Merge pull request #165 from SDWebImage/update_webimage_defaults_animating

Update the WebImage to defaults animatable

Author: dreampiggy

README.md

@@ -57,6 +57,27 @@ All issue reports, feature requests, contributions, and GitHub stars are welcome
 + watchOS 6+
 + Swift 5.1+
 
+## SwiftUI 2.0 Compatibility
+
+iOS 14(macOS 11) introduce the SwiftUI 2.0, which keep the most API compatible, but changes many internal behaviors, which breaks the SDWebImageSwiftUI's function.
+
+From v1.6.0, we adopt SwiftUI 2.0 and iOS 14(macOS 11)'s behavior.You can use `WebImage` and `AnimatedImage` inside the new `LazyVStack`.
+
+```swift
+var body: some View {
+    ScrollView {
+        LazyVStack {
+            ForEach(urls, id: \.self) { url in
+                AnimatedImage(url: url)
+            }
+        }
+    }
+}
+```
+
+Note: However, many differences behavior between iOS 13/14's is hard to fixup. Due to maintain issue, in the future v2.0.0, we will drop the iOS 13 supports and always match SwiftUI 2.0's behavior.
+
+
 ## Installation
 
 #### Swift Package Manager
@@ -128,9 +149,7 @@ var body: some View {
 }
 ```
 
-Note: This `WebImage` using `Image` for internal implementation, which is the best compatible for SwiftUI layout and animation system. But unlike SwiftUI's `Image` which does not support animated image or vector image, `WebImage` supports animated image as well.
-
-Note: The `WebImage` animation provide common use case, so it's still recommend to use `AnimatedImage` for advanced controls like progressive animation rendering.
+Note: This `WebImage` using `Image` for internal implementation, which is the best compatible for SwiftUI layout and animation system. But unlike SwiftUI's `Image` which does not support animated image or vector image, `WebImage` supports animated image as well (by defaults from v1.6.0)
 
 ```swift
 @State var isAnimating: Bool = true
@@ -143,6 +162,8 @@ var body: some View {
 }
 ```
 
+Note: The `WebImage` animation provide common use case, so it's still recommend to use `AnimatedImage` for advanced controls like progressive animation rendering, or vector image rendering. In a word, `WebImage` can render animated image, but not always the best choice.
+
 ### Using `AnimatedImage` to play animation
 
 - [x] Supports network image as well as local data and bundle image

SDWebImageSwiftUI/Classes/WebImage.swift

@@ -34,7 +34,7 @@ public struct WebImage : View {
     /// - Parameter options: The options to use when downloading the image. See `SDWebImageOptions` for the possible values.
     /// - Parameter context: A context contains different options to perform specify changes or processes, see `SDWebImageContextOption`. This hold the extra objects which `options` enum can not hold.
     public init(url: URL?, options: SDWebImageOptions = [], context: [SDWebImageContextOption : Any]? = nil) {
-        self.init(url: url, options: options, context: context, isAnimating: .constant(false))
+        self.init(url: url, options: options, context: context, isAnimating: .constant(true))
     }
 
     /// Create a web image with url, placeholder, custom options and context. Optional can support animated image using Binding.