Swift – 如何在自定义类中设置UIBarButtonItem的图像

概述嗨,我有一个UIBarButton Image的自定义类： class CheckBoxBarButton : UIBarButtonItem { // images let checkedImage = UIImage(named: "img_checked")! as UIImage let unCheckedImage = UIImage(named: "img_u 嗨,我有一个UIbarbutton Image的自定义类：

class CheckBoxbarbutton : UIbarbuttonItem {    // images    let checkedImage = UIImage(named: "img_checked")! as UIImage    let unCheckedImage = UIImage(named: "img_unchecked")! as UIImage    //bool property    var isChecked: Bool = false {        dIDSet{            if isChecked == true {                // here I want to set the checked image for my bar button            }else{                // here I want to set the unchecked image for my bar button            }        }    }    overrIDe func awakeFromNib() {// here I want to add a target when the button is touched.// the actual code is returning an error because UIbarbuttonImage doesnt not have addtarget        self.addTarget(self,action: #selector(CheckBoxbarbutton.buttonClicked(_:)),forControlEvents: UIControlEvents.touchUpInsIDe)        self.isChecked = false    }}

Any clue?

@H_419_18@解决方法 您可以使用图像创建一个按钮,并将UIbarbuttonItem的customVIEw设置为您的按钮：

let button = UIbutton()button.setimage(checkedImage )// or button.setimage(unCheckedImage) based on the conditionsbutton.frame = CGRectMake(0,30,30)self.customVIEw = button

或者,如果已经定义了按钮,则设置customVIEw图像：

self.customVIEw.setimage(checkedImage )

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