我在我的应用程序非常小的聊天。每当用户接收到消息时,服务器发送的通知。在的appDelegate我已经实现代码如下:
@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
completionHandler(.alert)
// print(UNNotificationAction)
print("📲📲📲 recieved")
if notification.request.content.title.contains("Message")
{
print("sub")
print(notification.request.content.subtitle)
print("body")
print(notification.request.content.body)
print("it containt DM ⏰")
let storyboard:UIStoryboard = UIStoryboard(name:"Chat", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "chatRoomVc") as! ChatRoomViewController
vc.becomeFirstResponder()
vc.setRefreshListener {
print("triggered")
}
}
}
每当它运行时,它会调用API并获取聊天数据。下面的代码展示了如何获取数据:
func setRefreshListener(listener:@escaping ()->Void){
refreshListener = listener
presenter.getttingChatRoomData(aptId: UserDefaults.standard.string(forKey: userAPTID)!, id: UserDefaults.standard.string(forKey: userID)!)
presenter.attachView(view: self)
super.loadView()
super.reloadInputViews()
tableView.reloadData()
}
此外,我可以正常获取数据。
问题是,它不重新加载数据为表视图!!
没有任何人有任何解决方案为什么会这样?
更新:下面运行的代码时,接收到的数据:
func gettingUserChatWithSUCCESS(responce: [chatRomModel]) {
print("✅ getting chat room data SUCCESS")
data = responce
tableView.reloadData()
}
您可以使用解决观察者通知这个问题,就像遵循这个代码。
新增通知观察者在你的ViewController
NotificationCenter.default.addObserver(self, selector: #selector(onReceiveData(_:)), name: "ReceiveData", object: nil)
@objc func onReceiveData(_ notification:Notification) {
// Do something now //reload tableview
}
在appDelegate.swift
文件中使用此代码调用观察者收到通知方法
NotificationCenter.default.post(name: Notification.Name("ReceiveData"), object: nil)
注: - 删除通知观察者,当你的ViewController会消失,使用此代码
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
NotificationCenter.default.removeObserver(self, name: "ReceiveData", object: nil)
}
实施UNUserNotificationCenterDelegate
方法并发布您的通知。
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse,
withCompletionHandler completionHandler: @escaping () -> Void) {
let userInfo = response.notification.request.content.userInfo
if UIApplication.shared.applicationState == .background || UIApplication.shared.applicationState == .inactive {
NotificationCenter.default.post(name: .newMessage, object: nil, userInfo:userInfo)
}
}
在你看来控制器添加一个观察者来检查的通知(添加您自己的选择方法。)
NotificationCenter.default.addObserver(self,
selector: #selector(updateMessages(notification:)),
name: .newMessage,
object: nil)
@objc func updateMessages(notification: NSNotification) {
// Handle your notifications...
}