ios - UIButton change font and text at the same time -

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we have uibutton in our app change , forth between displaying normal system font string , fontawesome icon (which unicode character specific font). can switch , forth between these fine, except ios animates 2 changes 1 after other, there brief amount of time text shows strangely after first change before second. tried using uiview.beginanimations commitanimations counterpart, animatewithduration:animations:, neither had effect.

how can change both text , font @ same time?

edit: updated code per comment

func changetosend() {     sendbutton.titlelabel?.font = uifont(name: "system", size: 15)     sendbutton.settitle("send", forstate: uicontrolstate.normal) }  func changetomicrophone() {     sendbutton.titlelabel?.font = uifont(name: "fontawesome", size: 24)     sendbutton.settitle("\u{f130}", forstate: uicontrolstate.normal) }

try this:

    func changetosend() {         uiview.performwithoutanimation {              self.sendbutton.titlelabel?.font = uifont(name: "system", size: 15)             self.sendbutton.settitle("send", forstate: uicontrolstate.normal)         }     }      func changetomicrophone() {         uiview.performwithoutanimation {             self.sendbutton.titlelabel?.font = uifont(name: "fontawesome", size: 24)             self.sendbutton.settitle("\u{f130}", forstate: uicontrolstate.normal)         }     }

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