How to delete cache using HanekeSwift Swift? - ios

Question

I am stuck with a problem. I want to populate a tableview with some text and a profile image that can change i use this function for it.
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell: CommonCellView!
cell = self.tableView.dequeueReusableCellWithIdentifier("CommonCellView") as! CommonCellView
cell.nameLabel.text = self.userCollection[indexPath.row].display_name
cell.companyLabel.text = self.userCollection[indexPath.row].user_organisation
cell.profileImage.hnk_setImageFromURL(NSURL(string: self.userCollection[indexPath.row].profile_picture)!)
self.makeImageViewCircular(cell.profileImage.layer, cornerRadius: cell.profileImage.frame.height)
cell.profileImage.clipsToBounds = true
return cell
}
nothing to suprising here. But when i change my own profile picture then i send it to the API and revist this function it shows the cached image. So i tought i might try something a bit diffent why not get all the images for every cell using Alamofire.
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell: CommonCellView!
cell = self.tableView.dequeueReusableCellWithIdentifier("CommonCellView") as! CommonCellView
cell.nameLabel.text = self.userCollection[indexPath.row].display_name
cell.companyLabel.text = self.userCollection[indexPath.row].user_organisation
cell.profileImage.image = UIImage()
//getting the cell image
Alamofire.request(.GET, self.userCollection[indexPath.row].profile_picture)
.response {(request, response, avatarData, error) in
let img = UIImage(data: avatarData!)
cell.profileImage.image = img
}
self.makeImageViewCircular(cell.profileImage.layer, cornerRadius: cell.profileImage.frame.height)
cell.profileImage.clipsToBounds = true
return cell
}
this works to a point where user scrolles very fast the image of a different user will be shown until the request gets fulfilled. Okey so make that happen somewere else and use an array for the images. I also tried that. but because its async the images would go into the array in the wrong order. So back to HanekeSwift. I read the documentation and saw i had a cache on disk but i could not clear or delete it.
to clear the cache i also tried:
NSURLCache.sharedURLCache().removeAllCachedResponses()
but i did not do a thing. it works in the Alamofire situation but its not a good solution either.
I want to use hanekeSwift because HanekeSwift is fast enough to get all the images. but i want to clear the cache everytime the contoller loads.
Any suggestions would be appreciated!
Cees

Answer 1

I found a the problem.
First i was running an older version of the pod. So after updating i could use the function.
Shared.imageCache.removeAll()
after you import haneke into the controller.
the final pice of code looked like this.
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell: CommonCellView!
cell = self.tableView.dequeueReusableCellWithIdentifier("CommonCellView") as! CommonCellView
cell.nameLabel.text = self.userCollection[indexPath.row].display_name
cell.companyLabel.text = self.userCollection[indexPath.row].user_organisation
cell.profileImage.image = UIImage()
//getting the cell image
cell.profileImage.hnk_setImageFromURL(NSURL(string: self.userCollection[indexPath.row].profile_picture)!)
//deleting it from cache
Shared.imageCache.removeAll()
self.makeImageViewCircular(cell.profileImage.layer, cornerRadius: cell.profileImage.frame.height)
cell.profileImage.clipsToBounds = true
return cell
}
it works now but removing the cache all the time an other cell gets filled seems a bit overkill.