React Native - 无法在 Android 前台访问 Firebase 推送通知

Question

我正在尝试通过遵循本文来实现用firebase Console App中的React Native中的推送通知：

React Native：使用FCM

集成推送通知

在Android中，当应用在后台但无法在前景中接收时，我可以收到通知。使用此方法接收通知：

async createNotificationListeners() {
  /*
   * Triggered when a particular notification has been received in foreground
   * */
  this.notificationListener = firebase
    .notifications()
    .onNotification(notification => {
      console.log("fg", notification);
      const { title, body } = notification;
      this.showAlert(title, body);
    });
  /*
   * If app is in background, listen for when a notification is clicked / tapped / opened as follows:
   * */
  this.notificationOpenedListener = firebase
    .notifications()
    .onNotificationOpened(notificationOpen => {
      console.log("bg", notificationOpen);
      const { title, body } = notificationOpen.notification;
      this.showAlert(title, body);
    });
  /*
   * If app is closed, check if it was opened by a notification being clicked / tapped / opened as follows:
   * */
  const notificationOpen = await firebase
    .notifications()
    .getInitialNotification();
  if (notificationOpen) {
    console.log("bg", notificationOpen);
    const { title, body } = notificationOpen.notification;
    this.showAlert(title, body);
  }
  /*
   * Triggered for data only payload in foreground
   * */
  this.messageListener = firebase.messaging().onMessage(message => {
    //process data message
    console.log("fg", JSON.stringify(message));
  });
}

在这里， firebase.notifications().onNotification 或 firebase.messaging().onMessage() 根本没有触发。

在其他解决方案中，这是因为从Android 8中您需要创建一个频道，但是我在从FCM Notification Composer发送通知时找不到任何选项。

Answer 1

abdul，

您需要使用设备上的firebase进行通知通道。

const channel = new firebase.notifications.Android
  .Channel('default', 'Default Channel', firebase.notifications.Android.Importance.Max)
  .setDescription('The default notification channel.')
firebase.notifications().android.createChannel(channel)

这将创建频道，您可以按照自己的安全方式称呼它多次（根据文档）。您的通知侦听器看起来不错，您只需要在包含的通知上设置Android频道。

  notification.android.setChannelId('default')