swift - iOS button title color won't change -

i'm creating uibutton dynamically following code creates per specified style.

let frame = cgrect(x: 10, y: 6, width: 60, height: 30 )     let button = uibutton(frame: frame) button.settitlecolor(uicolor.blackcolor(), forstate: uicontrolstate.normal) button.backgroundcolor = uicolor.whitecolor() button.addtarget(self, action: "filterbycategory:", forcontrolevents: uicontrolevents.touchupinside) self.categoryscrollview.addsubview(button) 

with button, want toggle style when tapped. following code changes background color not title color. idea why title color won't change?

func filterbycategory(sender:uibutton) {      if sender.backgroundcolor != uicolor.blackcolor() {         sender.settitlecolor(uicolor.whitecolor(), forstate: uicontrolstate.selected)         sender.backgroundcolor = uicolor.blackcolor()     } else {         sender.settitlecolor(uicolor.blackcolor(), forstate: uicontrolstate.normal)         sender.backgroundcolor = uicolor.whitecolor()     }  } 

because button turn uicontrolstate.normal after touch it, become .highlighted, .normal

you should set sender.settitlecolor(uicolor.whitecolor(), forstate: uicontrolstate.selected)

to

sender.settitlecolor(uicolor.whitecolor(), forstate: uicontrolstate. normal)

or, set states since u did check color

sender.settitlecolor(uicolor.whitecolor(), forstate: [.normal,.selected,.highlighted])

*edit: above doesn't work, can use nsattributedstring instead

if self.loginbutton.backgroundcolor == uicolor.blackcolor() {             let tittle = nsattributedstring(string: "login", attributes: [nsforegroundcolorattributename: uicolor.blackcolor()])             loginbutton.setattributedtitle(tittle, forstate: .normal)             loginbutton.backgroundcolor = uicolor.whitecolor()         } else {             let tittle = nsattributedstring(string: "login", attributes: [nsforegroundcolorattributename: uicolor.whitecolor()])             loginbutton.setattributedtitle(tittle, forstate: .normal)             loginbutton.backgroundcolor = uicolor.blackcolor()         }