How do I check when a UITextField changes?

Question

I am trying to check when a text field changes, equivalent too the function used for textView - textViewDidChange so far I have done this:

  fu         


        

Answer 1

Maybe use RxSwift ?

need

pod 'RxSwift',    '~> 3.0'
pod 'RxCocoa',    '~> 3.0'

add imports obviously

import RxSwift
import RxCocoa

So u have a textfield : UITextField

let observable: Observable = textField.rx.text.asObservable()
observable.subscribe(
            onNext: {(string: String?) in
                print(string!)
        })

U have other 3 methods..

1. onError
2. onCompleted
3. onDisposed
4. onNext