From 84b91a4f264d31b17df9f456fa8ddcab77be4bb6 Mon Sep 17 00:00:00 2001
From: sheiksyedm <sheiksyedm@syncfusion.com>
Date: Mon, 29 Jun 2026 15:46:45 +0530
Subject: [PATCH 1/2] Fix Material Slider ACW implementor build failure (#1484)

Remove the restricted BaseOnChangeListener/BaseOnSliderTouchListener base
interfaces and break the C# implements chain on the typed sub-interfaces to
avoid the ACW type-erasure clash. Re-add typed AddOn*/RemoveOn* listener
methods via Additions so the public API uses Slider.IOnChangeListener and
RangeSlider.IOnChangeListener as recommended by Android. Bump nugetVersion to
1.14.0.4.
---
 config.json                                   |   2 +-
 .../Additions/SliderListenerMethods.cs        | 100 ++++++++++++++++++
 .../PublicAPI/PublicAPI.Unshipped.txt         |  40 +++++--
 .../material/Transforms/Metadata.xml          |  70 ++++++------
 4 files changed, 163 insertions(+), 49 deletions(-)
 create mode 100644 source/com.google.android.material/material/Additions/SliderListenerMethods.cs

diff --git a/config.json b/config.json
index 4813778fe..91b0a3067 100644
--- a/config.json
+++ b/config.json
@@ -3518,7 +3518,7 @@
         "groupId": "com.google.android.material",
         "artifactId": "material",
         "version": "1.14.0",
-        "nugetVersion": "1.14.0.3",
+        "nugetVersion": "1.14.0.4",
         "nugetId": "Xamarin.Google.Android.Material",
         "comments": "Requires API-34"
       },
diff --git a/source/com.google.android.material/material/Additions/SliderListenerMethods.cs b/source/com.google.android.material/material/Additions/SliderListenerMethods.cs
new file mode 100644
index 000000000..497d0d657
--- /dev/null
+++ b/source/com.google.android.material/material/Additions/SliderListenerMethods.cs
@@ -0,0 +1,100 @@
+using System;
+using Android.Runtime;
+
+namespace Google.Android.Material.Slider;
+
+// Hand-written add/remove listener methods for Slider and RangeSlider.
+// The auto-generated versions are removed from Metadata.xml because the base interfaces
+// (BaseOnChangeListener, BaseOnSliderTouchListener) use erased generics that cause
+// ACW type erasure clashes and implementor failures. These manual implementations use
+// the correct JNI signature while accepting the typed sub-interfaces directly.
+// This pattern (remove in metadata + re-add in Additions) is standard in .NET Android bindings.
+
+public partial class Slider
+{
+    const string _addOnChangeListenerJni = "(Lcom/google/android/material/slider/BaseOnChangeListener;)V";
+    const string _removeOnChangeListenerJni = "(Lcom/google/android/material/slider/BaseOnChangeListener;)V";
+    const string _addOnSliderTouchListenerJni = "(Lcom/google/android/material/slider/BaseOnSliderTouchListener;)V";
+    const string _removeOnSliderTouchListenerJni = "(Lcom/google/android/material/slider/BaseOnSliderTouchListener;)V";
+
+    public unsafe void AddOnChangeListener(Slider.IOnChangeListener listener)
+    {
+        const string __id = "addOnChangeListener." + _addOnChangeListenerJni;
+        Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
+        __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
+        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        GC.KeepAlive(listener);
+    }
+
+    public unsafe void RemoveOnChangeListener(Slider.IOnChangeListener listener)
+    {
+        const string __id = "removeOnChangeListener." + _removeOnChangeListenerJni;
+        Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
+        __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
+        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        GC.KeepAlive(listener);
+    }
+
+    public unsafe void AddOnSliderTouchListener(Slider.IOnSliderTouchListener listener)
+    {
+        const string __id = "addOnSliderTouchListener." + _addOnSliderTouchListenerJni;
+        Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
+        __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
+        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        GC.KeepAlive(listener);
+    }
+
+    public unsafe void RemoveOnSliderTouchListener(Slider.IOnSliderTouchListener listener)
+    {
+        const string __id = "removeOnSliderTouchListener." + _removeOnSliderTouchListenerJni;
+        Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
+        __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
+        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        GC.KeepAlive(listener);
+    }
+}
+
+public partial class RangeSlider
+{
+    const string _addOnChangeListenerJni = "(Lcom/google/android/material/slider/BaseOnChangeListener;)V";
+    const string _removeOnChangeListenerJni = "(Lcom/google/android/material/slider/BaseOnChangeListener;)V";
+    const string _addOnSliderTouchListenerJni = "(Lcom/google/android/material/slider/BaseOnSliderTouchListener;)V";
+    const string _removeOnSliderTouchListenerJni = "(Lcom/google/android/material/slider/BaseOnSliderTouchListener;)V";
+
+    public unsafe void AddOnChangeListener(RangeSlider.IOnChangeListener listener)
+    {
+        const string __id = "addOnChangeListener." + _addOnChangeListenerJni;
+        Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
+        __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
+        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        GC.KeepAlive(listener);
+    }
+
+    public unsafe void RemoveOnChangeListener(RangeSlider.IOnChangeListener listener)
+    {
+        const string __id = "removeOnChangeListener." + _removeOnChangeListenerJni;
+        Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
+        __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
+        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        GC.KeepAlive(listener);
