UITableview load cell longtime Swift - Need advise tuning - uitableview

Question

Please kindly refer code in attach and refer in the image as well. I need your advise how can I make quicker for loading
http://imageshack.com/a/img901/7079/mOQkum.png
http://imageshack.com/a/img909/2775/E2zTKs.png
override func tableView(tableView: UITableView?, cellForRowAtIndexPath indexPath: NSIndexPath?) -> UITableViewCell {
let wishRow = self.wishDataList.objectAtIndex(indexPath!.row) as! NSMutableArray
println(userImageList.count)
switch (wishRow).count{
case 4:
let cell:WishHeaderTableViewCell = tableView!.dequeueReusableCellWithIdentifier("CellHeader", forIndexPath: indexPath!) as! WishHeaderTableViewCell
dispatch_async(dispatch_get_main_queue(), { () -> Void in
let dateFormatter = NSDateFormatter()
cell.LblCity.text = wishRow[1] as? String
cell.ImgAddWish.layer.cornerRadius = 20
cell.ImgAddWish.clipsToBounds = true
cell.ImgAddWish.autoresizesSubviews = false
// cell.ImageViewTripOwner.layer.cornerRadius = 20
// cell.ImageViewTripOwner.clipsToBounds = true
cell.ImageViewTripOwner.autoresizesSubviews = false
for object in self.userImageList{
if object[0] as? String == (wishRow[3] as? PFUser)?.objectId{
cell.ImageViewTripOwner.image = UIImage(data: (object[1] as! PFFile).getData()!)
//SharedFunction.imageResize(UIImage(data: (object[1] as PFFile).getData())!, sizeChange: CGSize(width: 40, height: 40))
}
}
})
return cell
default:
let cell:WishItemTableViewCell = tableView!.dequeueReusableCellWithIdentifier("CellItem", forIndexPath: indexPath!) as! WishItemTableViewCell
dispatch_async(dispatch_get_main_queue(), { () -> Void in
cell.LblItemName.text = wishRow[5] as? String
cell.ImgItem.image = wishRow[7] as? UIImage
//UIImage(data: (wishRow[7] as PFFile).getData())
//SharedFunction.imageResize(UIImage(data: (wishRow[7] as PFFile).getData())!, sizeChange: CGSize(width: 40, height: 40))
cell.ImgRequestorItem.layer.cornerRadius = 10
cell.ImgRequestorItem.clipsToBounds = true
cell.ImgRequestorItem.autoresizesSubviews = false
cell.ImgRequestorItem.backgroundColor = UIColor.whiteColor()
for object in self.userImageList{
if object[0] as? String == wishRow[8] as? String{
let realImage = UIImageView(frame: CGRect(x: 1.5, y: 1.5, width: 17, height: 17))
realImage.layer.cornerRadius = 8.5
realImage.clipsToBounds = true
dispatch_async(dispatch_get_main_queue(), { () -> Void in
realImage.image = UIImage(data: (object[1] as! PFFile).getData()!)
})
//SharedFunction.imageResize(UIImage(data: (object[1] as PFFile).getData())!, sizeChange: CGSize(width: 17, height: 17))
cell.ImgRequestorItem.addSubview(realImage)
}
}
cell.ImgBackgroundTick.layer.cornerRadius = 7.5
cell.ImgBackgroundTick.clipsToBounds = true
cell.ImgBackgroundTick.autoresizesSubviews = false
cell.ImgBackgroundTick.backgroundColor = UIColor.whiteColor()
let realImage = UIImageView(frame: CGRect(x: 1.5, y: 1.5, width: 12, height: 12))
realImage.layer.cornerRadius = 6
realImage.clipsToBounds = true
realImage.backgroundColor = UIColor(red: 0.450, green: 0.419, blue: 0.321 , alpha: 1)
realImage.image = UIImage(named: "ic_tick")
cell.ImgBackgroundTick.addSubview(realImage)
})
return cell
}
}

Answer 1

Wow, why are you using dispatch_async(dispatch_get_main_queue(), { () -> Void in in cell creation? You don't have to. Remove this method so the code should look like the following:
override func tableView(tableView: UITableView?, cellForRowAtIndexPath indexPath: NSIndexPath?) -> UITableViewCell {
let wishRow = self.wishDataList.objectAtIndex(indexPath!.row) as! NSMutableArray
println(userImageList.count)
switch (wishRow).count{
case 4:
let cell = tableView!.dequeueReusableCellWithIdentifier("CellHeader", forIndexPath: indexPath!) as! WishHeaderTableViewCell
let dateFormatter = NSDateFormatter()
cell.LblCity.text = wishRow[1] as? String
cell.ImgAddWish.layer.cornerRadius = 20
cell.ImgAddWish.clipsToBounds = true
cell.ImgAddWish.autoresizesSubviews = false
// cell.ImageViewTripOwner.layer.cornerRadius = 20
// cell.ImageViewTripOwner.clipsToBounds = true
cell.ImageViewTripOwner.autoresizesSubviews = false
for object in self.userImageList{
if object[0] as? String == (wishRow[3] as? PFUser)?.objectId{
cell.ImageViewTripOwner.image = UIImage(data: (object[1] as! PFFile).getData()!)
//SharedFunction.imageResize(UIImage(data: (object[1] as PFFile).getData())!, sizeChange: CGSize(width: 40, height: 40))
}
}
return cell
default:
let cell = tableView!.dequeueReusableCellWithIdentifier("CellItem", forIndexPath: indexPath!) as! WishItemTableViewCell
cell.LblItemName.text = wishRow[5] as? String
cell.ImgItem.image = wishRow[7] as? UIImage
//UIImage(data: (wishRow[7] as PFFile).getData())
//SharedFunction.imageResize(UIImage(data: (wishRow[7] as PFFile).getData())!, sizeChange: CGSize(width: 40, height: 40))
cell.ImgRequestorItem.layer.cornerRadius = 10
cell.ImgRequestorItem.clipsToBounds = true
cell.ImgRequestorItem.autoresizesSubviews = false
cell.ImgRequestorItem.backgroundColor = UIColor.whiteColor()
for object in self.userImageList{
if object[0] as? String == wishRow[8] as? String{
let realImage = UIImageView(frame: CGRect(x: 1.5, y: 1.5, width: 17, height: 17))
realImage.layer.cornerRadius = 8.5
realImage.clipsToBounds = true
dispatch_async(dispatch_get_main_queue(), { () -> Void in
realImage.image = UIImage(data: (object[1] as! PFFile).getData()!)
})
//SharedFunction.imageResize(UIImage(data: (object[1] as PFFile).getData())!, sizeChange: CGSize(width: 17, height: 17))
cell.ImgRequestorItem.addSubview(realImage)
}
}
cell.ImgBackgroundTick.layer.cornerRadius = 7.5
cell.ImgBackgroundTick.clipsToBounds = true
cell.ImgBackgroundTick.autoresizesSubviews = false
cell.ImgBackgroundTick.backgroundColor = UIColor.whiteColor()
let realImage = UIImageView(frame: CGRect(x: 1.5, y: 1.5, width: 12, height: 12))
realImage.layer.cornerRadius = 6
realImage.clipsToBounds = true
realImage.backgroundColor = UIColor(red: 0.450, green: 0.419, blue: 0.321 , alpha: 1)
realImage.image = UIImage(named: "ic_tick")
cell.ImgBackgroundTick.addSubview(realImage)
return cell
}}