every time loading in tableview cell?

[bintu1234]

Hi I am working with the RJImage Loader using podfile.working fine. I am using in Tableview Cell for image loading but when i scroll then every time it is showing loader and tableview not moving smoothly
below code i am using in cellForRowAtIndexPath

_imageview =cell.mediaImageView;
[_imageview startLoaderWithTintColor:[UIColor redColor]];
// [self indicatore];
__weak typeof(self)weakSelf = self;
urlString = messageString;
[weakSelf.imageview sd_setImageWithURL:[NSURL URLWithString:urlString] placeholderImage:nil options:SDWebImageRetryFailed | SDWebImageRefreshCached progress:^(NSInteger receivedSize, NSInteger expectedSize) {
[weakSelf.imageview updateImageDownloadProgress:(CGFloat)receivedSize/expectedSize];
} completed:^(UIImage image, NSError error, SDImageCacheType cacheType, NSURL *imageURL) {
[weakSelf.imageview reveal];
}];

where i am missing please help me