+    }
+
+    public unsafe void AddOnSliderTouchListener(RangeSlider.IOnSliderTouchListener listener)
+    {
+        const string __id = "addOnSliderTouchListener." + _addOnSliderTouchListenerJni;
+        Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
+        __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
+        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        GC.KeepAlive(listener);
+    }
+
+    public unsafe void RemoveOnSliderTouchListener(RangeSlider.IOnSliderTouchListener listener)
+    {
+        const string __id = "removeOnSliderTouchListener." + _removeOnSliderTouchListenerJni;
+        Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
+        __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
+        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        GC.KeepAlive(listener);
+    }
+}
+
diff --git a/source/com.google.android.material/material/PublicAPI/PublicAPI.Unshipped.txt b/source/com.google.android.material/material/PublicAPI/PublicAPI.Unshipped.txt
index 6c8e0ffac..77bf41019 100644
--- a/source/com.google.android.material/material/PublicAPI/PublicAPI.Unshipped.txt
+++ b/source/com.google.android.material/material/PublicAPI/PublicAPI.Unshipped.txt
@@ -1982,8 +1982,6 @@ Google.Android.Material.Slider.BasicLabelFormatter
 Google.Android.Material.Slider.BasicLabelFormatter.BasicLabelFormatter() -> void
 Google.Android.Material.Slider.BasicLabelFormatter.GetFormattedValue(float value) -> string!
 Google.Android.Material.Slider.BasicLabelFormatter.InterfaceConsts
-Google.Android.Material.Slider.IBaseOnChangeListener
-Google.Android.Material.Slider.IBaseOnSliderTouchListener
 Google.Android.Material.Slider.ILabelFormatter
 Google.Android.Material.Slider.ILabelFormatter.GetFormattedValue(float p0) -> string!
 Google.Android.Material.Slider.ISliderOrientation
@@ -1991,6 +1989,13 @@ Google.Android.Material.Slider.ITickVisibilityMode
 Google.Android.Material.Slider.LabelFormatter
 Google.Android.Material.Slider.LabelFormatterConsts
 Google.Android.Material.Slider.RangeSlider
+Google.Android.Material.Slider.RangeSlider.AddOnChangeListener(Google.Android.Material.Slider.RangeSlider.IOnChangeListener! listener) -> void
+Google.Android.Material.Slider.RangeSlider.AddOnSliderTouchListener(Google.Android.Material.Slider.RangeSlider.IOnSliderTouchListener! listener) -> void
+Google.Android.Material.Slider.RangeSlider.ChangeEventArgs
+Google.Android.Material.Slider.RangeSlider.ChangeEventArgs.ChangeEventArgs(Google.Android.Material.Slider.RangeSlider! p0, float p1, bool p2) -> void
+Google.Android.Material.Slider.RangeSlider.ChangeEventArgs.P0.get -> Google.Android.Material.Slider.RangeSlider!
+Google.Android.Material.Slider.RangeSlider.ChangeEventArgs.P1.get -> float
+Google.Android.Material.Slider.RangeSlider.ChangeEventArgs.P2.get -> bool
 Google.Android.Material.Slider.RangeSlider.IOnChangeListener
 Google.Android.Material.Slider.RangeSlider.IOnChangeListener.OnValueChange(Google.Android.Material.Slider.RangeSlider! p0, float p1, bool p2) -> void
 Google.Android.Material.Slider.RangeSlider.IOnSliderTouchListener
@@ -2000,17 +2005,40 @@ Google.Android.Material.Slider.RangeSlider.RangeSlider(Android.Content.Context!
 Google.Android.Material.Slider.RangeSlider.RangeSlider(Android.Content.Context! context, Android.Util.IAttributeSet? attrs) -> void
 Google.Android.Material.Slider.RangeSlider.RangeSlider(Android.Content.Context! context, Android.Util.IAttributeSet? attrs, int defStyleAttr) -> void
 Google.Android.Material.Slider.RangeSlider.RangeSlider(nint javaReference, Android.Runtime.JniHandleOwnership transfer) -> void
+Google.Android.Material.Slider.RangeSlider.RemoveOnChangeListener(Google.Android.Material.Slider.RangeSlider.IOnChangeListener! listener) -> void
+Google.Android.Material.Slider.RangeSlider.RemoveOnSliderTouchListener(Google.Android.Material.Slider.RangeSlider.IOnSliderTouchListener! listener) -> void
+Google.Android.Material.Slider.RangeSlider.StartTrackingTouchEventArgs
+Google.Android.Material.Slider.RangeSlider.StartTrackingTouchEventArgs.P0.get -> Google.Android.Material.Slider.RangeSlider!
+Google.Android.Material.Slider.RangeSlider.StartTrackingTouchEventArgs.StartTrackingTouchEventArgs(Google.Android.Material.Slider.RangeSlider! p0) -> void
+Google.Android.Material.Slider.RangeSlider.StopTrackingTouchEventArgs
+Google.Android.Material.Slider.RangeSlider.StopTrackingTouchEventArgs.P0.get -> Google.Android.Material.Slider.RangeSlider!
+Google.Android.Material.Slider.RangeSlider.StopTrackingTouchEventArgs.StopTrackingTouchEventArgs(Google.Android.Material.Slider.RangeSlider! p0) -> void
 Google.Android.Material.Slider.Slider
+Google.Android.Material.Slider.Slider.AddOnChangeListener(Google.Android.Material.Slider.Slider.IOnChangeListener! listener) -> void
+Google.Android.Material.Slider.Slider.AddOnSliderTouchListener(Google.Android.Material.Slider.Slider.IOnSliderTouchListener! listener) -> void
+Google.Android.Material.Slider.Slider.ChangeEventArgs
+Google.Android.Material.Slider.Slider.ChangeEventArgs.ChangeEventArgs(Google.Android.Material.Slider.Slider! p0, float p1, bool p2) -> void
+Google.Android.Material.Slider.Slider.ChangeEventArgs.P0.get -> Google.Android.Material.Slider.Slider!
+Google.Android.Material.Slider.Slider.ChangeEventArgs.P1.get -> float
+Google.Android.Material.Slider.Slider.ChangeEventArgs.P2.get -> bool
 Google.Android.Material.Slider.Slider.IOnChangeListener
 Google.Android.Material.Slider.Slider.IOnChangeListener.OnValueChange(Google.Android.Material.Slider.Slider! p0, float p1, bool p2) -> void
 Google.Android.Material.Slider.Slider.IOnSliderTouchListener
 Google.Android.Material.Slider.Slider.IOnSliderTouchListener.OnStartTrackingTouch(Google.Android.Material.Slider.Slider! p0) -> void
