Delay after didSelectRowAtIndexPath

Question

I have a tableview with custom cells, when I tap on one of my cells it shows me the next viewcontroller as it should be, but there is a delay which sometimes goes up to 5 seconds.

How can I get rid of the delay?

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    let person = persons[indexPath.row]

    var personViewController: PersonViewController = self.storyboard?.instantiateViewControllerWithIdentifier("PersonViewController") as PersonViewController

    personViewController.name = person.name
    personViewController.imageName = person.image

    self.presentViewController(personViewController, animated: true, completion: nil)
}

PersonViewController

import UIKit

class PersonViewController: UIViewController {

@IBOutlet weak var personImage: UIImageView!
@IBOutlet weak var overlayImage: UIImageView!
@IBOutlet weak var nameLabel: UILabel!

var name: String?
var imageName: String?

override func viewDidLoad() {
    super.viewDidLoad()

    // Do any additional setup after loading the view.
    self.personImage.image = UIImage(named: imageName!)
    self.overlayImage.image = UIImage(named: "image_overlay.png") //this is a filter
    self.nameLabel.text = imageName
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

}

Answer 1

I have the same problem and it seems that this is a bug of iOS. Solved with the following solution.

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 
    Int64(0 * Double(NSEC_PER_SEC))), 
    dispatch_get_main_queue()) { () -> Void in
        self.presentViewController(personViewController, animated: true,completion: nil)
    }

Swift3 version:

DispatchQueue.main.async {
    self.presentViewController(personViewController, animated: true,completion: nil)
}

Answer 2

Maybe you will call the method

[tableView deselectRowAtIndexPath:indexPath animated:NO];

before Push ViewController or Other Operation. Like

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    // 1. manual call this method to deSelect Other Cell
    [tableView deselectRowAtIndexPath:indexPath animated:NO];

    // 2. than do other operation
    PushViewController Or Some Animation ....
}

that`s solve my problem . when i custom transition viewController for Model Style