UIView viewwithtag method in swift [closed]

问题

Closed. This question needs to be more focused. It is not currently accepting answers.

---

Want to improve this question? Update the question so it focuses on one problem only by editing this post.

Closed 5 years ago.

I'm trying to learn some swift. I programmatically add labels. I want to change their properties later.

the viewwithtag method returns a UIView, how to I access my UILabel from this?

cheers

回答1:

You need to use a typecast. This code will do it:

    if let theLabel = self.view.viewWithTag(123) as? UILabel {
        theLabel.text = "some text"
    }

回答2:

viewWithTag: returns a UIView, you need to typecast it to UILabel.

var yourLabel : UILabel = yourView.viewWithTag(yourTag) as! UILabel;

回答3:

You need to write as

var getMyLabel : UILabel = self.view.viewWithTag(tagValue) as UILabel;

来源：https://stackoverflow.com/questions/24096908/uiview-viewwithtag-method-in-swift