@@ -13,6 +13,7 @@ class SearchResultsViewController: UIViewController, UITableViewDataSource, UITa
1313 @IBOutlet var appsTableView : UITableView ?
1414 var tableData = [ ]
1515 var api = APIController ( )
16+ var imageCache = [ String : UIImage] ( )
1617 let kCellIdentifier : String = " SearchResultCell "
1718
1819 override func viewDidLoad( ) {
@@ -31,23 +32,62 @@ class SearchResultsViewController: UIViewController, UITableViewDataSource, UITa
3132 }
3233
3334 func tableView( tableView: UITableView , cellForRowAtIndexPath indexPath: NSIndexPath ) -> UITableViewCell {
35+
3436 let cell : UITableViewCell = tableView. dequeueReusableCellWithIdentifier ( kCellIdentifier) as UITableViewCell
3537
36- let rowData : NSDictionary = self . tableData [ indexPath. row] as NSDictionary
38+ var rowData : NSDictionary = self . tableData [ indexPath. row] as NSDictionary
3739
38- cell. textLabel? . text = rowData [ " trackName " ] as? String
40+ // Add a check to make sure this exists
41+ let cellText : String ? = rowData [ " trackName " ] as? String
42+ cell. textLabel? . text = cellText
43+ cell. imageView? . image = UIImage ( named: " Blank52 " )
3944
40- // Grab the artworkUrl60 key to get an image URL for the app's thumbnail
41- let urlString : NSString = rowData [ " artworkUrl60 " ] as NSString
42- let imgURL : NSURL = NSURL ( string: urlString)
43-
44- // Download an NSData representation of the image at the URL
45- let imgData : NSData = NSData ( contentsOfURL: imgURL)
46- cell. imageView? . image = UIImage ( data: imgData)
4745
4846 // Get the formatted price string for display in the subtitle
4947 let formattedPrice : NSString = rowData [ " formattedPrice " ] as NSString
5048
49+ // Jump in to a background thread to get the image for this item
50+
51+ // Grab the artworkUrl60 key to get an image URL for the app's thumbnail
52+ let urlString = rowData [ " artworkUrl60 " ] as String
53+
54+ // Check our image cache for the existing key. This is just a dictionary of UIImages
55+ //var image: UIImage? = self.imageCache.valueForKey(urlString) as? UIImage
56+ var image = self . imageCache [ urlString]
57+
58+
59+ if ( image == nil ) {
60+ // If the image does not exist, we need to download it
61+ var imgURL : NSURL = NSURL ( string: urlString)
62+
63+ // Download an NSData representation of the image at the URL
64+ let request : NSURLRequest = NSURLRequest ( URL: imgURL)
65+ NSURLConnection . sendAsynchronousRequest ( request, queue: NSOperationQueue . mainQueue ( ) , completionHandler: { ( response: NSURLResponse!, data: NSData!, error: NSError!) - > Void in
66+ if error == nil {
67+ image = UIImage ( data: data)
68+
69+ // Store the image in to our cache
70+ self . imageCache [ urlString] = image
71+ dispatch_async ( dispatch_get_main_queue ( ) , {
72+ if let cellToUpdate = tableView. cellForRowAtIndexPath ( indexPath) {
73+ cellToUpdate. imageView? . image = image
74+ }
75+ } )
76+ }
77+ else {
78+ println ( " Error: \( error. localizedDescription) " )
79+ }
80+ } )
81+
82+ }
83+ else {
84+ dispatch_async ( dispatch_get_main_queue ( ) , {
85+ if let cellToUpdate = tableView. cellForRowAtIndexPath ( indexPath) {
86+ cellToUpdate. imageView? . image = image
87+ }
88+ } )
89+ }
90+
5191 cell. detailTextLabel? . text = formattedPrice
5292
5393 return cell
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