How to get UIButton Target, Action and Control events?

Question

I am using UIImageView\'s with UIButtons a whole bunch. So, I created a custom class to permanently marry these two an make things a little simpler. It all works well unti

Answer 1

Showing how to iterate over a button's targets and create copies of the selector on another button. Specific example is just the touchupinside event, but that's usually all I use.

for (id target in button.allTargets) {
     NSArray *actions = [button actionsForTarget:target
                                      forControlEvent:UIControlEventTouchUpInside];
     for (NSString *action in actions) {
          [newButton addTarget:target action:NSSelectorFromString(action) forControlEvents:UIControlEventTouchUpInside];
     }
}

Answer 2

I used this to remove any possible unwanted target/action before assigning a new one:

if let action = button.actions(forTarget: target, forControlEvent: .touchUpInside)?.first
{
    button.removeTarget(target, action: NSSelectorFromString(action), for: .touchUpInside)
}

or if you really want to remove all actions:

if let actions = button.actions(forTarget: target, forControlEvent: .touchUpInside)
{
    for action in actions
    {
        button.removeTarget(target, action: NSSelectorFromString(action), for: .touchUpInside)
    }
}

Answer 3

UIControl's allTargets and allControlEvents are the way to start. The final piece of the puzzle is actionsForTarget:forControlEvent:, call it once for each target and event.