36 A2,2 0 0,0 21,38 C21,52 26,65 35,76 A2,2 0 0,0 38,73 C29,63 25,51 25,38 A2,2 0 0,0 23,36 Z M85,36 A2,2 0 0,0 83,38 C83,51 79,63 70,73 A2,2 0 0,0 73,76 C82,65 87,52 87,38 A2,2 0 0,0 85,36 Z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>