Merge pull request #309 from SDWebImage/bugfix/animatedimage

Fix the assert then using Data/Name in AnimatedImage

Author: dreampiggy

Example/SDWebImageSwiftUIDemo/AppDelegate.swift

@@ -9,7 +9,9 @@
 import UIKit
 import SDWebImage
 import SDWebImageWebPCoder
+#if canImport(SDWebImageAVIFCoder)
 import SDWebImageAVIFCoder
+#endif
 import SDWebImageSVGCoder
 import SDWebImagePDFCoder
 
@@ -22,7 +24,9 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         // Override point for customization after application launch.
         // Add WebP/SVG/PDF support
         SDImageCodersManager.shared.addCoder(SDImageWebPCoder.shared)
+        #if canImport(SDWebImageAVIFCoder)
         SDImageCodersManager.shared.addCoder(SDImageAVIFCoder.shared)
+        #endif
         SDImageCodersManager.shared.addCoder(SDImageSVGCoder.shared)
         SDImageCodersManager.shared.addCoder(SDImagePDFCoder.shared)
         // Dynamic check to support vector format for both WebImage/AnimatedImage

Example/SDWebImageSwiftUIDemo/ContentView.swift

@@ -34,6 +34,12 @@ struct ContentView3: View {
         VStack {
             Text("\(animated ? "AnimatedImage" : "WebImage")")
             Spacer()
+            #if os(watchOS)
+            WebImage(url: url)
+                .resizable()
+                .scaledToFit()
+                .frame(width: 100, height: 100)
+            #else
             if animated {
                 AnimatedImage(url: url)
                     .resizable()
@@ -45,6 +51,7 @@ struct ContentView3: View {
                     .scaledToFit()
                     .frame(width: 100, height: 100)
             }
+            #endif
             Button("Toggle \(isOn ? "nil" : "valid") URL") {
                 isOn.toggle()
             }

SDWebImageSwiftUI/Classes/AnimatedImage.swift

@@ -286,7 +286,10 @@ public struct AnimatedImage : PlatformViewRepresentable {
         return view
     }
 
-    private func updateViewForName(_ name: String, view: AnimatedImageViewWrapper, context: Context) {
+    private func updateViewForName(_ name: String?, view: AnimatedImageViewWrapper, context: Context) {
+        guard let name = name, name != context.coordinator.imageLoading.imageName else {
+            return
+        }
         var image: PlatformImage?
         #if os(macOS)
         image = SDAnimatedImage(named: name, in: imageModel.bundle)
@@ -306,7 +309,10 @@ public struct AnimatedImage : PlatformViewRepresentable {
         view.wrapped.image = image
     }
 
-    private func updateViewForData(_ data: Data, view: AnimatedImageViewWrapper, context: Context) {
+    private func updateViewForData(_ data: Data?, view: AnimatedImageViewWrapper, context: Context) {
+        guard let data = data, data != context.coordinator.imageLoading.imageData else {
+            return
+        }
         var image: PlatformImage? = SDAnimatedImage(data: data, scale: imageModel.scale)
         if image == nil {
             // For static image, use UIImage as defaults
@@ -344,14 +350,15 @@ public struct AnimatedImage : PlatformViewRepresentable {
         // Refresh image, imageModel is the Source of Truth, switch the type
         // Although we have Source of Truth, we can check the previous value, to avoid re-generate SDAnimatedImage, which is performance-cost.
         let kind = imageModel.kind
-        if kind == .name, let name = imageModel.name, name != context.coordinator.imageLoading.imageName {
-            updateViewForName(name, view: view, context: context)
-        } else if kind == .data, let data = imageModel.data, data != context.coordinator.imageLoading.imageData {
-            updateViewForData(data, view: view, context: context)
-        } else if kind == .url {
+        switch kind {
+        case .name:
+            updateViewForName(imageModel.name, view: view, context: context)
+        case .data:
+            updateViewForData(imageModel.data, view: view, context: context)
+        case .url:
             updateViewForURL(imageModel.url, view: view, context: context)
-        } else {
-            fatalError("Unsupported model kind: \(kind)")
+        case .unknown:
+            break // impossible
         }
 
         #if os(macOS)