刚刚更新pods 编译程序,突然发现SDWebImage报错

• pod 更新SDWebImage版本为4.1.0

查找是否有对应缓存的 方法 由返回BOOL 值 换成Block回调中参数返回BOOL值

//老版本BOOL isInCache =[[SDImageCache sharedImageCache]diskImageExistsWithKey:@""];// 4.0 版本 [[SDImageCache sharedImageCache]diskImageExistsWithKey:@"" completion:^(BOOL isInCache) {}];复制代码

删除沙盒图片 只有 带Block回调的了

老版本- (void)clearMemory;- (void)clearDiskOnCompletion:(SDWebImageNoParamsBlock)completion;- (void)clearDisk;4.0 版本- (void)clearMemory;- (void)clearDiskOnCompletion:(nullable SDWebImageNoParamsBlock)completion;复制代码

下载图片的方法 方法名字由downloadImageWithURL 换成loadImageWithURL

1.在加载进度的Block回调里 增加了targetURL （图片URL的参数） 2.在下载完成的Block回调里 增加了 data （返回二进制）

//老版本 [[SDWebImageManager sharedManager]downloadImageWithURL:[NSURL URLWithString:@""] options:0 progress:^(NSInteger receivedSize, NSInteger expectedSize) { } completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {}];//4.0 版本[[SDWebImageManager sharedManager] loadImageWithURL:[NSURL URLWithString:[imageArray objectAtIndex:i]] options:0 progress:^(NSInteger receivedSize, NSInteger expectedSize, NSURL * _Nullable targetURL) { } completed:^(UIImage * _Nullable image, NSData * _Nullable data, NSError * _Nullable error, SDImageCacheType cacheType, BOOL finished, NSURL * _Nullable imageURL) {}];复制代码

UIImageView+WebCache UIButton+WebCache等category 的方法并没改变

只是里面的图片替换逻辑 移动到新增的UIView +WebCache 里了

- (void)sd_setImageWithURL:(nullable NSURL *)url          placeholderImage:(nullable UIImage *)placeholder                   options:(SDWebImageOptions)options                  progress:(nullable SDWebImageDownloaderProgressBlock)progressBlock                 completed:(nullable SDExternalCompletionBlock)completedBlock {    [self sd_internalSetImageWithURL:url                    placeholderImage:placeholder                             options:options                        operationKey:nil                       setImageBlock:nil                            progress:progressBlock                           completed:completedBlock];}复制代码

增加了个UIView +WebCache category

此类作用是把SDWebImage 所有的 category 如 UIButton+WebCache，UIImageView+WebCache 等分类的图片替换的逻辑 封装到 一起使用。

- (void)sd_internalSetImageWithURL:(nullable NSURL *)url                  placeholderImage:(nullable UIImage *)placeholder                           options:(SDWebImageOptions)options                      operationKey:(nullable NSString *)operationKey                     setImageBlock:(nullable SDSetImageBlock)setImageBlock                          progress:(nullable SDWebImageDownloaderProgressBlock)progressBlock                         completed:(nullable SDExternalCompletionBlock)completedBlock;复制代码

SDWebImage4.0 播放GIF 需要使用

如果使用了用pods 除了pod 'SDWebImage' 还要添加下面俩个 pod 'SDWebImage/GIF' pod 'FLAnimatedImage'

#import 
    
     #import 
     
          FLAnimatedImageView *FLView = [[FLAnimatedImageView alloc]init];    FLView.frame = CGRectMake(0, 64, SCREEN_WIDTH, 280);    [FLView sd_setImageWithURL:[NSURL URLWithString:IMAGE2] placeholderImage:[UIImage imageNamed:[NSBundle zb_placeholder]]];    [self.view addSubview:FLView];复制代码
     
    

FLAnimatedImageView+WebCache 内部实行也很简单明了， 依然调用UIView +WebCache 的方法 在设置图片的Block里 对回调里的参数imageData 进行判断如果是GIF 就使用FLAnimatedImage 的animatedImageWithGIFData方法进行赋值

- (void)sd_setImageWithURL:(nullable NSURL *)url          placeholderImage:(nullable UIImage *)placeholder                   options:(SDWebImageOptions)options                  progress:(nullable SDWebImageDownloaderProgressBlock)progressBlock                 completed:(nullable SDExternalCompletionBlock)completedBlock {    __weak typeof(self)weakSelf = self;    [self sd_internalSetImageWithURL:url                    placeholderImage:placeholder                             options:options                        operationKey:nil                       setImageBlock:^(UIImage *image, NSData *imageData) {                           SDImageFormat imageFormat = [NSData sd_imageFormatForImageData:imageData];                           if (imageFormat == SDImageFormatGIF) {                               weakSelf.animatedImage = [FLAnimatedImage animatedImageWithGIFData:imageData];                               weakSelf.image = nil;                           } else {                               weakSelf.image = image;                               weakSelf.animatedImage = nil;                           }                       }                            progress:progressBlock                           completed:completedBlock];}复制代码

FLAnimatedImageView本身就是UIImageView的封装 ，用起来真的很快，配合SDWebImage加载GIF 都感觉不到下载的过程，以为是本地加载的一样 .在正常UITableView 列表试了下加载普通图片更是小意思。完全可以替换UIImageView

增加了一个SDImageCacheConfig 类 把之前在SDImageCache 类里初始化的几个属性拿出来单独封装，使其他类也能使用

增加了 NSImage+WebCache category macOS 平台开发时使用的一个 NSImage 的一个分类 不用太了解

我也只是 粗略的看了看 ，具体还有哪些改变，漏掉的，以后再补充