RxSwift: How to add gesture to UILabel?

Question

I have a label with isUserInteractionEnabled set to true. Now, I need to add UITapGestureRecognizer for the label. Is there a way to add in Rx way.

I have looked at the RxSwift library here. Which they didn't provide any extension for adding gesture. The UILabel+Rx file has only text and attributedText.

Is there any workaround to add gesture to label?

Answer 1

A UILabel is not configured with a tap gesture recognizer out of the box, that's why RxCocoa does not provide the means to listen to a gesture directly on the label. You will have to add the gesture recognizer yourself. Then you can use Rx to observe events from the recognizer, like so:

let disposeBag = DisposeBag() let label = UILabel() label.text = "Hello World!"  let tapGesture = UITapGestureRecognizer() label.addGestureRecognizer(tapGesture)  tapGesture.rx.event.bind(onNext: { recognizer in     print("touches: \(recognizer.numberOfTouches)") //or whatever you like }).disposed(by: disposeBag) 

Answer 2

Swift 5 (using RxGesture library).

Best and simplest option imho.

     label         .rx         .tapGesture()         .when(.recognized) // This is important!         .subscribe(onNext: { [weak self] _ in             guard let self = self else { return }             self.doWhatYouNeedToDo()         })         .disposed(by: disposeBag) 

Take care! If you don't use .when(.recognized) the tap gesture will fire as soon as your label is initialised!