将目标添加到 UITableViewCell 内的 UIButton

Question

I have UIButton inside my CustomTableViewCell and I also call addTarget :

let eyeButton: UIButton = {
    let v = UIButton()
    v.addTarget(self, action: #selector(eyeButtonTapped), for: .touchUpInside)
    v.setImage(UIImage(named: "eyeOpen"), for: .normal)
    v.translatesAutoresizingMaskIntoConstraints = false
    return v
}()

However this functions is not being called (also declared inside CustomTableViewCell ):

@objc func eyeButtonTapped(){
    print("Hi")
}

There is a "tap-animation" when I click the button but nothing happens..

Anyone know why this happens and how I can fit it ?

Answer 1

When declaring your button, self doesn't exist at that point.

Either add the target in your setup func, or change your declaration to a lazy var :

lazy var eyeButton: UIButton = {
    let v = UIButton()
    v.addTarget(self, action: #selector(eyeButtonTapped), for: .touchUpInside)
    v.setImage(UIImage(named: "eyeOpen"), for: .normal)
    v.translatesAutoresizingMaskIntoConstraints = false
    return v
}()

Answer 2

Create Button Outlet Name cellbuttonName or anyother than write that code in tableviewdelegate cellForRowAtIndexPath

[self.cellbuttonName addTarget:self action:@selector(updateDate:) forControlEvents:UIControlEventTouchUpInside];