fix(ios): prevent crash when view is disposed during async asset loading

Keep RiveFile alive during async asset loading operations
to prevent factory invalidation. The cachedRiveFile
reference is retained until the next load or view
deallocation, ensuring the RiveFactory remains valid for
background decode operations.

Author: mfazekas

ios/RiveReactNativeView.swift

@@ -30,6 +30,7 @@ class RiveReactNativeView: RCTView, RivePlayerDelegate, RiveStateMachineDelegate
     var viewModel: RiveViewModel?
     var dataBindingViewModelInstance: RiveDataBindingViewModel.Instance?
     var cachedRiveFactory: RiveFactory?
+    var cachedRiveFile: RiveFile?
     var previousReferencedAssets: NSDictionary?
     var cachedFileAssets: [String: RiveFileAsset] = [:]
 
@@ -158,6 +159,10 @@ class RiveReactNativeView: RCTView, RivePlayerDelegate, RiveStateMachineDelegate
     private func cleanupFileAssetCache() {
         cachedFileAssets.removeAll()
         cachedRiveFactory = nil
+        // Note: We intentionally don't clear cachedRiveFile here to prevent a race condition
+        // where async asset loaders (both custom and CDN) may still be using the factory
+        // tied to the RiveFile. The cachedRiveFile will be replaced on next load or
+        // released when this view is deallocated.
     }
 
     override func layoutSubviews() {
@@ -331,6 +336,7 @@ class RiveReactNativeView: RCTView, RivePlayerDelegate, RiveStateMachineDelegate
             } else {
                 updatedViewModel = RiveViewModel(fileName: name, fit: convertFit(fit), alignment: convertAlignment(alignment), autoPlay: autoplay, artboardName: artboardName, customLoader: customLoader)
             }
+            cachedRiveFile = updatedViewModel.riveModel?.riveFile
             warnForUnusedAssets()
 
             updatedViewModel.layoutScaleFactor = layoutScaleFactor.doubleValue
@@ -355,6 +361,7 @@ class RiveReactNativeView: RCTView, RivePlayerDelegate, RiveStateMachineDelegate
         }
         do {
           let riveFile = try RiveFile(data: data, loadCdn: true, customAssetLoader: customLoader)
+          self.cachedRiveFile = riveFile
           let riveModel = RiveModel(riveFile: riveFile)
           let fit = self.convertFit(self.fit)
           let alignment = self.convertAlignment(self.alignment)
@@ -514,25 +521,28 @@ class RiveReactNativeView: RCTView, RivePlayerDelegate, RiveStateMachineDelegate
         if (data.isEmpty == true) {
             return;
         }
+        let riveFileRef = cachedRiveFile
         DispatchQueue.global(qos: .background).async {
-            switch asset {
-            case let imageAsset as RiveImageAsset:
-                let decodedImage = factory.decodeImage(data)
-                DispatchQueue.main.async {
-                    imageAsset.renderImage(decodedImage)
-                }
-            case let fontAsset as RiveFontAsset:
-                let decodedFont = factory.decodeFont(data)
-                DispatchQueue.main.async {
-                    fontAsset.font(decodedFont)
-                }
-            case let audioAsset as RiveAudioAsset:
-                guard let decodedAudio = factory.decodeAudio(data) else { return }
-                DispatchQueue.main.async {
-                    audioAsset.audio(decodedAudio)
+            withExtendedLifetime(riveFileRef) {
+                switch asset {
+                case let imageAsset as RiveImageAsset:
+                    let decodedImage = factory.decodeImage(data)
+                    DispatchQueue.main.async {
+                        imageAsset.renderImage(decodedImage)
+                    }
+                case let fontAsset as RiveFontAsset:
+                    let decodedFont = factory.decodeFont(data)
+                    DispatchQueue.main.async {
+                        fontAsset.font(decodedFont)
+                    }
+                case let audioAsset as RiveAudioAsset:
+                    guard let decodedAudio = factory.decodeAudio(data) else { return }
+                    DispatchQueue.main.async {
+                        audioAsset.audio(decodedAudio)
+                    }
+                default:
+                    break
                 }
-            default:
-                break
             }
         }
     }