如何知道用户是否点击了通知？

import UserNotifications

UNUserNotificationCenter.current().delegate = self

extension YourViewController: UNUserNotificationCenterDelegate {
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        if response.actionIdentifier == UNNotificationDefaultActionIdentifier {
            // 用户点击了通知
            print("用户点击了通知")
        }
        completionHandler()
    }
}

import android.app.NotificationChannel
import android.app.NotificationManager
import android.content.Intent
import androidx.core.app.NotificationCompat
import androidx.core.app.RemoteInput

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        val channelId = "your_channel_id"

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val channel = NotificationChannel(channelId, "Channel Name", NotificationManager.IMPORTANCE_DEFAULT)
            notificationManager.createNotificationChannel(channel)
        }

        val intent = Intent(this, TargetActivity::class.java)
        val pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)

        val notification = NotificationCompat.Builder(this, channelId)
            .setContentTitle("Title")
            .setContentText("Content")
            .setSmallIcon(R.drawable.ic_notification)
            .setContentIntent(pendingIntent)
            .build()

        notificationManager.notify(1, notification)
    }
}

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
    if let aps = userInfo["aps"] as? [String: AnyObject], aps["content-available"] as? Int == 1 {
        // 处理后台数据更新
    } else {
        // 用户点击了通知
        print("用户点击了远程通知")
    }
    completionHandler(.newData)
}

override fun onNewIntent(intent: Intent?) {
    super.onNewIntent(intent)
    if (intent?.extras?.getBoolean("notification_clicked", false) == true) {
        // 用户点击了通知
        println("用户点击了远程通知")
    }
}