当应用程序在后台时，Sendbird推送通知

Question

这是我的查询。我已经在我的react-native应用程序之一中实现了sendbird sdk，以实现聊天。我正在尝试实施推送通知。如sendbird文档中所述，我已将react-native-firebase用于firebase推送通知。现在的问题是，我的android应用在前台运行时会收到推送通知。为此触发了OnMessageReceived（）侦听器。 但是当我的应用程序在后台运行时，我没有收到来自sendbird的任何推送通知。.没有触发任何Firebase通知侦听器。

此外，当我尝试从Firebase控制台发送通知时，我同时收到前台和后台通知。

希望收到您的答复，因为这可以帮助我成功实现此功能。

我的通知侦听器代码与此类似。但是，这里还没有添加显示通知代码。

async componentDidMount() {
  this.checkPermission();
  this.createNotificationListeners(); //Notification listener 
}

 async createNotificationListeners() {
  /*
  * Triggered when a particular notification has been received in foreground
  * */
  this.notificationListener = firebase.notifications().onNotification((notification) => {
      const { title, body } = notification;
      this.showAlert(title, body);
  });

  /*
  * If your app is in background, you can listen for when a notification is clicked / tapped / opened as follows:
  * */
  this.notificationOpenedListener = firebase.notifications().onNotificationOpened((notificationOpen) => {
      const { title, body } = notificationOpen.notification;
      this.showAlert(title, body);
  });

  /*
  * If your app is closed, you can check if it was opened by a notification being clicked / tapped / opened as follows:
  * */
  const notificationOpen = await firebase.notifications().getInitialNotification();
  if (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(JSON.stringify(message));
  });
}

showAlert(title, body) {
  Alert.alert(
    title, body,
    [
        { text: 'OK', onPress: () => console.log('OK Pressed') },
    ],
    { cancelable: false },
  );
}
}

我的AndroidManifest.xml代码如下：-

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WAE_LOCK"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

<application ....

<activity android:name="com.facebook.devsupport.DevSettingsActivity"/>
<service android:name="io.invertase.firebase.messaging.RNFirebaseMessagingService" android:exported="false">

<intent-filter>
   <action android:name="com.google.firebase.MESSAGING_EVENT"/>
</intent-filter>
</service>
<service android:name="io.invertase.firebase.messaging.RNFirebaseBackgroundMessagingService"/>

<meta-data androd:name="com.google.firebase.messaging.default_notification_icon"
androd:resource="@mipmap/ic_launcher_logo"/>

<meta-data androd:name="com.google.firebase.messaging.default_notification_channel_id"
androd:value="test-channel"/>

</application>

Answer 1

对于Android，将"priority": "high"设置为通知有效载荷

{
  "to": "cjUyGxLa3pU...",
  "data": {
    "title": "Some title",
    "body": "Some text"
  },
  "priority": "high"
}

对于ios，我认为它可以通过在AppDelegate.m中使用以下代码来获取后台通知和前台通知：

#import <UserNotifications/UserNotifications.h>
#import <Firebase.h>
#import <FirebaseInstanceID/FirebaseInstanceID.h>
#import <FirebaseMessaging.h>

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
if ([FIRApp defaultApp] == nil) {
    [FIRApp configure];
  }

