如何发送和接收Windows Phone 8.1的推送通知

我关注微软在Windows Phone 8.0上发送和接收推送通知的文章：

https://msdn.microsoft.com/en-us/library/windows/apps/hh202967(v=vs.105).aspx

它工作正常，但现在我们正在创建一个新的Windows Phone 8.1应用程序并尝试重写相同的8.0代码，但WP 8.1中没有一些类。

请帮助我如何为Windows Phone 8.1实现这些function。

Answer 1

这是我用来接收推送通知和处理ChannelUri 。 只需调用UpdateChannelUri方法即可。 如果需要，将更新ChannelUriUpdated并触发ChannelUriUpdated事件，并将相同的内容保存到应用程序数据设置中。

如果您的应用程序正在运行并且您收到通知，则将执行包含通知内容的四种方法之一，由通知类型确定。

 public sealed class PushService { private const string ChannelUriKey = "ChannelUri"; private const string ChannelUriDefault = null; private PushNotificationChannel _channel; private string _channelUri; /// 
 /// Initializes a new instance of the  class. /// 
 public PushService() { this._channelUri = LocalSettingsLoad(ApplicationData.Current.LocalSettings, ChannelUriKey, ChannelUriDefault); } /// 
 /// Gets the push notification channel URI. If no channel URI was yet created /// then the value will be null. /// 
 public string ChannelUri { get { return _channelUri; } private set { if (_channelUri != value) { this._channelUri = value; LocalSettingsStore(ApplicationData.Current.LocalSettings, ChannelUriKey, value); } } } /// 
 /// Requests a new push channel URI. /// 
 public async Task UpdateChannelUri() { var retries = 3; var difference = 10; // In seconds var currentRetry = 0; do { try { _channel = await PushNotificationChannelManager.CreatePushNotificationChannelForApplicationAsync(); _channel.PushNotificationReceived += OnPushNotificationReceived; if (!_channel.Uri.Equals(ChannelUri)) { ChannelUri = _channel.Uri; // TODO send channel uri to your server to your server this.RaiseChannelUriUpdated(); return _channel.Uri; } } catch { // Could not create a channel } await Task.Delay(TimeSpan.FromSeconds(difference)); } while (currentRetry++ < retries); return null; } private void OnPushNotificationReceived(PushNotificationChannel sender, PushNotificationReceivedEventArgs args) { switch (args.NotificationType) { case PushNotificationType.Badge: this.OnBadgeNotificationReceived(args.BadgeNotification.Content.GetXml()); break; case PushNotificationType.Tile: this.OnTileNotificationReceived(args.TileNotification.Content.GetXml()); break; case PushNotificationType.Toast: this.OnToastNotificationReceived(args.ToastNotification.Content.GetXml()); break; case PushNotificationType.Raw: this.OnRawNotificationReceived(args.RawNotification.Content); break; } args.Cancel = true; } private void OnBadgeNotificationReceived(string notificationContent) { // Code when a badge notification is received when app is running } private void OnTileNotificationReceived(string notificationContent) { // Code when a tile notification is received when app is running } private void OnToastNotificationReceived(string notificationContent) { // Code when a toast notification is received when app is running // Show a toast notification programatically var xmlDocument = new XmlDocument(); xmlDocument.LoadXml(notificationContent); var toastNotification = new ToastNotification(xmlDocument); //toastNotification.SuppressPopup = true; ToastNotificationManager.CreateToastNotifier().Show(toastNotification); } private void OnRawNotificationReceived(string notificationContent) { // Code when a raw notification is received when app is running } public event EventHandler ChannelUriUpdated; private void RaiseChannelUriUpdated() { if (ChannelUriUpdated != null) { ChannelUriUpdated(this, new EventArgs()); } } public static T LocalSettingsLoad(ApplicationDataContainer settings, string key, T defaultValue) { T value; if (settings.Values.ContainsKey(key)) { value = (T)settings.Values[key]; } else { // Otherwise use the default value. value = defaultValue; } return value; } public static bool LocalSettingsStore(ApplicationDataContainer settings, string key, object value) { bool valueChanged = false; if (settings.Values.ContainsKey(key)) { // If the key exists if (settings.Values[key] != value) { // If the value has changed, store the new value settings.Values[key] = value; valueChanged = true; } } else { // Otherwise create the key settings.Values.Add(key, value); valueChanged = true; } return valueChanged; } }