ViewController shows objects not from origin 0

Question

I am having an issue when going to a new ViewController: The new ViewController has scrollView in it which starts at origin y: 0. The scrollView has a textView that starts at origin y: 0.

BUT when I run the app on the simulator, it shows me the textView somewhere around the middle of the screen, for some reason.

I added the scrollView and the textView programmatically.

Here is my code:

class addViewController: UIViewController, UIPickerViewDelegate, UIScrollViewDelegate {

     var textView = UITextView()
     var scrollView = UIScrollView()

     override func viewDidLoad() {
        super.viewDidLoad()

        scrollView.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height)
        view.addSubview(scrollView)

        textView.frame = CGRect(x: 20.0, y: 0, width: 250.0, height: 100.0)
        textView.center = self.view.center
        textView.textAlignment = NSTextAlignment.justified
        textView.textColor = UIColor.blue
        textView.backgroundColor = UIColor.lightGray
        textView.text = "texttttt"

        scrollView.addSubview(textView)
        scrollView.contentSize = CGSize(width: view.frame.width, height: view.frame.height)
}

To get to this ViewController - You click on a cell in the previous ViewController, this is code inside the didSelectCellAt:

let addNoteVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "addViewController") as! addViewController

self.navigationController?.pushViewController(addNoteVC, animated: true)

Answer 1

You should reconsider your line textView.center = self.view.center. This will override the frame you set before. And since you seem to know where to put it with your frame just delete it