Firebase 通知和数据

Question

我正在使用 Firebase 云消息传递 API 创建应用程序...我能够从服务器向我的客户端应用程序发送通知和数据。 但问题是当应用程序打开时，通知没有在数据出现时触发（我的意思是我记录了它）这不是问题。但是当应用程序关闭时，会收到通知，当我单击通知时，活动已打开，而我看不到日志数据。我需要将数据更新到 TextView..

我的 MyFirebaseMessagingService ：

public void onMessageReceived(RemoteMessage remoteMessage) {
        // TODO: Handle FCM messages here.
        // If the application is in the foreground handle both data and notification messages here.
        // Also if you intend on generating your own notifications as a result of a received FCM
        // message, here is where that should be initiated.
        Log.d(TAG, "From: " + remoteMessage.getFrom());
        Log.d(TAG, "Notification Message Body: " + remoteMessage.getNotification().getBody());
        Log.e("FROM", "From: " + remoteMessage.getFrom());
        String data = remoteMessage.getData().get("message");
        Log.e("KOIII", "Notification Message Body: " + remoteMessage.getNotification().getBody());
       // showNotificationS(remoteMessage.getNotification().getBody(),2);
        if(data.equals("true")){
            Log.e("DATA", "SUCCESS");
           // Fragment1.getInstace().updateTheTextView(data, data, data);
        }
    }

我的清单：

<activity
            android:name=".SplashScreen"
            android:label="@string/app_name"
            android:launchMode="singleInstance">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".myHome"
            android:label="@string/app_name">
        </activity>
<service android:name=".MyFirebaseMessagingService">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT"/>
            </intent-filter>
        </service>
        <service android:name=".FirebaseIDService">
            <intent-filter>
                <action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
            </intent-filter>
        </service>

Answer 1

当您发送带有数据负载（通知和数据）的通知消息并且应用程序在后台时，您可以从由于用户点击通知而启动的额外意图中检索数据。

来自FCM sample，它在点击通知时启动 MainActivity：

if (getIntent().getExtras() != null) {
    for (String key : getIntent().getExtras().keySet()) {
        Object value = getIntent().getExtras().get(key);
        Log.d(TAG, "Key: " + key + " Value: " + value);
    }
}

Answer 2

如果您的应用在前台，FCM 将不会显示通知，因此您手动显示如下：-

@Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        // TODO(developer): Handle FCM messages here.
        // If the application is in the foreground handle both data and notification messages here.
        // Also if you intend on generating your own notifications as a result of a received FCM
        // message, here is where that should be initiated. See sendNotification method below.
        Log.d(TAG, "From: " + remoteMessage.getFrom());
        Log.d(TAG, "From: " + remoteMessage.getData().get("message"));
//        Log.d(TAG, "Notification Message Body: " + remoteMessage.getNotification().getBody());
        sendNotification(remoteMessage.getData().get("message"));
    }
    // [END receive_message]

    /**
     * Create and show a simple notification containing the received FCM message.
     *
     * @param messageBody FCM message body received.
     */
    private void sendNotification(String messageBody) {
        Intent intent = new Intent(this, MarketActivity.class);
//        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
                PendingIntent.FLAG_ONE_SHOT);

        Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.ic_launcher)
                .setContentTitle("Fred Notification")
                .setContentText(messageBody)
                .setAutoCancel(true)
                .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
                .setContentIntent(pendingIntent);

        NotificationManager notificationManager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
    }