swift - change uinavigation bar item position -

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how can change uinavigation baritem position leftbarbuttonitem rightbarbuttonitem function

enter image description here

for need create custom barbuttonitem , set right side, need hide default backbarbutton, try thing this. add below code inside viewdidload. 

self.navigationitem.hidesbackbutton = true let btnforward = uibutton(frame: cgrect(x: 0, y: 0, width: 25, height: 25)) btnforward.setimage(uiimage(named: "forward_arrow"), forstate: .normal) btnforward.addtarget(self, action: #selector(self.buttonaction(_:)), forcontrolevents: .touchupinside) let backitem = uibarbuttonitem(customview: btnforward)      self.navigationitem.rightbarbuttonitem = backitem

after add action method inside viewcontroller

func buttonaction(sender: uibutton) {     self.navigationcontroller?.popviewcontrolleranimated(true) }

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