刚刚更新pods 编译程序,突然发现SDWebImage报错
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了解到SDWebImage4.0 更换了不少方法，还增加了几个类，索性都研究一下
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pod 更新SDWebImage版本为4.1.0
38BDB086-B1E2-469E-8681-415EF14DC2BF.png SDWebImage4.0 播放GIF 需要使用 FLAnimatedImage
如果使用了用pods 除了pod 'SDWebImage' 还要添加下面俩个
pod 'SDWebImage/GIF'
pod 'FLAnimatedImage'
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//使用很简单
#import <FLAnimatedImageView.h>
#import <FLAnimatedImageView+WebCache.h>
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];
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];
}
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
- 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) {}];
- 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;
- 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) {
}];
- 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];
}
- 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;
- 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
