Pushing Viewcontroller through navigation controller , Showing Black screen

Question

I being searching this issue in stack overflow but couldn't get an exact answer to the issue, i being stuck in it for long time. Mine issue is i'm trying to push a TestViewController through navigation controller. when i click the button the TestViewController is being load with navigation bar and the UIScreen is in black colour.

Code of TestViewController

import UIKit
class TestViewController: UIViewController {

    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.
    }
    override func viewWillAppear(animated: Bool) {
        super.viewWillAppear(true)
        navigationItem.title = "Test page"
    }
}

Code of Button

@IBAction func secondButtonClicked(sender: AnyObject) {
    buttonPressedNumber = "Two Clicked"
    buttonTextColor = UIColor.magentaColor()
      let a = TestViewController()
      let b:UIViewController = a as UIViewController
      navigationController?.pushViewController(b, animated: false)
}

Possible duplicate of [Swift - programmatically navigate to another view controller/scene](http://stackoverflow.com/questions/27374759/swift-programmatically-navigate-to-another-view-controller-scene) — Muhammad Adnan, Aug 23 '16 at 12:49

score 17 · Accepted Answer · answered Aug 23 '16 at 12:52

17

let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)
let resultViewController = storyBoard.instantiateViewControllerWithIdentifier("ViewController") as! ViewController
self.navigationController?.pushViewController(resultViewController, animated: true)

answered Aug 23 '16 at 12:52

Chirag Patel

1,453
1
11
21

storyBoard.instantiateViewControllerWithIdentifier(`"storyboard id"`) – someone Mar 25 '22 at 06:51

score 8 · Answer 2 · answered Aug 23 '16 at 13:36

8

You have not set the background color of your view.

The default color of the of UIWindow is Black. So if you have not set any other background colors in the stack they will all be transparent.

Not setting an appropriate background color for your UIViewController's view will also cause weird visuals during a transition.

answered Aug 23 '16 at 13:36

Christopher Rex

392
3
10

I am setting the background color for the view.. but I still get the weird visual during the transition.. how to get rid of this? – Skywalker Nov 24 '22 at 11:09
can we change the default color of the UIWindow? – Skywalker Nov 24 '22 at 11:09

score 6 · Answer 3 · answered Aug 23 '16 at 12:47

6

let nextVC = self.storyboard?.instantiateViewControllerWithIdentifier("storyboardID") as! viewController
self.navigationController?.pushViewController(nextVC, animated: true)

answered Aug 23 '16 at 12:47

Keyur Hirani

1,607
14
22

score 0 · Answer 4 · answered Aug 23 '16 at 12:58

0

not sure the background colour is set to white these days. therefore, if view controller is created programmatically

in viewDidLoad/viewWillAppear for a white background colour

view.backgroundColor = UIColor.whiteColor()

answered Aug 23 '16 at 12:58

Peter Schmidt

1
1

Pushing Viewcontroller through navigation controller , Showing Black screen

4 Answers4