Hi all i am a newbie in IOS Development and i have a UICollection where i am loading images with SDWebImageCache. The problem is my UICollectionview cell feels like jerking or shivering while scrolling fast. Below I post my code for loading images with SDWebImageCache
[_homeCellImage sd_setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@%@",[dictionary objectForKey:@"user_image"],[QPCommonClass cropImageWithWidth:500 andHeight:500]]] placeholderImage:[UIImage imageNamed:@"defaultIcon"]];
[_qpQuestionImage sd_setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@%@",[dictionary objectForKey:@"image"],[QPCommonClass cropImageWithWidth:1400 andHeight:1200]]] placeholderImage:[UIImage imageNamed:@"question"] options:0 completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL){
[_qpHomeActivityIndicator setHidden:YES];
[_qpHomeActivityIndicator stopAnimating];
}];
where _homeCellImage & _qpQuestionImage are UIImageViews
Now when you set the image via cellForItem, the image can be loaded directly from cache, and it should be a lot smoother.
Try to do like this--
[_homeCellImage setShowActivityIndicatorView:YES];
[_homeCellImage setIndicatorStyle:UIActivityIndicatorViewStyleGray];
[_homeCellImage sd_setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@%@",[dictionary objectForKey:@"user_image"],[QPCommonClass cropImageWithWidth:500 andHeight:500]]] placeholderImage:[UIImage imageNamed:@"defaultIcon"] options:SDWebImageRefreshCached];
[_qpQuestionImage setShowActivityIndicatorView:YES];
[_qpQuestionImage setIndicatorStyle:UIActivityIndicatorViewStyleGray];
[_qpQuestionImage sd_setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@%@",[dictionary objectForKey:@"image"],[QPCommonClass cropImageWithWidth:1400 andHeight:1200]]] placeholderImage:[UIImage imageNamed:@"question"] options:SDWebImageRefreshCached];
You have to add these 2 lines after your dequeue.
cell.layer.shouldRasterize = YES;
cell.layer.rasterizationScale = [UIScreen mainScreen].scale;
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.