ios - swift: Adding an action to an array of buttons -

i'm designing simple sudoku app , need trigger action when 1 of 81 buttons clicked. created array of uibuttons in viewcontroller:

class sudokuboardcontroller : uiviewcontroller { @iboutlet var collectionofbuttons: array<uibutton>?    override func viewdidload() {      collectionofbuttons.addtarget(self, action: "buttonclicked:", forcontrolevents: uicontrolevents.touchupinside)      ...   }  } 

i'm able add buttons array storyboard ok, when try addtarget message:

value of type 'array<uibutton>?' has no member addtarget 

is there solution problem not involve me creating 81 different outputs each button?

thanks help!

cheers

you need iterate through array of buttons , add target each of button. try out following code

var index = 0 button in collectionofbuttons! {     button.tag = index // setting tag, identify button tapped in action method     button.addtarget(self, action: "buttonclicked:", forcontrolevents: uicontrolevents.touchupinside)     index++ }