FCM 点击如何在应用程序处于后台状态时打开用户指定的活动而不是默认活动

Question

FCM 工作正常，当应用程序处于前台状态时，设备上会出现通知，当点击通知时，它会重定向到我指定的 Activity，所以它工作正常。

但我的挑战是，当应用程序处于后台状态并且被点击时，它会重定向到默认活动，但我想导航到指定的活动。

这是 MyFirebaseMessagingService 类：

public class MyFirebaseMessagingService extends FirebaseMessagingService {
    private static final String TAG = "MyFirebaseMsgService";
    private String title, messageBody;

    /**
     * Called when message is received.
     *
     * @param remoteMessage Object representing the message received from Firebase Cloud Messaging.
     */
    // [START receive_message]
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        // [START_EXCLUDE]

        if (remoteMessage.getData().size() > 0) {
            Log.d(TAG, "Message data payload: " + remoteMessage.getData());
            if (remoteMessage.getData() != null && remoteMessage.getData().size() > 0) {
                title = remoteMessage.getData().get("title");
                if (TextUtils.isEmpty(title)) title = "Bocawest";
                messageBody = remoteMessage.getData().get("message");
            }
            handleNow();
        }

        // Check if message contains a notification payload.
        if (remoteMessage.getNotification() != null) {
            Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());

            sendNotification(remoteMessage.getNotification().getTitle(), remoteMessage.getNotification().getBody());
        }

        // 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.
        if (!TextUtils.isEmpty(messageBody))
            sendNotification(title, messageBody);
        //sendNotification(remoteMessage.getNotification().getBody());
        Intent intent = new Intent();
        intent.setAction("com.android.bocawest");
        sendBroadcast(intent);
    }
    // [END receive_message]

    /**
     * Handle time allotted to BroadcastReceivers.
     */
    private void handleNow() {
        Log.d(TAG, "Short lived task is done.");
    }

    /**
     * Create and show a simple notification containing the received FCM message.
     *
     * @param messageBody FCM message body received.
     */
    private void sendNotification(String title, String messageBody) {
        PendingIntent pendingIntent;
        if (SharedPreference.getBoolean(getApplicationContext(), getApplicationContext().getResources().getString(R.string.sp_isLoginIN))) {
            Intent intent = new Intent(this, NotificationsActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
                    PendingIntent.FLAG_UPDATE_CURRENT);
        } else {
            Intent intent = new Intent(this, LoginActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
                    PendingIntent.FLAG_UPDATE_CURRENT);
        }


        String channelId = getString(R.string.default_notification_channel_id);
        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder =
                new NotificationCompat.Builder(this, channelId)
                        .setSmallIcon(R.drawable.ic_launcher)
                        .setContentTitle(title)
                        .setContentText(messageBody)
                        .setAutoCancel(true)
                        .setSound(defaultSoundUri)
                        .setContentIntent(pendingIntent);

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

        // Since android Oreo notification channel is needed.
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(channelId,
                    "Bocawest",
                    NotificationManager.IMPORTANCE_DEFAULT);
            notificationManager.createNotificationChannel(channel);
        }

        notificationManager.notify(0, notificationBuilder.build());
    }
}

注意：NotificationsActivity 是我指定的活动。 HomeActivity 是默认活动

我知道有很多类似的问题，但我没有找到任何特定于我的用例的东西。 请帮帮我。

Answer 1

@Laxman parlapelly 根据 Firebase standered 当您的应用在后台收到通知并且用户点击通知时，它将仅打开默认活动。 如果你想打开你指定的活动，那么你只需要通过你的默认活动。

例如，在您的情况下，当用户点击通知时，它将打开您的 Home 活动，并且您需要从 HomeActivity 的 oncreate 方法打开 NotificationsActivity（以及需要的捆绑包）

---

当

当应用程序在后台时点击通知，然后 HomeActivity 的 onCreate() 方法将被调用，因此您可以编写代码来打开通知活动

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        animLay = findViewById(R.id.root_lay_la);
        Intent intent = new Intent(this,NotificationActivity.class);
        //intent.putExtra("KEY",getIntent().getStringExtra("data")); if u need to pass data
        startActivity(intent);
    }

Answer 2

if(SharedPreference.getBoolean(getApplicationContext(), getApplicationContext().getResources().getString(R.string.sp_isLoginIN))) 把这个逻辑写在 HomeActivity(in onCreate() before setContentView ()) 所以每次用户都将被重定向到 HomeActivity，如果满足上述条件，用户将再次被重定向到 NotificationsActivity 否则将继续使用 HomeActivity

检查 - Navigate to different activities on notification click

Answer 3

这对我有用 - 只需在onMessageReceived()中添加下面的代码

Intent intent = new Intent(this, NotificationsActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |Intent.FLAG_ACTIVITY_CLEAR_TASK);

PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "111")
.setSmallIcon(R.drawable.logo)
.setContentTitle(getString(R.string.yhnn))
.setContentText(title)
.setPriority(NotificationCompat.PRIORITY_DEFAULT)
// Set the intent that will fire when the user taps the notification
.setContentIntent(pendingIntent)
.setSound(sound)
.setAutoCancel(true);
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);

// notificationId is a unique int for each notification that you must define
notificationManager.notify(5, builder.build());