How to delete cache using HanekeSwift Swift?

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

Have you tried: `Shared.imageCache.removeAll()`? – riik Jul 05 '16 at 14:39 — riik, Jul 05 '16 at 14:39

score 0 · Accepted Answer · answered Jul 06 '16 at 13:29

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.

NOTE: You could call the function in the viewdidload. That might be a better solution. — Cees, Jul 06 '16 at 13:35

How to delete cache using HanekeSwift Swift?

1 Answers1