if ([UNUserNotificationCenter class] != nil) {
    // iOS 10 or later
    // For iOS 10 display notification (sent via APNS)
    [UNUserNotificationCenter currentNotificationCenter].delegate = self;
    UNAuthorizationOptions authOptions = UNAuthorizationOptionAlert |
    UNAuthorizationOptionSound | UNAuthorizationOptionBadge;
    [[UNUserNotificationCenter currentNotificationCenter]
    requestAuthorizationWithOptions:authOptions
    completionHandler:^(BOOL granted, NSError * _Nullable error) {
    // …
    }];
   } else {
    // iOS 10 notifications aren’t available; fall back to iOS 8–9 notifications.
    UIUserNotificationType allNotificationTypes =
    (UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge);
    UIUserNotificationSettings *settings =
    [UIUserNotificationSettings settingsForTypes:allNotificationTypes categories:nil];
    [application registerUserNotificationSettings:settings];
   }
  [application registerForRemoteNotifications];
  [FIRMessaging messaging].delegate = self;
  [[FIRInstanceID instanceID] instanceIDWithHandler:^(FIRInstanceIDResult * _Nullable result,
    NSError * _Nullable error) {
      if (error != nil) {
        NSLog(@"Error fetching remote instance ID: %@", error);
      } else {
        NSLog(@"Remote instance ID token: %@", result.token);
        NSString* message = [NSString stringWithFormat:@"Remote InstanceID token: %@", result.token];
      }
    }
  ];
  [FIRMessaging messaging].autoInitEnabled = YES;

...
}

- (void)messaging:(FIRMessaging *)messaging didReceiveRegistrationToken:(NSString *)fcmToken {
  NSLog(@"FCM registration token: %@", fcmToken);
  NSDictionary *dataDict = [NSDictionary dictionaryWithObject:fcmToken forKey:@"token"];
  [[NSNotificationCenter defaultCenter] postNotificationName: @"FCMToken" object:nil userInfo:dataDict];
}

/Called when a notification is delivered to a foreground app.
-(void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler
{
  completionHandler(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge);
}

还删除了FirebaseAppDelegateProxyEnabled: YES中的Info.plist，如果您在info.plist上没有此键，则可以先进行尝试，然后再更改AppDelegate.m

注意：：1.5年前，我使用了相同的react-native-firebase库，但收到了同样的问题，因为后来我移到react-native-fcm库，因为该库维护得很好

Answer 2

因此，经过大量的研究，最终我通过参考Sendbird的示例应用程序成功粘贴了解决方案，并粘贴了下面的链接。

https://github.com/sendbird/SendBird-JavaScript/tree/master/react-native-redux-sample

解决方案：-

您需要在App中注册频道。 Js componentDidMount（）。

//应用js代码

componentDidMount(){
const channel = new firebase.notification.Android.Channel(
"YOUR-CHANNEL-ID",
"CHANNEL NAME",
firebase.notification.Android.Importance.Max).setDescription("description);
firebase.notifications().android.createChannel(chanel);


//don't forget to add handler for app state change
Appstate.addEventListener('change',this._handleAppStateChange);

)
}

_handleAppStateChange = currentAppState =>{
  const sb = SendBird.getInstance();
if(sb)
{
   if(currentAppState == "active")
  {
     sb.setForegroundState();
  }
else if(currentAppState == "background")
{
   sb.setBackgroundState();
}
}

// NOW现在在主index.js中添加以下行

import backgroundPush from './Services/push';

AppRegistry.registerHeadlessTask('RNFirebaseBackgroundMessage',()=>backgroundPush) //add this line after appRegistry Component and this is a key to be added to get notitification in background when using sendbird, whicch is nowhere mentioned in its official doc. It is in the sample App I have also added link to it.

导入的push / backgroundPush是一个包含以下源代码的文件：-

push.js //此文件仍在示例应用程序中

import firebase from 'react-native-firebase'

export default async message => {
  try {
    const text = message.data.message;
    const payload = JSON.parse(message.data.sendbird);
    const localNotification = new firebase.notifications.Notification({
      show_in_foreground: true
    }).android
      .setChannelId('channel_id')
      .android.setSmallIcon('sendbird_ic_notification')
      .android.setPriority(firebase.notifications.Android.Priority.High)
      .setNotificationId(message.messageId)
      .setTitle('New message')
      .setSubtitle(`Unread message: ${payload.unread_message_count}`)
      .setBody(text)
      .setData(payload);
    return firebase.notifications().displayNotification(localNotification);
  } catch (e) {
    return Promise.resolve();
  }
};

这是我未收到查询Android后台推送通知的解决方案。尽管，仍在努力接收iOS推送通知。

谢谢。