iOS Swift

Requirements:
  1.Xcode6 or Later
  2.Mac Osx 10.10 Later

Development:

Variable Declaration in ios Swift

       Local Variable

             var engine : NSString = ""

      Global Variable

             var engine : NSString?

UIAlertController

   var alert = UIAlertController(title: "Alert", message:"welcome" as String , preferredStyle: UIAlertControllerStyle.Alert)

        alert.addAction(UIAlertAction(title: "Click", style: UIAlertActionStyle.Default, handler: nil))

        self.presentViewController(alert, animated: true, completion: nil)

Creating Method:

   func searchItunesFor(searchTerm: String)

    {

         Print(searchTerm) //This is print log or console

       }

Where

   searchItunesFor-Method Name

   searchTerm:     -receiver Parameter 

   String               -Type of Parameter

Method Calling

    searchItunesFor("JQ Software")

Array and Dictionary 

     var tableData: NSArray = []

  var rowData: NSDictionary= self.tableData[indexPath.row] as NSDictionary

Json Request

func searchItunesFor(searchTerm: String)

    {

        

        // The iTunes API wants multiple terms separated by + symbols, so replace spaces with + signs

        var itunesSearchTerm = searchTerm.stringByReplacingOccurrencesOfString(" ", withString: "+", options: NSStringCompareOptions.CaseInsensitiveSearch, range: nil)

        

        // Now escape anything else that isn't URL-friendly

        var escapedSearchTerm = itunesSearchTerm.stringByAddingPercentEscapesUsingEncoding(NSUTF8StringEncoding)

        var urlPath = "https://itunes.apple.com/search?term=\(escapedSearchTerm)&media=software"

        var url: NSURL = NSURL(string: urlPath)

        var session = NSURLSession.sharedSession()

        var task = session.dataTaskWithURL(url, completionHandler: {data, response, error -> Void in

            println("Task completed")

            if(error) {

                // If there is an error in the web request, print it to the console

                println(error.localizedDescription)

            }

            var err: NSError?

            var jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &err) as NSDictionary

            if(err?) {

                // If there is an error parsing JSON, print it to the console

                println("JSON Error \(err!.localizedDescription)")

            }

//             println(jsonResult)

            var results: NSArray = jsonResult["results"] as NSArray

            dispatch_async(dispatch_get_main_queue(), {

                self.tableData = results

                self.appsTableView.reloadData()

                })

            })

        task.resume()

    }

UITableView Delegate And DataSource

//Number of Row in tableView

  func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int

    {

        return tableData.count

    }

    

// cellForRowAtIndexPath in tableView

    func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! 

{

        let cell: UITableViewCell = UITableViewCell(style: UITableViewCellStyle.Subtitle, reuseIdentifier: "MyTestCell")

        

        var rowData: NSDictionary = self.tableData[indexPath.row] as NSDictionary

        

        cell.text = rowData["trackName"] as String

        

        // Grab the artworkUrl60 key to get an image URL for the app's thumbnail

        var urlString: NSString = rowData["artworkUrl60"] as NSString

        var imgURL: NSURL = NSURL(string: urlString)

        

        // Download an NSData representation of the image at the URL

        var imgData: NSData = NSData(contentsOfURL: imgURL)

        cell.image = UIImage(data: imgData)

        

        // Get the formatted price string for display in the subtitle

        var formattedPrice: NSString = rowData["formattedPrice"] as NSString

        

        cell.detailTextLabel.text = formattedPrice

        

        return cell

    }

    

//  didSelectRowAtIndexPath in tableView

  func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath:

        

        NSIndexPath!)

     {

  tableView.deselectRowAtIndexPath(indexPath, animated: false)

  

            var rowData: NSDictionary = self.tableData[indexPath.row] as NSDictionary

 }

    

    func tableView(tableView: UITableView!, canEditRowAtIndexPath indexPath: NSIndexPath!) -> Bool

    {

        return true

    }

    

    func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!) {

        if (editingStyle == UITableViewCellEditingStyle.Delete) {

            // handle delete (by removing the data from your array and updating the tableview)

        }

    }

    

//  heightForRow in tableView

    func tableView(tableView: UITableView!, heightForRowAtIndexPath indexPath: NSIndexPath!) -> CGFloat

    {

        return 70.0;

    }

navigationController

  ie Left Bar Button and Right Bar Button

 Left Bar Button

 navigationController.setNavigationBarHidden(false, animated:true)

        var myBackButton:UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton

        myBackButton.addTarget(self, action: "popToRoot:", forControlEvents: UIControlEvents.TouchUpInside)

        myBackButton.setTitle("Back", forState: UIControlState.Normal)

        myBackButton.setTitleColor(UIColor.blueColor(), forState: UIControlState.Normal)

        myBackButton.sizeToFit()

        var myCustomBackButtonItem:UIBarButtonItem = UIBarButtonItem(customView: myBackButton)

        self.navigationItem.leftBarButtonItem  = myCustomBackButtonItem

        

Right Bar Button

        var myRightButton:UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton

        myRightButton.addTarget(self, action: "numberTapped:", forControlEvents: UIControlEvents.TouchUpInside)

        myRightButton.setTitle("Alert", forState: UIControlState.Normal)

        myRightButton.setTitleColor(UIColor.blueColor(), forState: UIControlState.Normal)

        myRightButton.sizeToFit()

        var myCustomRightButtonItem:UIBarButtonItem = UIBarButtonItem(customView: myRightButton)

        self.navigationItem.rightBarButtonItem  = myCustomRightButtonItem

func popToRoot(sender:UIBarButtonItem)

    {

        self.navigationController.popToRootViewControllerAnimated(true)

//         self.dismissModalViewControllerAnimated(true)

    }

@IBAction func numberTapped(sender: AnyObject)

{

    var alert = UIAlertController(title: "Alert", message:"welcome" as String , preferredStyle: UIAlertControllerStyle.Alert)

        alert.addAction(UIAlertAction(title: "Click", style: UIAlertActionStyle.Default, handler: nil))

        self.presentViewController(alert, animated: true, completion: nil)

}

UIWebview Load URL

  @IBOutlet var appsWebView : UIWebView

  appsWebView.frame=CGRectMake(0, 150, self.view.bounds.width, self.view.bounds.height-150)

        let url = NSURL(string: "http://www.google.com")

        let request = NSURLRequest(URL: url)

        appsWebView.loadRequest(request)

               appsWebView.sizeToFit()

        appsWebView.setNeedsDisplay()

        appsWebView.setNeedsLayout()

One class to another class move

        let mainStoryboard = UIStoryboard(name: "Main", bundle: NSBundle.mainBundle())

        

        let vc :ViewController1 = mainStoryboard.instantiateViewControllerWithIdentifier("SecondViewController") as ViewController1

   

navigationController

        self.navigationController.pushViewController(vc, animated: true)

presentViewController

       self.presentViewController(navigationController, animated: true, completion: nil)