NavigationItem.rightBarButtonItem 不工作

Question

这是已初始化的分享按钮：

let shareButton = UIBarButtonItem(image: #imageLiteral(resourceName: "ShareButtonCircle"), style: .plain, target: self, action: #selector(shareButtonTapped))

这是 Objc 方法：

print("Share Button Clicked")
    let topicTitleAndDesc = [self]
    let vc = UIActivityViewController(activityItems: topicTitleAndDesc, applicationActivities: nil)
    present(vc, animated: true)

viewDidLoad:

self.navigationItem.rightBarButtonItem = shareButton

显示在屏幕上但不执行操作：

Answer 1

您正在尝试共享 UIViewController，这就是您没有收到任何响应的原因。尝试按如下方式更改项目：

let vc = UIActivityViewController(activityItems: [String(describing: self)], applicationActivities: nil)

Answer 2

我没有遇到以下代码的任何问题：

override func viewDidLoad() {
        super.viewDidLoad()
        let shareButton = UIBarButtonItem(image: #imageLiteral(resourceName: "ShareButtonCircle"), style: .plain, target: self, action: #selector(shareButtonTapped))
        self.navigationItem.rightBarButtonItem = shareButton
}

@objc func shareButtonTapped() {
        print("Share Button Clicked")
        let topicTitleAndDesc = [self]
        let vc = UIActivityViewController(activityItems: topicTitleAndDesc, applicationActivities: nil)
        present(vc, animated: true)
    }

RESULT HERE

NavigationItem.rightBarButtonItem 不工作

NavigationItem.rightBarButtonItem is not working

uinavigationbar

rightbarbuttonitem

ios

swift