 Google.Android.Material.Slider.Slider.IOnSliderTouchListener.OnStopTrackingTouch(Google.Android.Material.Slider.Slider! p0) -> void
+Google.Android.Material.Slider.Slider.RemoveOnChangeListener(Google.Android.Material.Slider.Slider.IOnChangeListener! listener) -> void
+Google.Android.Material.Slider.Slider.RemoveOnSliderTouchListener(Google.Android.Material.Slider.Slider.IOnSliderTouchListener! listener) -> void
 Google.Android.Material.Slider.Slider.SetEnabled(bool p0) -> void
 Google.Android.Material.Slider.Slider.Slider(Android.Content.Context! context) -> void
 Google.Android.Material.Slider.Slider.Slider(Android.Content.Context! context, Android.Util.IAttributeSet? attrs) -> void
 Google.Android.Material.Slider.Slider.Slider(Android.Content.Context! context, Android.Util.IAttributeSet? attrs, int defStyleAttr) -> void
 Google.Android.Material.Slider.Slider.Slider(nint javaReference, Android.Runtime.JniHandleOwnership transfer) -> void
+Google.Android.Material.Slider.Slider.StartTrackingTouchEventArgs
+Google.Android.Material.Slider.Slider.StartTrackingTouchEventArgs.P0.get -> Google.Android.Material.Slider.Slider!
+Google.Android.Material.Slider.Slider.StartTrackingTouchEventArgs.StartTrackingTouchEventArgs(Google.Android.Material.Slider.Slider! p0) -> void
+Google.Android.Material.Slider.Slider.StopTrackingTouchEventArgs
+Google.Android.Material.Slider.Slider.StopTrackingTouchEventArgs.P0.get -> Google.Android.Material.Slider.Slider!
+Google.Android.Material.Slider.Slider.StopTrackingTouchEventArgs.StopTrackingTouchEventArgs(Google.Android.Material.Slider.Slider! p0) -> void
 Google.Android.Material.Slider.SliderOrientation
 Google.Android.Material.Slider.SliderOrientationConsts
 Google.Android.Material.Slider.TickVisibilityMode
@@ -6721,8 +6749,6 @@ virtual Google.Android.Material.SideSheet.SideSheetDialog.DismissWithSheetAnimat
 virtual Google.Android.Material.SideSheet.SideSheetDialog.SetFitsSystemWindows(bool p0) -> void
 virtual Google.Android.Material.SideSheet.SideSheetDialog.SetSheetEdge(int p0) -> void
 virtual Google.Android.Material.Slider.RangeSlider.ActiveThumbIndex.get -> int
-virtual Google.Android.Material.Slider.RangeSlider.AddOnChangeListener(Google.Android.Material.Slider.IBaseOnChangeListener! listener) -> void
-virtual Google.Android.Material.Slider.RangeSlider.AddOnSliderTouchListener(Google.Android.Material.Slider.IBaseOnSliderTouchListener! listener) -> void
 virtual Google.Android.Material.Slider.RangeSlider.Centered.get -> bool
 virtual Google.Android.Material.Slider.RangeSlider.Centered.set -> void
 virtual Google.Android.Material.Slider.RangeSlider.ClearOnChangeListeners() -> void
@@ -6744,8 +6770,6 @@ virtual Google.Android.Material.Slider.RangeSlider.MinSeparation.get -> float
 virtual Google.Android.Material.Slider.RangeSlider.MinSeparation.set -> void
 virtual Google.Android.Material.Slider.RangeSlider.OnSaveInstanceState() -> Android.OS.IParcelable!
 virtual Google.Android.Material.Slider.RangeSlider.PickActiveThumb() -> bool
-virtual Google.Android.Material.Slider.RangeSlider.RemoveOnChangeListener(Google.Android.Material.Slider.IBaseOnChangeListener! listener) -> void
-virtual Google.Android.Material.Slider.RangeSlider.RemoveOnSliderTouchListener(Google.Android.Material.Slider.IBaseOnSliderTouchListener! listener) -> void
 virtual Google.Android.Material.Slider.RangeSlider.ScheduleTooltipTimeout() -> void
 virtual Google.Android.Material.Slider.RangeSlider.SetActiveThumbIndex(int index) -> void
 virtual Google.Android.Material.Slider.RangeSlider.SetCustomThumbDrawable(Android.Graphics.Drawables.Drawable! drawable) -> void
@@ -6838,8 +6862,6 @@ virtual Google.Android.Material.Slider.RangeSlider.ValueTo.set -> void
 virtual Google.Android.Material.Slider.RangeSlider.Values.get -> System.Collections.Generic.IList<Java.Lang.Float!>!
 virtual Google.Android.Material.Slider.RangeSlider.Values.set -> void
 virtual Google.Android.Material.Slider.Slider.ActiveThumbIndex.get -> int
-virtual Google.Android.Material.Slider.Slider.AddOnChangeListener(Google.Android.Material.Slider.IBaseOnChangeListener! listener) -> void
-virtual Google.Android.Material.Slider.Slider.AddOnSliderTouchListener(Google.Android.Material.Slider.IBaseOnSliderTouchListener! listener) -> void
 virtual Google.Android.Material.Slider.Slider.Centered.get -> bool
 virtual Google.Android.Material.Slider.Slider.Centered.set -> void
 virtual Google.Android.Material.Slider.Slider.ClearOnChangeListeners() -> void
@@ -6859,8 +6881,6 @@ virtual Google.Android.Material.Slider.Slider.LabelBehavior.get -> int
 virtual Google.Android.Material.Slider.Slider.LabelBehavior.set -> void
 virtual Google.Android.Material.Slider.Slider.MinSeparation.get -> float
 virtual Google.Android.Material.Slider.Slider.PickActiveThumb() -> bool
-virtual Google.Android.Material.Slider.Slider.RemoveOnChangeListener(Google.Android.Material.Slider.IBaseOnChangeListener! listener) -> void
-virtual Google.Android.Material.Slider.Slider.RemoveOnSliderTouchListener(Google.Android.Material.Slider.IBaseOnSliderTouchListener! listener) -> void
 virtual Google.Android.Material.Slider.Slider.ScheduleTooltipTimeout() -> void
 virtual Google.Android.Material.Slider.Slider.SetActiveThumbIndex(int index) -> void
 virtual Google.Android.Material.Slider.Slider.SetCustomThumbDrawable(Android.Graphics.Drawables.Drawable! drawable) -> void
diff --git a/source/com.google.android.material/material/Transforms/Metadata.xml b/source/com.google.android.material/material/Transforms/Metadata.xml
index fac3fdb71..451b66000 100644
--- a/source/com.google.android.material/material/Transforms/Metadata.xml
+++ b/source/com.google.android.material/material/Transforms/Metadata.xml
@@ -319,49 +319,43 @@
       com.google.android.material.appbar.AppBarLayout
     </attr>
 
