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UIButton Arguments when creating an IBAction
When we create an IBAction for a button there is a dropdown menu "Arguments": -None -Sender -Sender and Event
Can anyone describe the difference and give examples of their usage?
Thanks in advance.
Jeroen de Vrind29,772 Points
You just need to add arguments when you want something to do with it in the method you call when you press the button. Most of the time you don't need arguments and you can set it to 'None'.
In case different buttons call the same method and you wants to know which button did call the method, then you want to use the 'sender'. Sender is the object (in this case the button) that called the method. Or if you want to change or do something with the sender (button), you use sender.
The same for 'event'. If you want to distinct different events (like one tap, double tap) you can refer to this action in your code by using this event parameter.