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SDWebImage 5.0 Migration Guide

SDWebImage 5.0 is the latest major release of SDWebImage, a top library for downloading and caching images. As a major release, following Semantic Versioning conventions, 5.0 introduces several API-breaking changes with its new architecture.

.... RELEASE_SUMMARY ....

This guide is provided in order to ease the transition of existing applications using SDWebImage 4.X to the latest APIs, as well as explain the design and structure of new and changed functionality.

Requirements: iOS 8, Mac OS X 10.10, watchOS 2, tvOS 9, Xcode 8

SDWebImage 5.0 officially supports iOS 8 and later, Mac OS X 10.10 and later, watchOS 2 and later and tvOS 9 and later. It needs Xcode 8 or later to be able to build everything properly.

For targeting previous versions of the SDKs, check README - Backwards compatibility .

Migration

Swift

Objective-C

example

SDWebImage 4.x

[imageView sd_setImageWithURL:url placeholderImage:placeholderImage];

SDWebImage 5.x

[imageView sd_setImageWithURL:url placeholderImage:placeholderImage];

Entities

Added

...

SDImageCache

  • new initializer initWithNamespace:diskCacheDirectory:config:, is now the designated initializer
  • moved maxMemoryCost and maxMemoryCountLimit to SDImageCacheConfig
  • added SDImageCache diskImageDataExistsWithKey: synchronous method
  • addReadOnlyCachePath: removed, use additionalCachePathBlock instead
  • cachePathForKey:inPath: removed, use cachePathForKey: with NSString's path API instead.
  • defaultCachePathForKey: removed, use cachePathForKey: instead

SDImageCacheConfig

  • added diskCacheWritingOptions of type NSDataWritingOptions, defaults to NSDataWritingAtomic
  • added maxMemoryCost and maxMemoryCountLimit properties (used to be in SDImageCache)
  • shouldDecompressImages removed. Use SDImageCacheAvoidDecodeImage in cache options instead

SDWebImageManager

  • loadImageWithURL:options:progress:completed: changed the completed param requirement from nullable to nonnull
  • loadImageWithURL:options:progress:completed: return type id<SDWebImageOperation> changed to SDWebImageCombinedOperation *
  • shared() changed to shared
  • isRunning() changed to isRunning
  • imageCache changed from nullable to nonnull
  • imageDownloader renamed to imageLoader and changed from nullable to nonnull
  • cacheKeyFilter property type changed to id<SDWebImageCacheKeyFilter>, use the SDWebImageCacheKeyFilter cacheKeyFilterWithBlock:
  • cacheSerializer property type CHANGED to id<SDWebImageCacheSerializer>, use the SDWebImageCacheSerializer cacheSerializerWithBlock:
  • imageCache property type changed from SDImageCache * to id<SDImageCache>. The default value does not change.
  • initWithCache:downloader: 's cache arg type changed from SDImageCache * to id<SDImageCache>
  • initWithCache:downloader renamed to initWithCache:loader:
  • saveImageToCache:forURL: removed. Use SDImageCache storeImage:imageData:forKey:cacheType:completion: (or SDImageCache storeImage:forKey:toDisk:completion: if you use default cache class) with cacheKeyForURL: instead.
  • diskImageExistsForURL:completion: removed. Use SDImageCache containsImageForKey:cacheType:completion: (or SDImageCache diskImageExistsWithKey:completion: if you use default cache class) with cacheKeyForURL: instead.
  • cachedImageExistsForURL:completion removed. Use SDImageCache containsImageForKey:cacheType:completion: (or SDImageCache diskImageExistsWithKey:completion: and SDImageCache imageFromMemoryCacheForKey: if you use default cache class) with cacheKeyForURL: instead.

SDWebImageManagerDelegate

  • removed imageManager:transformDownloadedImage:forKey:

UIView and subclasses (UIImageView, UIButton, ...)