-    <!-- Fix BaseSlider addOnChangeListener and removeOnChangeListener methods -->
-    <attr
-      path="/api/package[@name='com.google.android.material.slider']/class[@name='BaseSlider']/method[@name='addOnChangeListener' and count(parameter)=1 and parameter[1][@type='L']]/parameter[1]"
-      name="type"
-      >
-      com.google.android.material.slider.BaseOnChangeListener
-    </attr>
-    <attr
-      path="/api/package[@name='com.google.android.material.slider']/class[@name='BaseSlider']/method[@name='removeOnChangeListener' and count(parameter)=1 and parameter[1][@type='L']]/parameter[1]"
-      name="type"
-      >
-      com.google.android.material.slider.BaseOnChangeListener
-    </attr>
-    
-    <!-- Fix BaseSlider addOnSliderTouchListener and removeOnSliderTouchListener methods -->
-    <attr
-      path="/api/package[@name='com.google.android.material.slider']/class[@name='BaseSlider']/method[@name='addOnSliderTouchListener' and count(parameter)=1 and parameter[1][@type='T']]/parameter[1]"
-      name="type"
-      >
-      com.google.android.material.slider.BaseOnSliderTouchListener
-    </attr>
-    <attr
-      path="/api/package[@name='com.google.android.material.slider']/class[@name='BaseSlider']/method[@name='removeOnSliderTouchListener' and count(parameter)=1 and parameter[1][@type='T']]/parameter[1]"
-      name="type"
-      >
-      com.google.android.material.slider.BaseOnSliderTouchListener
-    </attr>
+    <!-- Remove deprecated BaseOnChangeListener and BaseOnSliderTouchListener interfaces entirely.
+         These base interfaces use erased generics that cause ACW type erasure clashes when
+         implemented alongside their typed sub-interfaces (Slider.OnChangeListener, etc.).
+         The binding generator creates Implementor Java classes for any interface referenced in
+         add/removeListener pairs, but these implementors cannot satisfy the Java abstract method
+         contracts because of the erasure. Removing the base interfaces eliminates the
+         implementor generation (no interface type → no implementor). -->
+    <remove-node
+      path="/api/package[@name='com.google.android.material.slider']/interface[@name='BaseOnChangeListener']" />
+    <remove-node
+      path="/api/package[@name='com.google.android.material.slider']/interface[@name='BaseOnSliderTouchListener']" />
 
