在视图控制器之间传递数据

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if let destinationVC = segue.destination as? DestinationViewController {
        destinationVC.data = self.data
    }
}

protocol DataDelegate {
    func passData(data: Any)
}

class SourceViewController: UIViewController {
    var delegate: DataDelegate?
    
    func passData() {
        delegate?.passData(data: self.data)
    }
}

class DestinationViewController: UIViewController, DataDelegate {
    func passData(data: Any) {
        // 处理传递的数据
    }
}

// 发送通知
NotificationCenter.default.post(name: NSNotification.Name(rawValue: "PassDataNotification"), object: nil, userInfo: ["data": self.data])

// 接收通知
NotificationCenter.default.addObserver(self, selector: #selector(receiveData(notification:)), name: NSNotification.Name(rawValue: "PassDataNotification"), object: nil)

@objc func receiveData(notification: Notification) {
    if let data = notification.userInfo?["data"] {
        // 处理传递的数据
    }
}

class DataManager {
    static let shared = DataManager()
    
    var data: Any?
}

// 存储数据
DataManager.shared.data = self.data

// 获取数据
if let data = DataManager.shared.data {
    // 处理传递的数据
}