Remove the unused intrinsicContentSize for SDAnimatedImageView. This is original from FL and it's proved to be a of FL itself, but not what UIKit/AppKit behavior.

SDWebImage/SDAnimatedImageView.m

@@ -228,8 +228,6 @@ static NSUInteger SDDeviceFreeMemory() {
         
         // Ensure disabled highlighting; it's not supported (see `-setHighlighted:`).
         super.highlighted = NO;
-        // UIImageView seems to bypass some accessors when calculating its intrinsic content size, so this ensures its intrinsic content size comes from the animated image.
-        [self invalidateIntrinsicContentSize];
         
         // Calculate max buffer size
         [self calculateMaxBufferCount];
@@ -429,23 +427,6 @@ static NSUInteger SDDeviceFreeMemory() {
     }
 }
 
-#pragma mark Auto Layout
-
-- (CGSize)intrinsicContentSize
-{
-    // Default to let UIImageView handle the sizing of its image, and anything else it might consider.
-    CGSize intrinsicContentSize = [super intrinsicContentSize];
-    
-    // If we have have an animated image, use its image size.
-    // UIImageView's intrinsic content size seems to be the size of its image. The obvious approach, simply calling `-invalidateIntrinsicContentSize` when setting an animated image, results in UIImageView steadfastly returning `{UIViewNoIntrinsicMetric, UIViewNoIntrinsicMetric}` for its intrinsicContentSize.
-    // (Perhaps UIImageView bypasses its `-image` getter in its implementation of `-intrinsicContentSize`, as `-image` is not called after calling `-invalidateIntrinsicContentSize`.)
-    if (self.animatedImage) {
-        intrinsicContentSize = self.image.size;
-    }
-    
-    return intrinsicContentSize;
-}
-
 #pragma mark - UIImageView Method Overrides
 #pragma mark Image Data
 

Tests/Tests/SDAnimatedImageTest.m

@@ -129,6 +129,14 @@ static const NSUInteger kTestGIFFrameCount = 5; // local TestImage.gif loop coun
     expect(image1.animatedImageFrameCount).equal(image2.animatedImageFrameCount);
 }
 
+- (void)test11AnimatedImageViewIntrinsicContentSize {
+    // Test that SDAnimatedImageView.intrinsicContentSize return the correct value of image size
+    SDAnimatedImageView *imageView = [SDAnimatedImageView new];
+    SDAnimatedImage *image = [SDAnimatedImage imageWithData:[self testAPNGPData]];
+    imageView.image = image;
+    expect(imageView.intrinsicContentSize).equal(image.size);
+}
+
 - (void)test20AnimatedImageViewRendering {
     XCTestExpectation *expectation = [self expectationWithDescription:@"test SDAnimatedImageView rendering"];
     SDAnimatedImageView *imageView = [[SDAnimatedImageView alloc] init];