YYWebImage清除缓存

YYImageCache *cache = [YYWebImageManager sharedManager].cache;
   
   float tmpSize =  cache.diskCache.totalCost / 1024 /1024;
   
   NSString *clearCacheName = tmpSize >= 1 ? [NSString stringWithFormat:@"清理缓存(%.2f M)",tmpSize] : [NSString stringWithFormat:@"清理缓存(%.2f K)",tmpSize * 1024];
   [cache.memoryCache removeAllObjects];
   [cache.diskCache removeAllObjects];
    NSLog(@"%l@",[NSString stringWithFormat:@"已%@",clearCacheName]);