FCM点击应用处于后台状态时如何打开用户指定的活动而不是默认活动

Posted 2021-03-27

当应用程序处于前台状态时，FCM工作正常并且设备上发出通知，当通知时，它会重定向到我指定的Activity，因此它正常工作。

但我的挑战是当应用程序处于后台状态时通知到来时，当点击时，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。请帮我。

答案

@Laxman parlapelly根据Firebase standered，当您的应用在后台接收通知并且用户点击通知时，它将仅打开默认活动。如果要打开指定的活动，则必须仅通过默认活动。

例如，在用户点击通知的情况下，它将打开您的Home活动，并从HomeActivity的oncreate方法开启NotificationsActivity（以及需要捆绑包）

---

什么时候

当应用程序处于后台时会触发通知，然后将调用HomeActivity的onCreate（）方法，以便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);
    }

另一答案

if（SharedPreference.getBoolean（getApplicationContext（），getApplicationContext（）。getResources（）。getString（R.string.sp_isLoginIN）））在HomeActivity中写入此逻辑（在setContentView（）之前的onCreate（）中）所以每次用户都将重新编写 - 指向HomeActivity，如果上述条件满足，用户将再次重定向到NotificationsActivity，其他将继续使用HomeActivity

检查 - Navigate to different activities on notification click

另一答案

这对我有用 - 只需在onMessageReceived()中添加以下代码即可

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());