How to automatically decrement application badge number according to Inbox on React Native

Question:

I want to automatically decrement application badge number after the push has been read in Inbox. How to perform it for React Native framework? 

Answer:

First of all, please note that it's not possible to perform this feature on React Native level itself, so you'll need to make some adjustments on the Native code.

iOS:

1. Open your iOS project in Xcode, go to the settings, then in header search paths add "../node_modules/pushwoosh-react-native-plugin" (recursive)
2. Import "PWInbox.h" within AppDelegate.m:

#import "PWInbox.h"

    3.  Add the following string to applicationDidFinishLaunching:

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(inboxMessagesDidUpdate:) name:PWInboxMessagesDidUpdateNotification object:nil];

    4.  Add this method to AppDelegate.m

- (void)inboxMessagesDidUpdate:(NSNotification *)notification {
  [PWInbox unreadMessagesCountWithCompletion:^(NSInteger count, NSError *error) {
    [UIApplication sharedApplication].applicationIconBadgeNumber = count;
  }];
}

Android:

1.  Open MainApplication.java and add these packages:

import com.pushwoosh.inbox.PushwooshInbox;
import com.pushwoosh.inbox.event.InboxMessagesUpdatedEvent;
import com.pushwoosh.inbox.exception.InboxMessagesException;

    2.  Add the following snippet to OnCreate():

EventBus.subscribe(InboxMessagesUpdatedEvent.class, new EventListener<InboxMessagesUpdatedEvent>() {
  @Override
  public void onReceive(InboxMessagesUpdatedEvent inboxMessagesUpdatedEvent) {
    updateUnreadInboxMessages();
  }
});

     3.  Add this method:

private void updateUnreadInboxMessages() {
  PushwooshInbox.unreadMessagesCount(new Callback<Integer, InboxMessagesException>() {
    @Override
    public void process(@NonNull Result<Integer, InboxMessagesException> result) {
      if (result.isSuccess() && result.getData() != null) {
        PushwooshBadge.setBadgeNumber(result.getData());
      }
    }
  });
}

Please note that it is also possible to use methods above within your native project.