Imagem de botão personalizada sem definir a moldura do botão:
Você pode usar init(image: UIImage?, style: UIBarButtonItemStyle, target: Any?, action: Selector?)
para inicializar um novo item usando a imagem especificada e outras propriedades.
let button1 = UIBarButtonItem(image: UIImage(named: "imagename"), style: .plain, target: self, action: Selector("action")) // action:#selector(Class.MethodName) for swift 3
self.navigationItem.rightBarButtonItem = button1
Verifique este Apple Doc. referência
UIBarButtonItem com imagem de botão personalizada usando a moldura do botão
PARA Swift 3.0
let btn1 = UIButton(type: .custom)
btn1.setImage(UIImage(named: "imagename"), for: .normal)
btn1.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
btn1.addTarget(self, action: #selector(Class.Methodname), for: .touchUpInside)
let item1 = UIBarButtonItem(customView: btn1)
let btn2 = UIButton(type: .custom)
btn2.setImage(UIImage(named: "imagename"), for: .normal)
btn2.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
btn2.addTarget(self, action: #selector(Class.MethodName), for: .touchUpInside)
let item2 = UIBarButtonItem(customView: btn2)
self.navigationItem.setRightBarButtonItems([item1,item2], animated: true)
PARA Swift 2.0
e mais velhos
let btnName = UIButton()
btnName.setImage(UIImage(named: "imagename"), forState: .Normal)
btnName.frame = CGRectMake(0, 0, 30, 30)
btnName.addTarget(self, action: Selector("action"), forControlEvents: .TouchUpInside)
//.... Set Right/Left Bar Button item
let rightBarButton = UIBarButtonItem()
rightBarButton.customView = btnName
self.navigationItem.rightBarButtonItem = rightBarButton
Ou simplesmente use init (customView :) como
let rightBarButton = UIBarButtonItem(customView: btnName)
self.navigationItem.rightBarButtonItem = rightBarButton
Para System UIBarButtonItem
let camera = UIBarButtonItem(barButtonSystemItem: .Camera, target: self, action: Selector("btnOpenCamera"))
self.navigationItem.rightBarButtonItem = camera
Para definir mais de 1 itens, use rightBarButtonItems
ou para o lado esquerdoleftBarButtonItems
let btn1 = UIButton()
btn1.setImage(UIImage(named: "img1"), forState: .Normal)
btn1.frame = CGRectMake(0, 0, 30, 30)
btn1.addTarget(self, action: Selector("action1:"), forControlEvents: .TouchUpInside)
let item1 = UIBarButtonItem()
item1.customView = btn1
let btn2 = UIButton()
btn2.setImage(UIImage(named: "img2"), forState: .Normal)
btn2.frame = CGRectMake(0, 0, 30, 30)
btn2.addTarget(self, action: Selector("action2:"), forControlEvents: .TouchUpInside)
let item2 = UIBarButtonItem()
item2.customView = btn2
self.navigationItem.rightBarButtonItems = [item1,item2]
Usando setLeftBarButtonItem
ousetRightBarButtonItem
let btn1 = UIButton()
btn1.setImage(UIImage(named: "img1"), forState: .Normal)
btn1.frame = CGRectMake(0, 0, 30, 30)
btn1.addTarget(self, action: Selector("action1:"), forControlEvents: .TouchUpInside)
self.navigationItem.setLeftBarButtonItem(UIBarButtonItem(customView: btn1), animated: true);
Para swift> = 2.2, a ação deve ser #selector(Class.MethodName)
... por exemplobtnName.addTarget(self, action: #selector(Class.MethodName), forControlEvents: .TouchUpInside)
let camera = UIBarButtonItem(barButtonSystemItem: .Camera, target: self, action: #selector(Class.MethodName))