跟踪应用程序 Swift 中的所有用户触摸

Question

我在 stackoverflow 上搜索了大约一周，关于我想要跟踪所有用户触摸的问题，但没有成功，我知道有很多这样的问题打开了，但不是我要寻找的具体问题。

我想要的： 跟踪所有用户触摸，例如按下 UIButton 或按下 UITextfield 或打开某些 ViewController 等等。 但是：为什么这个问题不同，我想要一些标签文本来解释按下了哪个确切的按钮，例如，如果我有 LoginVC 并且有登录按钮，我想要方法来解释“ 按下了登录按钮”或“按下了忘记按钮”，然后记录此事件/触摸。

提前致谢！

Answer 1

您可以创建一个 BaseViewController，并在其视图中添加一个点击手势识别器，然后确定哪个子视图被点击，如下所示：

class BaseViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(viewDidTap(_:)))
        tapRecognizer.delegate = self
        tapRecognizer.cancelsTouchesInView = false
        self.view.addGestureRecognizer(tapRecognizer)
    }

    @objc func viewDidTap(_ recognizer: UITapGestureRecognizer) {
        guard let view = recognizer.view else { return }

        let location = recognizer.location(in: view)
        let subview = view.hitTest(location, with: nil)
        self.log(tappedView: subview ?? view)
    }

    func log(tappedView: UIView) {
        // do some base job with the tapped view
    }

}

extension BaseViewController: UIGestureRecognizerDelegate {
    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldBeRequiredToFailBy otherGestureRecognizer: UIGestureRecognizer) -> Bool {
        let location = gestureRecognizer.location(in: self.view)
        guard let textField = self.view.hitTest(location, with: nil) as? UITextField else { return false }

        textField.becomeFirstResponder()
        return true
    }
}

现在您可以扩展其他视图控制器以具有 BaseViewController 的功能并覆盖 log 方法，如下所示：

class ChildViewController: BaseViewController {

    let forgotButton = UIButton()
    let signinButton = UIButton()

    override func log(tappedView: UIView) {
        super.log(tappedView: tappedView)

        if (tappedView === self.forgotButton) {
            labelLog.text = "Forgot button was tapped"
        } else if (tappedView === self.signinButton) {
            labelLog.text = "Sign In button was tapped"
        }
    }
}