添加手势识别器 uivew 导航栏 swift 不起作用

Posted 2023-03-13

【中文标题】添加手势识别器 uivew 导航栏 swift 不起作用

【英文标题】：add gesture recognizer uivew navigation bar swift not working

【发布时间】：2018-06-24 15:17:25

【问题描述】：

我有一个带有导航栏的导航控制器，我添加了一个 UIView，其中包含 imageView 的子视图和用于 titleView 的 UILabel。 我需要能够单击该视图以在该视图上使用 addGestureRecognizer 执行其他操作，但控制台上没有打印任何内容。 UIImageView 必须在 UILabel 旁边

这是我目前尝试的代码

private func setupNavBarWithUser() 
    let titleView = UIView()
    let width = titleView.sizeThatFits(CGSize(width: CGFloat.greatestFiniteMagnitude, height: CGFloat.greatestFiniteMagnitude)).width
    titleView.frame = CGRect(origin:CGPoint.zero, size:CGSize(width: width, height: 500))

    let profileImageView = UIImageView()
    profileImageView.translatesAutoresizingMaskIntoConstraints = false
    profileImageView.contentMode = .scaleAspectFill
    profileImageView.layer.cornerRadius = 20
    profileImageView.clipsToBounds = true
    ImageService.getImage(withURL: NSURL(string: (user?.pictureURL)!)! as URL)  (image) in
        profileImageView.image = image
    
    titleView.addSubview(profileImageView)
    profileImageView.leftAnchor.constraint(equalTo: titleView.leftAnchor).isActive = true
    profileImageView.centerYAnchor.constraint(equalTo: titleView.centerYAnchor).isActive = true
    profileImageView.widthAnchor.constraint(equalToConstant: 40).isActive = true
    profileImageView.heightAnchor.constraint(equalToConstant: 40).isActive = true

    let nameLabel = UILabel()
    titleView.addSubview(nameLabel)
    nameLabel.text = user?.first_name
    nameLabel.textColor = .white
    nameLabel.translatesAutoresizingMaskIntoConstraints = false
    nameLabel.leftAnchor.constraint(equalTo: profileImageView.rightAnchor, constant: 8).isActive = true
    nameLabel.centerYAnchor.constraint(equalTo: profileImageView.centerYAnchor).isActive = true
    nameLabel.rightAnchor.constraint(equalTo: titleView.rightAnchor).isActive = true
    nameLabel.heightAnchor.constraint(equalTo: profileImageView.heightAnchor).isActive = true

    titleView.centerXAnchor.constraint(equalTo: titleView.centerXAnchor).isActive = true
    titleView.centerYAnchor.constraint(equalTo: titleView.centerYAnchor).isActive = true

    self.navigationItem.titleView = titleView
    let recognizer = UITapGestureRecognizer(target: self, action: #selector(self.testing))
    titleView.isUserInteractionEnabled = true
    titleView.addGestureRecognizer(recognizer)


@objc func testing() 
    print("hello")

希望有人能帮我解决这个问题，非常感谢！！

UPDATE this is where I need to add a gesture recognizer

【参考方案1】：

在viewDidLoad/viewWillAppear中添加这个方法

 if let navigationBar = self.navigationController?.navigationBar 
        // create a button
         let button =  UIButton(type: .custom)
        button.frame = CGRect(x: navigationBar.frame.width/2-20, y: 0, width: 100, height: 40)
        button.setTitleColor(.red, for: .normal)
         button.setTitle("Button", for: .normal)
        button.addTarget(self, action: #selector(self.testing), for: .touchUpInside)
        // create a imageview
        let profileImageView = UIImageView()
         profileImageView.contentMode = .scaleAspectFill
        profileImageView.layer.cornerRadius = 20
        profileImageView.clipsToBounds = true
         profileImageView.frame = CGRect(x: navigationBar.frame.width/2-60, y: 0, width: 40, height: 40)
        profileImageView.image = UIImage(named: "heart")
        // Add two elements to navigationbar
        navigationBar.addSubview(profileImageView)
        navigationBar.addSubview(button)

    

【讨论】：

感谢您的回答，它有效但现在标签旁边没有imageView，我只有nameLabel，我该如何添加它？

只需在viewwillAppear中添加点击手势就可以了

这很好用，非常感谢，但是现在即使我触摸左侧或右侧的任何图标栏，点击手势也可以工作，因为该手势在所有导航栏上都可用，你知道如何解决它?

我更新了我的代码检查一次，如果你也想要图像操作，然后用 uiimageview 替换为 uibutton

我刚刚尝试了我的框架，如果您想根据需要更改框架