如何为以编程方式制作的文本字段创建 IBAction？

Question

I've made a UITextField in my view controller.

let label = UITextField(frame: CGRect(x: 0, y: 0, width: 300, height: 21))

I was wondering how I would make an IBAction for this.

I'm making a variable amount of text fields which when edited, I want to take their values and make grade for a class. Each textfields value is an individual assignment and are editable by the user, so when one is edited it recalculates the class grade.

Answer 1

You don't need @IBAction , you just create a function that handles the event, and add it as addTarget :

label.addTarget(self, action: #selector(myTargetFunction), for: <event>)

where myTargetFunction is your function, eg:

@objc func myTargetFunction(_ sender: UITextField) { ...

and <event> is one of theUIControl events available for UITextField .