Pass Custom Parameter to UIbutton #Selector Swift 3

Passing parameters to addTarget:action:forControlEvents

action:@selector(switchToNewsDetails:)

You do not pass parameters to switchToNewsDetails: method here. You just create a selector to make button able to call it when certain action occurs (touch up in your case). Controls can use 3 types of selectors to respond to actions, all of them have predefined meaning of their parameters:

1. with no parameters

   action:@selector(switchToNewsDetails)
   

2. with 1 parameter indicating the control that sends the message

   action:@selector(switchToNewsDetails:)
   

3. With 2 parameters indicating the control that sends the message and the event that triggered the message:

   action:@selector(switchToNewsDetails:event:)
   

It is not clear what exactly you try to do, but considering you want to assign a specific details index to each button you can do the following:

1. set a tag property to each button equal to required index

2. in switchToNewsDetails: method you can obtain that index and open appropriate deatails:

   - (void)switchToNewsDetails:(UIButton*)sender{
       [self openDetails:sender.tag];
       // Or place opening logic right here
   }
   

How to add a function with parameter in addTarget of UIButton in swift 5?

I don't believe it is possible to pass custom parameters to a #selector, as stated here,

Action methods must have a conventional signature. The UIKit framework permits some variation of signature, but both platforms accept action methods with a signature similar to the following:

meaning you method can at least have one of the following signatures:

@objc func buttonActionSkip(sender: UIButton)
@objc func buttonActionSkip(sender: UIButton, for event: UIEvent)

You can however, change the sender type. A possible solution for your problem could be extending the UIButton class adding a name property:

class MyMainSkipButton: UIButton {
    var name: String = ""
}

Then on your code:

//button initialization
let MainSkipButton = MyMainSkipButton(type: .custom)
MainSkipButton.frame = CGRect(x: 50 , y: 48, width: 47.0, height: 24.0)
MainSkipButton.backgroundColor = .blue
MainSkipButton.layer.cornerRadius = 10
MainSkipButton.layer.borderWidth = 1
MainSkipButton.layer.borderColor = UIColor.white.cgColor
MainSkipButton.setTitle(NSLocalizedString("Skip", comment: "Button"), for: .normal)
MainSkipButton.setTitleColor(.white, for: .normal)
MainSkipButton.name = "what ever the name is"
MainSkipButton.addTarget(self, action: #selector(buttonActionSkip(sender:)), for: .touchUpInside)
self.view.addSubview(MainSkipButton)

//function initialization
 @objc func buttonActionSkip(sender: MyMainSkipButton) {
    print("Receive parameter string is\(sender.name)")
    sender.isHidden = true
 }

Attach parameter to button.addTarget action in Swift

You cannot pass custom parameters in addTarget:.One alternative is set the tag property of button and do work based on the tag.

button.tag = 5
button.addTarget(self, action: "buttonClicked:", 
    forControlEvents: UIControlEvents.TouchUpInside)

Or for Swift 2.2 and greater:

button.tag = 5
button.addTarget(self,action:#selector(buttonClicked),
    forControlEvents:.TouchUpInside)

Now do logic based on tag property

@objc func buttonClicked(sender:UIButton)
{
    if(sender.tag == 5){

        var abc = "argOne" //Do something for tag 5
    }
    print("hello")
}

How to pass a Parameter to the addTarget method of button in swift

If the title to be passed is button's title, then you can simply do this :-

@objc func buttonPressed(sender: UIButton){
let title = sender.title(for: .normal)
}

And if it is some other data in section, you can use tags on your buttons, and setting them to indexPath.row :-

 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
cell.buttonView.tag = indexPath.row
}

And in your Button's action, access button's tag

    @objc func buttonPressed(sender: UIButton){
        let objectIndex = sender.tag
        let object = yourArray[objectIndex]
let title = object.title
        }

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