swift3target-actionxcode8

Passing a parameter to function

//This is the function which contain my button action programatically 

func didSetCategory(info: FitnessCenterModel) {
    myButton.addTarget(self, action: #selector(Function(d: info)), for: .touchUpInside)    
     }

// my selector function for the button target

func Function(d:FitnessCenterModel ) {
print(info)
}

but i am not able to pass as the compiler is throwing an error "Argument of '#selector' does not refer to an '@Objc' method, property, or initialzer

Solution

  • A selector does not refer to a method call, but just the method itself.

    What you are doing here:

    #selector(Function(d: info))

    is passing an argument to Function and creating a selector from this. You can't do this. A selector must have no arguments. So how do you pass the info parameter then?

    Create a property in your class called selectedCategory:

    var selectedCategory: FitnessCenterModel!

    Before you call addTarget, assign info to the above property:

    selectedCategory = info

    Create another method that calls Function with the parameter.

    func buttonClicked() {
    Function(d: selectedCategory)
}

    Change your addTarget call to use a buttonClicked as a selector:

    #selector(buttonClicked)