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

Question

我正尝试按照这篇文章在 React Native 中使用 Firebase 控制台应用程序实现推送通知:

React Native: Integrating Push Notifications using FCM

在 Android 中，我可以在应用程序处于后台但无法在前台接收通知时接收通知。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()根本没有被触发。

在其他解决方案中，这是因为从 Android 8 开始您需要创建一个 channel ，但我在从 FCM 发送通知时找不到任何创建 channel 的选项 notification composer .

Answer 1

阿卜杜勒，

您需要在设备上使用 firebase 创建通知 channel 。

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 channel ，您可以安全地调用任意多次(根据文档)。你的 onNotification 监听器看起来不错，你只需要在收到的通知上设置 android channel 。

  notification.android.setChannelId('default')