Segue to another imageview for fullsize Image - swift

Question

I have a photoview controller that displays images in a table view. I am looking for help to segue to a fullsizeimageview imageview controller. I can't figure out how to do that.
import UIKit
import Parse
import ParseUI
class PhotosViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
let arrSubCatData: NSMutableArray = [];
#IBOutlet weak var tblPhotos: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
self.navigationController?.navigationItem.title = "Photos"
var tabBar : TabBarController = self.tabBarController as! TabBarController
println(tabBar.parkInfo)
self.tblPhotos.tableFooterView = UIView()
var query = PFQuery(className: "MultiImages")
query.whereKey("placeId", equalTo:tabBar.parkInfo?.valueForKey("objectId") as! String)
query.findObjectsInBackgroundWithBlock {
(objects: [AnyObject]?, error: NSError?) -> Void in
if error == nil {
// The find succeeded.
self.arrSubCatData.addObjectsFromArray(objects!)
self.tblPhotos?.reloadData();
} else {
// Log details of the failure
println("Error: \(error!) \(error!.userInfo!)")
}
}
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("tableViewCell") as! UITableViewCell
if let file:PFFile = (self.arrSubCatData.objectAtIndex(indexPath.row).valueForKey("image") as? PFFile) {
file.getDataInBackgroundWithBlock {
(imageData: NSData?, error: NSError?) -> Void in
if error == nil {
if let imageData = imageData {
var imgView : UIImageView = cell.contentView.viewWithTag(100) as! UIImageView
imgView.image = UIImage(data:imageData)
}
}
}
}
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
self.performSegueWithIdentifier("segueToInfo", sender: indexPath.row)
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.arrSubCatData.count
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
/*override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "showfullsizeimage" {
if let indexPath = self.tableView.indexPathForSelectedRow() {
let detailViewController = segue.destinationViewController as! PhotoFullSizeController
detailViewController.detailItem = objects[indexPath.row]
}
}
}
*/
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
My newly created fullsize image controller is like this with segue identifier "fullsizeimageview"
import UIKit
class PhotoFullSizeController: UIViewController {
#IBOutlet weak var fullImageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}

Answer 1

First of all, You should add TapGesture to the imgView.
Your cellForRowIndexPath will be now as follow :
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("tableViewCell") as! UITableViewCell
if let file:PFFile = (self.arrSubCatData.objectAtIndex(indexPath.row).valueForKey("image") as? PFFile) {
file.getDataInBackgroundWithBlock {
(imageData: NSData?, error: NSError?) -> Void in
if error == nil {
if let imageData = imageData {
var imgView : UIImageView = cell.contentView.viewWithTag(100) as! UIImageView
//Add Tap Gesture to the imgView
imgView.userInteractionEnabled = true;
let tapRecognizer = UITapGestureRecognizer(target: self, action: Selector("imageTapped"))
imgView.addGestureRecognizer(tapRecognizer)
imgView.image = UIImage(data:imageData)
}
}
}
}
return cell
}
Now write a handler for imageTapped
//When image is tapped
func imageTapped()
{
println("image tapped")
self.performSegueWithIdentifier("fullsizeimageview", sender: self)
}
And prepareForSegue will look as follow :
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if(segue.identifier == "fullsizeimageview")
{
let destVC = (segue.destinationViewController as? PhotoFullSizeController)!
let indexPath = self.tblPhotos.indexPathForSelectedRow() //IndexPath for selected table row
if let file:PFFile = (self.arrSubCatData.objectAtIndex(indexPath!.row).valueForKey("image") as? PFFile) {
destVC.imageFile = file
}
}
}
In your PhotoFullSizeController controller
class PhotoFullSizeController: UIViewController {
#IBOutlet weak var fullImageView: UIImageView!
var imageFile: PFFile!
override func viewDidLoad() {
super.viewDidLoad()
// Load image
self.imageFile.getDataInBackgroundWithBlock {
(imageData: NSData?, error: NSError?) -> Void in
if error == nil {
if let imageData = imageData {
//Set image in imageview
fullImageView.image = UIImage(data:imageData)
}
}
}
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Let me know if any issue is there. Hope this will help!