SD

-(void)dealloc{
SDImageCache  *cache = [SDImageCache shareImageCache];
cache.shouldDecompressImages = YES;
SDWebImageDownloader *downloader = [SDWebImageDownloader shareDownloader];
downloder.shouleDecompressImages = YES;
}




#pragma mark --- 高分辨率的图片禁止图片解压缩操作
    [[SDImageCache sharedImageCache] setShouldDecompressImages:NO];
    [[SDWebImageDownloader sharedDownloader] setShouldDecompressImages:NO];
    
    SDImageCache *cache = [SDImageCache sharedImageCache];
    cache.shouldDecompressImages = NO;
    
    SDWebImageDownloader *downloder = [SDWebImageDownloader sharedDownloader];
    downloder.shouldDecompressImages = NO;