  • sd_internalSetImageWithURL:placeholderImage:options:operationKey:setImageBlock:progress:completed: renamed to UIView sd_internalSetImageWithURL:placeholderImage:options:context:setImageBlock:progress:completed: (The biggest changes is that the completion block type from SDExternalCompletionBlock to SDInternalCompletionBlock. Which allow advanced user to get more information of image loading process)
  • sd_internalSetImageWithURL:placeholderImage:options:operationKey:setImageBlock:progress:completed:context: removed
  • activity indicator refactoring - use sd_imageIndicator with SDWebImageActivityIndicator
    • sd_setShowActivityIndicatorView: removed
    • sd_setIndicatorStyle: removed
    • sd_showActivityIndicatorView removed
    • sd_addActivityIndicator: removed
    • sd_removeActivityIndicator: removed

UIImage

  • Renamed isGIF to sd_isAnimated, also NSImage isGIF renamed to NSImage sd_isAnimated
  • Renamed decodedImageWithImage: to sd_decodedImageWithImage:
  • Renamed decodedAndScaledDownImageWithImage: to sd_decodedAndScaledDownImageWithImage:
  • Removed sd_webpLoopCount since we have sd_imageLoopCount

UIImageView

  • Removed sd_setImageWithPreviousCachedImageWithURL:placeholderImage:options:progress:completed

SDWebImageDownloader

  • shared() changed to shared
  • setOperationClass available for Swift user
  • setSuspended(_:) changed to isSuspended property
  • shouldDecompressImages moved to SDWebImageDownloaderConfig.shouldDecompressImages
  • maxConcurrentDownloads moved to SDWebImageDownloaderConfig.maxConcurrentDownloads
  • downloadTimeout moved to SDWebImageDownloaderConfig.downloadTimeout
  • operationClass moved to SDWebImageDownloaderConfig.operationClass
  • executionOrder moved to SDWebImageDownloaderConfig.executionOrder
  • urlCredential moved to SDWebImageDownloaderConfig.urlCredential
  • username moved to SDWebImageDownloaderConfig.username
  • password moved to SDWebImageDownloaderConfig.password
  • initWithSessionConfiguration: removed, use initWithConfig:] with session configuration instead
  • createNewSessionWithConfiguration: removed, use initWithConfig:] with new session configuration instead. To modify shared downloader configuration, provide custom SDWebImageDownloaderConfig.defaultDownloaderConfig before it created.
  • headersFilter removed, use requestModifier instead
  • cancel: removed, use SDWebImageDownloadToken cancel instead
  • shouldDecompressImages removed. Use SDWebImageDownloaderAvoidDecodeImage in downloader options instead

SDWebImageDownloaderOperation

  • initWithRequest:inSession:options:context: is now the designated initializer
  • Removed shouldUseCredentialStorage property
  • SDWebImageDownloadOperationInterface protocol renamed to SDWebImageDownloadOperation. (SDWebImageDownloadOperationProtocol for Swift)
  • expectedSize removed, use response.expectedContentLength instead
  • shouldDecompressImages removed. Use SDWebImageDownloaderAvoidDecodeImage in downloader options instead.

SDWebImagePrefetcher

  • prefetchURLs: and prefetchURLs:progress:completed: return types changed from void to SDWebImagePrefetchToken
  • prefetcherQueue property renamed to delegateQueue
  • maxConcurrentDownloads property removed, use SDWebImageManager.downloader config instead

SDWebImageCoder

  • SDCGColorSpaceGetDeviceRGB() moved to SDWebImageCoderHelper colorSpaceGetDeviceRGB
  • SDCGImageRefContainsAlpha(), moved to SDWebImageCoderHelper imageRefContainsAlpha:
  • decodedImageWithData: replaced with decodedImageWithData:options:
  • encodedDataWithImage:format: replaced with encodedDataWithImage:format:options
  • init method from SDWebImageProgressiveCoder changed to initIncrementalWithOptions:
  • incrementalDecodedImageWithData:finished replaced with updateIncrementalData:finished and incrementalDecodedImageWithOptions:
  • removed decompressedImage:data:options

SDWebImageCodersManager

  • sharedInstance() changed to shared

SDWebImageImageIOCoder

  • shared() changed to shared

SDWebImageGIFCoder

  • shared() changed to shared

SDWebImageWebPCoder

  • shared() changed to shared

NSData-ImageContentType

  • sd_UTTypeFromSDImageFormat return CFString instead of Unmanaged<CFString>

UIButton-WebCache

  • sd_currentImageURL() changed to sd_currentImageURL

NSButton-WebCache

  • sd_currentImageURL() changed to sd_currentImageURL
  • sd_currentAlternateImageURL() changed to sd_currentAlternateImageURL

Constants

  • SDWebImageInternalSetImageGroupKey renamed to SDWebImageContextSetImageGroup
  • SDWebImageExternalCustomManagerKey renamed to SDWebImageContextCustomManager