Listen to auth events

AWS Cognito Auth Plugin sends important events through Amplify Hub.

Amplify Android v1 is now in Maintenance Mode until May 31st, 2024. This means that we will continue to include updates to ensure compatibility with backend services and security. No new features will be introduced in v1.

Please use the latest version (v2) of Amplify Library for Android to get started.

If you are currently using v1, follow these instructions to upgrade to v2.

Amplify libraries should be used for all new cloud connected applications. If you are currently using the AWS Mobile SDK for Android, you can access the documentation here.

1Amplify.Hub.subscribe(HubChannel.AUTH,
2      hubEvent -> {
3          if (hubEvent.getName().equals(InitializationStatus.SUCCEEDED.toString())) {
4              Log.i("AuthQuickstart", "Auth successfully initialized");
5          } else if (hubEvent.getName().equals(InitializationStatus.FAILED.toString())){
6              Log.i("AuthQuickstart", "Auth failed to succeed");
7          } else {
8              switch (AuthChannelEventName.valueOf(hubEvent.getName())) {
9                  case SIGNED_IN:
10                      Log.i("AuthQuickstart", "Auth just became signed in.");
11                      break;
12                  case SIGNED_OUT:
13                      Log.i("AuthQuickstart", "Auth just became signed out.");
14                      break;
15                  case SESSION_EXPIRED:
16                      Log.i("AuthQuickstart", "Auth session just expired.");
17                      break;
18                  case USER_DELETED:
19                      Log.i("AuthQuickstart", "User has been deleted.");
20                      break;
21                  default:
22                      Log.w("AuthQuickstart", "Unhandled Auth Event: " + AuthChannelEventName.valueOf(hubEvent.getName()));
23                      break;
24              }
25          }
26      }
27);

1Amplify.Hub.subscribe(HubChannel.AUTH) { event ->
2    when (event.name) {
3        InitializationStatus.SUCCEEDED.toString() ->
4            Log.i("AuthQuickstart", "Auth successfully initialized")
5        InitializationStatus.FAILED.toString() ->
6            Log.i("AuthQuickstart", "Auth failed to succeed")
7        else -> when (AuthChannelEventName.valueOf(event.name)) {
8            AuthChannelEventName.SIGNED_IN ->
9                Log.i("AuthQuickstart", "Auth just became signed in")
10            AuthChannelEventName.SIGNED_OUT ->
11                Log.i("AuthQuickstart", "Auth just became signed out")
12            AuthChannelEventName.SESSION_EXPIRED ->
13                Log.i("AuthQuickstart", "Auth session just expired")
14            AuthChannelEventName.USER_DELETED ->
15                Log.i("AuthQuickstart", "User has been deleted")
16            else ->
17                Log.w("AuthQuickstart", "Unhandled Auth Event: ${event.name}")
18        }
19    }
20}

1Amplify.Hub.subscribe(HubChannel.AUTH).collect {
2    when (it.name) {
3        InitializationStatus.SUCCEEDED.toString() ->
4            Log.i("AuthQuickstart", "Auth successfully initialized")
5        InitializationStatus.FAILED.toString() ->
6            Log.i("AuthQuickstart", "Auth failed to succeed")
7        else -> when (AuthChannelEventName.valueOf(it.name)) {
8            AuthChannelEventName.SIGNED_IN ->
9                Log.i("AuthQuickstart", "Auth just became signed in.")
10            AuthChannelEventName.SIGNED_OUT ->
11                Log.i("AuthQuickstart", "Auth just became signed out.")
12            AuthChannelEventName.SESSION_EXPIRED ->
13                Log.i("AuthQuickstart", "Auth session just expired.")
14            AuthChannelEventName.USER_DELETED ->
15                Log.i("AuthQuickstart", "User has been deleted.")
16        }
17    }
18}

1RxAmplify.Hub.on(HubChannel.AUTH)
2    .map(HubEvent::getName)
3    .subscribe(name -> {
4        if (name.equals(InitializationStatus.SUCCEEDED.toString())) {
5            Log.i("AuthQuickstart", "Auth successfully initialized");
6            return;
7        } else if (name.equals(InitializationStatus.FAILED.toString())) {
8            Log.i("AuthQuickstart", "Auth failed to succeed");
9            return;
10        }
11        switch (AuthChannelEventName.valueOf(name)) {
12            case SIGNED_IN:
13                Log.i("AuthQuickstart", "Auth just became signed in.");
14                break;
15            case SIGNED_OUT:
16                Log.i("AuthQuickstart", "Auth just became signed out.");
17                break;
18            case SESSION_EXPIRED:
19                Log.i("AuthQuickstart", "Auth session just expired.");
20                break;
21            case USER_DELETED:
22                Log.i("AuthQuickstart", "User has been deleted.");
23                break;
24            default:
25                Log.w("AuthQuickstart", "Unhandled Auth Event: " + AuthChannelEventName.valueOf(name));
26                break;
27        }
28    });

Use existing Amazon Cognito resources

Use AWS SDK