Question

所以我有此按钮的功能代码

@objc func facebookButtonPressed(_ urlString : String)
    {
        let url = URL(string: urlString)!;
        let safariViewController = SFSafariViewController(url: url);
        self.present(safariViewController, animated: true,completion: nil);
    }

并将此功能直接附加到我的按钮

cell.facebookButton.addTarget(cell.facebookButton, action: #selector(facebookButtonPressed(_:facebookHandles[0])), for: UIControlEvents.touchUpInside);

facebookHandles看起来像这样：

let facebookHandles = ["https://www.facebook.com/harsh.mutha.902","https://www.facebook.com/skvrahul?fb_dtsg_ag=AdzxdqYcNvlFjd6QcX6a2sTXKagTQsR_OCuyHLe8z8gPug%3AAdxQz3YDUQ3tL-a7ME_0Owzu-02FSL0SO7VWqcJ_CpPUrw","https://www.facebook.com/saptarshi.roychaudhuri?fb_dtsg_ag=AdzxdqYcNvlFjd6QcX6a2sTXKagTQsR_OCuyHLe8z8gPug%3AAdxQz3YDUQ3tL-a7ME_0Owzu-02FSL0SO7VWqcJ_CpPUrw"];

为什么会出现此错误，我该如何解决？

Argument of '#selector' does not refer to an '@objc' method, property, or initializer

collection view where the buttons are

从图像中可以看到，在集合视图中每个单元都有多个按钮。现在，当单击开发者单元格的Facebook按钮时，如何为开发者适当打开Facebook页面？

Answer 1

您无法将类型UIButton的参数更改为String，可能需要在cellForItemAt内

cell.facebookButton.addTarget(self, action: #selector(facebookButtonPressed(_:)), for: UIControlEvents.touchUpInside)
cell.facebookButton.tag = indexPath.row

在vc工具中

@objc func facebookButtonPressed(_ sender: UIButton) {
  print(facebookHandles[sender.tag])
  let url = URL(string: facebookHandles[sender.tag])!
  let safariViewController = SFSafariViewController(url: url)
  self.present(safariViewController, animated: true,completion: nil)
}

Swift：按钮功能未执行

1 个答案: