Inconsistent value received in Activity after clicking on notification

I have encountered an issue where I'm trying to pass a value from a notification to an Activity using an intent extra. However, upon clicking on the notification and accessing the value in the Activity's onCreate method, the received value differs from the one I originally sent. I'm seeking assistance in understanding and resolving this problem.

Here's the relevant code snippet responsible for creating the notification and passing the value:

Intent intent = new Intent(context, ChatActivity.class);
intent.putExtra(ChatActivity.CURRENT_CHAT_EXTRA, chatNotifications.getTopic());
PendingIntent actionIntent = PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_IMMUTABLE);

NotificationCompat.Builder builder = new NotificationCompat.Builder(context, AppController.CHAT_CHANNEL)
    .setContentIntent(actionIntent);

In the ChatActivity class, I'm retrieving the value in the onCreate method as follows:

topic = getIntent().getStringExtra(CURRENT_CHAT_EXTRA);

The issue is that topic ends up with a different value than what was originally sent.

Why might this discrepancy be occurring and how can I resolve it?

It appears that I am encountering this issue where the value received in your Activity differs from the one originally sent via the notification's intent extra. To resolve this problem, you can make use of a unique requestCode for each PendingIntent to ensure that the intent extras are received correctly.

You can modify your code as follows:

Intent intent = new Intent(context, ChatActivity.class);
intent.putExtra(ChatActivity.CURRENT_CHAT_EXTRA, chatNotifications.getTopic());

// Generate a unique requestCode based on the topic
int requestCode = chatNotifications.getTopic().hashCode();

PendingIntent actionIntent = PendingIntent.getActivity(context, requestCode, intent, PendingIntent.FLAG_IMMUTABLE);

NotificationCompat.Builder builder = new NotificationCompat.Builder(context, AppController.CHAT_CHANNEL)
    .setContentIntent(actionIntent);

By using chatNotifications.getTopic().hashCode() as the requestCode, you create a unique identifier for each PendingIntent. This ensures that each notification click will create a separate PendingIntent and the intent extra will be correctly received in your Activity's onCreate method.

Make sure to adjust your receiving code in the ChatActivity class accordingly:

topic = getIntent().getStringExtra(ChatActivity.CURRENT_CHAT_EXTRA);

By implementing this approach, you should be able to resolve the issue of receiving different values in your Activity compared to what was originally sent from the notification.