-    <!-- Remove erased onValueChange from BaseOnChangeListener to prevent ACW type erasure clash.
-         The typed sub-interfaces (Slider.OnChangeListener, RangeSlider.OnChangeListener) provide
-         the concrete onValueChange(Slider/RangeSlider, float, boolean) methods that users implement.
-         Without this, implementing Slider.IOnChangeListener causes Java error:
-         "name clash: class has two methods with the same erasure" because the ACW generates both
-         onValueChange(Object,...) from the base and onValueChange(Slider,...) from the sub-interface. -->
+    <!-- Remove the 'implements BaseOnChangeListener/BaseOnSliderTouchListener' from the typed
+         sub-interfaces so they don't reference the now-removed base types.
+         This makes them standalone interfaces with just their typed methods. -->
+    <remove-node
+      path="/api/package[@name='com.google.android.material.slider']/interface[@name='Slider.OnChangeListener']/implements[@name='com.google.android.material.slider.BaseOnChangeListener']" />
+    <remove-node
+      path="/api/package[@name='com.google.android.material.slider']/interface[@name='Slider.OnSliderTouchListener']/implements[@name='com.google.android.material.slider.BaseOnSliderTouchListener']" />
     <remove-node
-      path="/api/package[@name='com.google.android.material.slider']/interface[@name='BaseOnChangeListener']/method[@name='onValueChange']" />
+      path="/api/package[@name='com.google.android.material.slider']/interface[@name='RangeSlider.OnChangeListener']/implements[@name='com.google.android.material.slider.BaseOnChangeListener']" />
+    <remove-node
+      path="/api/package[@name='com.google.android.material.slider']/interface[@name='RangeSlider.OnSliderTouchListener']/implements[@name='com.google.android.material.slider.BaseOnSliderTouchListener']" />
 
