Skip to main content

Check Application version | iOS | Swift

Show the alert within application for update the application.

func checkApplicationVersion(){
        let urlString = String(format: "http://itunes.apple.com/lookup?id=%@",AppleAppID)
        let url = NSURL(string: urlString)
        let urlRequest = NSURLRequest(URL: url!)
        NSURLConnection.sendAsynchronousRequest(urlRequest, queue: NSOperationQueue.mainQueue()) { (response, data, error) -> Void in
            if (error == nil)
            {
                do {
                    let appMetadataDictionary : NSDictionary = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers) as! NSDictionary
                    let resultsArray : NSArray = appMetadataDictionary.objectForKey("results") as! NSArray
                    let resultsDic : NSDictionary = resultsArray.firstObject as! NSDictionary

                    let iTunesVersion : String = resultsDic.objectForKey("version") as! String
                    let appVersionString : String = NSBundle.mainBundle().objectForInfoDictionaryKey("CFBundleShortVersionString") as! String
                    
                    if(appVersionString.compare(iTunesVersion) != NSComparisonResult.OrderedSame// new version exists
                    {
                        let message = String(format:"New version %@ available. Update required.",iTunesVersion)
                        let alert = UIAlertController(title: KEY_AppAlertTitle, message: message, preferredStyle: UIAlertControllerStyle.Alert)
                        alert.addAction(UIAlertAction(title: "Update", style: .Default, handler: { (action) -> Void in
                            let iTunesLink : String = String(format:"itms://itunes.apple.com/us/app/apple-store/id%@?mt=8",AppleAppID)
                            UIApplication.sharedApplication().openURL(NSURL(string: iTunesLink)!)
                        }))
                        alert.addAction(UIAlertAction(title: "Cancel", style: .Cancel, handler: nil))
                        self.window?.rootViewController?.presentViewController(alert, animated: true, completion: nil)
                    }
                } catch let error as NSError {
                    print("error while lookup:- \(error)")
                }
            }else{
                    print("error occurred communicating with iTunes:- \(error)")
            }
        }

    }

Comments

Popular posts from this blog

Play youtube video in iOS app

Youtube video can be played in iOS app using webview. MPMoviePlayerController is not able to open youtube video automatically. Integrate the below script to show thumbnail, clicking on it the video will play in full screen.


NSString *url = @"https://www.youtube.com/embed/8aMHGC6A5zc"; NSString* embedHTML = @"\     <html><head>\     <style type=\"text/css\">\     body {\     background-color: transparent;\     color: white;\     }\     </style>\     </head><body style=\"margin:0\">\     <iframe id=\"yt\" src=\"%@\" type=\"application/x-shockwave-flash\" \     width=\"%0.0f\" height=\"%0.0f\" frameborder=\"0\" feature=player_detailpage allowfullscreen></iframe>\     </body></html>"; NSString* html = [NSStringstringWithFormat:embedHTML, url, self.view.frame.size.width, 200.0];
    [webviewloadHTMLString:html baseURL:nil];


///*******************A…

Disabling print for Production In Swift Project

You'll need to set up a compiler flag to use the Swift preprocessor - go to the Swift Compiler - Custom Flags section of Build Settings to set up a -D DEBUG flag:



Then in your code you can define a DLog() function and only print your message if the DEBUG flag is set:
func DLog(message: String, function: String = __FUNCTION__) { #if DEBUG     println("\(function): \(message)") #endif }

Collection view inside table view with NO vertical scrolling

UICollectionView inside a UITableViewCell — dynamic height?
Given the following structure: TableViewTableViewCellCollectionViewCollectionViewCellCollectionViewCellCollectionViewCell[...variable number of cells or different cell sizes]
The solution is to tell auto layout to compute first the collectionViewCell sizes, then the collection view contentSize, and use it as the size of your cell. This is the UIView method that "does the magic": -(void)systemLayoutSizeFittingSize:(CGSize)targetSize      withHorizontalFittingPriority:(UILayoutPriority)horizontalFittingPriority            verticalFittingPriority:(UILayoutPriority)verticalFittingPriority






Full code is available here to download.
Thanks to this awesome answer.