When screen rotation ReloadData()

Question

I can not update my custom view when you turn the screen of my device.

I tried to do this:

override func viewDidLoad() {
        super.viewDidLoad()


       var myCustomView = Customview()

       self.view.addsubview(myCustomView)
        }
    }

    override func didRotateFromInterfaceOrientation(fromInterfaceOrientation: UIInterfaceOrientation) {

        // Reload Data here

        self.view.reloadData() // Incorrect

    }

But get me error:

the method "UIView" does not have a method called reloadData

Sebastian · Answer 1 · 2015-01-20T13:51:58.080

3

You want to call reloadData() on the instance of your UITableView (assuming there is any). UIView does not provide such a method.

Edit to get notified when the screen orientation has changed, set up a notification:

NSNotificationCenter.defaultCenter().addObserver(self, selector: "didRotate:", name: UIDeviceOrientationDidChangeNotification, object: nil)

and implement the selector, e.g.

func didRotate(notification: NSNotification)
{
    myTableView.reloadData()
}

edited Jan 20 '15 at 13:51

answered Jan 20 '15 at 13:44

Sebastian

8,046
2
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how i call reloadData when rotate screen? – Paul Jan 20 '15 at 13:46
But OP said nothing about tableViews in his question – Coldsteel48 Jan 20 '15 at 13:50
1

That is just an assumption (which I also noted). He asked for `reloadData` and I gave it him. – Sebastian Jan 20 '15 at 13:50
I like your approach :) I mean I just was looking at question to find the `tableView` and didn't find ! – Coldsteel48 Jan 20 '15 at 13:52
@user3351949 you can upvote it then, this is more worth than a comment ;) – Sebastian Jan 20 '15 at 13:52

score 3 · Answer 2 · answered Jan 20 '15 at 13:49

override func didRotateFromInterfaceOrientation(fromInterfaceOrientation: UIInterfaceOrientation) {

    // Reload Data here

    self.view.reloadData() // Incorrect

}

UIView is not a UITableView it doesn't have reloadData method out of the box.

You can implement this method manually -> have fun :)

score 1 · Answer 3 · edited Sep 13 '21 at 12:09

1

I think it's work for you

objective-C

[self.view setNeedsDisplay];

swift

self.view.setNeedsDisplay()

override func viewDidLoad() {
    super.viewDidLoad()
    
    
    var myCustomView = Customview()
    
    self.view.addsubview(myCustomView)
}

override func didRotateFromInterfaceOrientation(fromInterfaceOrientation: UIInterfaceOrientation) {
    
    // Reload Data here
    
    self.view.setNeedsDisplay()
    
}

edited Sep 13 '21 at 12:09

Arasuvel

2,971
1
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40

answered Jan 20 '15 at 15:23

Zoom Nguyễn

102
6

No this is not working. When I turn my device layout is not regenerated and you see evil – Paul Jan 21 '15 at 08:48

When screen rotation ReloadData()

3 Answers3