-    <!-- Remove erased onStartTrackingTouch/onStopTrackingTouch from BaseOnSliderTouchListener
-         for the same ACW type erasure reason as above. -->
+    <!-- Remove the add/remove listener methods from BaseSlider to prevent implementor generation.
+         These methods reference the removed base interfaces as parameter types. We re-implement
+         them manually in Additions with typed overloads (Slider.IOnChangeListener, etc.) that
+         use the correct JNI signatures. This is a standard binding pattern: remove problematic
+         auto-generated method, replace with hand-written Additions code. -->
+    <remove-node
+      path="/api/package[@name='com.google.android.material.slider']/class[@name='BaseSlider']/method[@name='addOnChangeListener']" />
+    <remove-node
+      path="/api/package[@name='com.google.android.material.slider']/class[@name='BaseSlider']/method[@name='removeOnChangeListener']" />
     <remove-node
-      path="/api/package[@name='com.google.android.material.slider']/interface[@name='BaseOnSliderTouchListener']/method[@name='onStartTrackingTouch']" />
+      path="/api/package[@name='com.google.android.material.slider']/class[@name='BaseSlider']/method[@name='addOnSliderTouchListener']" />
     <remove-node
-      path="/api/package[@name='com.google.android.material.slider']/interface[@name='BaseOnSliderTouchListener']/method[@name='onStopTrackingTouch']" />
+      path="/api/package[@name='com.google.android.material.slider']/class[@name='BaseSlider']/method[@name='removeOnSliderTouchListener']" />
 
