在uibutton中绑定动作-反应性可可

Question

I have declared a action as

var postAction: Action<String, Data, NSError>!

now what i want is to trigger this action when the button triggers.

 triggerBtn.reactive.pressed = CocoaAction(postAction)

But can't.How can i trigger some action when a button is pressed using reactive cocoa?

I have figured out a way to observe the actions.

self.testBtn.reactive.trigger(for: .touchUpInside).observe{ event in
        //do something
        print(event)

    }

But cant figure out how to get the sender and bind Custom Action?

Answer 1

Your Action has an input of type String , but the default CocoaAction is no input (type () ).

Depending on where your input should come from when the button is pressed, you can use either a fixed value (if its known at this point):

button.reactive.pressed = CocoaAction(postAction, input: "Some Input")

or an inputTransformer

button.reactive.pressed = CocoaAction(postAction) { sender in
    // Calculate input for the action when the button is pressed
    return "Some Value"
}