     <!-- Use discoverable .NET-style casing for newer multi-word Material package namespaces -->
     <attr path="/api/package[@name='com.google.android.material.listitem']" name="managedName">Google.Android.Material.ListItem</attr>

From 25d341485690769a673434d8e1042b671ce489ff Mon Sep 17 00:00:00 2001
From: sheiksyedm <sheiksyedm@syncfusion.com>
Date: Mon, 29 Jun 2026 16:52:43 +0530
Subject: [PATCH 2/2] Move GC.KeepAlive into finally for slider listener
 marshalling

Wrap the JNI invoke in try/finally so GC.KeepAlive runs even when the call
throws, preventing premature collection of the listener handle. Addresses PR
review feedback.
---
 .../Additions/SliderListenerMethods.cs        | 80 +++++++++++++++----
 1 file changed, 64 insertions(+), 16 deletions(-)

diff --git a/source/com.google.android.material/material/Additions/SliderListenerMethods.cs b/source/com.google.android.material/material/Additions/SliderListenerMethods.cs
index 497d0d657..638d4c4c1 100644
--- a/source/com.google.android.material/material/Additions/SliderListenerMethods.cs
+++ b/source/com.google.android.material/material/Additions/SliderListenerMethods.cs
@@ -22,8 +22,14 @@ public unsafe void AddOnChangeListener(Slider.IOnChangeListener listener)
         const string __id = "addOnChangeListener." + _addOnChangeListenerJni;
         Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
         __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
-        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
-        GC.KeepAlive(listener);
+        try
+        {
+            _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        }
+        finally
+        {
+            GC.KeepAlive(listener);
+        }
     }
 
     public unsafe void RemoveOnChangeListener(Slider.IOnChangeListener listener)
@@ -31,8 +37,14 @@ public unsafe void RemoveOnChangeListener(Slider.IOnChangeListener listener)
         const string __id = "removeOnChangeListener." + _removeOnChangeListenerJni;
         Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
         __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
-        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
-        GC.KeepAlive(listener);
+        try
+        {
+            _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        }
+        finally
+        {
+            GC.KeepAlive(listener);
+        }
     }
 
     public unsafe void AddOnSliderTouchListener(Slider.IOnSliderTouchListener listener)
@@ -40,8 +52,14 @@ public unsafe void AddOnSliderTouchListener(Slider.IOnSliderTouchListener listen
         const string __id = "addOnSliderTouchListener." + _addOnSliderTouchListenerJni;
         Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
         __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
-        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
-        GC.KeepAlive(listener);
+        try
+        {
+            _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        }
+        finally
+        {
+            GC.KeepAlive(listener);
+        }
     }
 
     public unsafe void RemoveOnSliderTouchListener(Slider.IOnSliderTouchListener listener)
@@ -49,8 +67,14 @@ public unsafe void RemoveOnSliderTouchListener(Slider.IOnSliderTouchListener lis
         const string __id = "removeOnSliderTouchListener." + _removeOnSliderTouchListenerJni;
         Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
         __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
-        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
-        GC.KeepAlive(listener);
+        try
+        {
+            _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        }
+        finally
+        {
+            GC.KeepAlive(listener);
+        }
     }
 }
 
@@ -66,8 +90,14 @@ public unsafe void AddOnChangeListener(RangeSlider.IOnChangeListener listener)
         const string __id = "addOnChangeListener." + _addOnChangeListenerJni;
         Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
         __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
-        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
-        GC.KeepAlive(listener);
+        try
+        {
+            _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        }
+        finally
+        {
+            GC.KeepAlive(listener);
+        }
     }
 
     public unsafe void RemoveOnChangeListener(RangeSlider.IOnChangeListener listener)
@@ -75,8 +105,14 @@ public unsafe void RemoveOnChangeListener(RangeSlider.IOnChangeListener listener
         const string __id = "removeOnChangeListener." + _removeOnChangeListenerJni;
         Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
         __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
-        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
-        GC.KeepAlive(listener);
+        try
+        {
+            _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        }
+        finally
+        {
+            GC.KeepAlive(listener);
+        }
     }
 
     public unsafe void AddOnSliderTouchListener(RangeSlider.IOnSliderTouchListener listener)
@@ -84,8 +120,14 @@ public unsafe void AddOnSliderTouchListener(RangeSlider.IOnSliderTouchListener l
         const string __id = "addOnSliderTouchListener." + _addOnSliderTouchListenerJni;
         Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
         __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
-        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
-        GC.KeepAlive(listener);
+        try
+        {
+            _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        }
+        finally
+        {
+            GC.KeepAlive(listener);
+        }
     }
 
     public unsafe void RemoveOnSliderTouchListener(RangeSlider.IOnSliderTouchListener listener)
@@ -93,8 +135,14 @@ public unsafe void RemoveOnSliderTouchListener(RangeSlider.IOnSliderTouchListene
         const string __id = "removeOnSliderTouchListener." + _removeOnSliderTouchListenerJni;
         Java.Interop.JniArgumentValue* __args = stackalloc Java.Interop.JniArgumentValue[1];
         __args[0] = new Java.Interop.JniArgumentValue(listener == null ? IntPtr.Zero : ((Java.Lang.Object)listener).Handle);
-        _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
-        GC.KeepAlive(listener);
+        try
+        {
+            _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
+        }
+        finally
+        {
+            GC.KeepAlive(listener);
+        }
     }
 }