Our new user-centric APIs and v5.x.x SDKs offer an improved user and data management experience. However, they may not be at 1:1 feature parity with our previous versions yet.
If you are migrating an existing app, we suggest using iOS and Android’s Phased Rollout capabilities to ensure that there are no unexpected issues or edge cases. Here is the documentation for each:
If you run into any challenges or have concerns, please contact our support team at [email protected]
In this release, we are making a significant shift from a device-centered model to a user-centered model. A user-centered model allows for more powerful omni-channel integrations within the OneSignal platform.
To facilitate this change, the externalId approach for identifying users is being replaced by the login and logout methods. In addition, the SDK now makes use of namespaces such as User, Notifications, and InAppMessages to better separate code.
This migration guide will walk you through the Flutter SDK changes as a result of this shift.
Under the user-centered model, the concept of a "player" is being replaced with three new concepts: users, subscriptions, and aliases.
A user is a new concept which is meant to represent your end-user. A user has zero or more subscriptions and can be uniquely identified by one or more aliases. In addition to subscriptions, a user can have data tags which allows for user attribution.
A subscription refers to the method in which an end-user can receive various communications sent by OneSignal, including push notifications, SMS, and email. In previous versions of the OneSignal platform, each of these channels was referred to as a “player”. A subscription is in fact identical to the legacy “player” concept. Each subscription has a subscription_id (previously, player_id) to uniquely identify that communication channel.
Aliases are a concept evolved from external user ids which allows the unique identification of a user within a OneSignal application. Aliases are a key-value pair made up of an alias label (the key) and an alias id (the value). The alias label can be thought of as a consistent keyword across all users, while the alias id is a value specific to each user for that particular label. The combined alias label and alias id provide uniqueness to successfully identify a user.
OneSignal uses a built-in alias label called external_id which supports existing use of external user ids. external_id is also used as the identification method when a user identifies themselves to the OneSignal SDK via OneSignal.login. Multiple aliases can be created for each user to allow for your own application's unique identifier as well as identifiers from other integrated applications.
The Flutter SDK accesses the OneSignal native iOS and Android SDKs. For this update, all SDK versions are aligning across OneSignal’s suite of client SDKs. As such, the Flutter SDK is making the jump from v3 to v5.
Objective-C
// Replace the old import statement
#import <OneSignal/OneSignal.h>
// With the new import statement
#import <OneSignalFramework/OneSignalFramework.h>Swift
// Replace the old import statement
import OneSignal
// With the new import statement
import OneSignalFrameworkUpdate your podfile to use 5.0.0+ of the OneSignalXCFramework pod
target 'OneSignalNotificationServiceExtension' do
use_frameworks!
pod 'OneSignalXCFramework', '>= 5.0.0', '< 6.0'
end
The OneSignal SDK has been updated to be more modular in nature. The SDK has been split into namespaces, and functionality previously in the static OneSignal class has been moved to the appropriate namespace. The namespaces and how to access them in code are as follows:
| Namespace | Access Pattern |
|---|---|
| Debug | OneSignal.Debug |
| InAppMessages | OneSignal.InAppMessages |
| Location | OneSignal.Location |
| Notifications | OneSignal.Notifications |
| Session | OneSignal.Session |
| User | OneSignal.User |
| LiveActivities | OneSignal.LiveActivities |
| OneSignal | OneSignal |
Initialization of the OneSignal SDK is now completed through the initialize method. A typical initialization now looks similar to below.
Navigate to your main.dart file, or the first dart file that loads with your app.
Replace the following:
Flutter
OneSignal.shared.setAppId("YOUR_ONESIGNAL_APP_ID");To the match the new initialization:
Flutter
OneSignal.initialize("YOUR_ONESIGNAL_APP_ID");Remove any usages of setLaunchURLsInApp as the method and functionality has been removed.
If your integration is not user-centric, there is no additional startup code required. A device-scoped user (please see definition of “device-scoped user” below in Glossary) is automatically created as part of the push subscription creation, both of which are only accessible from the current device or through the OneSignal dashboard.
If your integration is user-centric, or you want the ability to identify the user beyond the current device, the login method should be called to identify the user:
Flutter
OneSignal.login("EXTERNAL_ID");The login method will associate the device’s push subscription to the user that can be identified via the alias externalId=EXTERNAL_ID. If that user doesn’t already exist, it will be created. If the user does already exist, the user will be updated to own the device’s push subscription. Note that the push subscription for the device will always be transferred to the newly logged in user, as that user is the current owner of that push subscription.
Once (or if) the user is no longer identifiable in your app (i.e. they logged out), the logout method should be called:
Flutter
OneSignal.logout();Logging out has the affect of reverting to a device-scoped user, which is the new owner of the device’s push subscription.
In previous versions of the SDK, a “player” could have up to one email address and up to one phone number for SMS. In the user-centered model, a user can own the current device’s Push Subscription along with the ability to have zero or more email subscriptions and zero or more SMS subscriptions. Note: If a new user logs in via the login method, the previous user will no longer own that push subscription.
The current device’s push subscription can be retrieved via:
Flutter
var id = OneSignal.User.pushSubscription.id;
var token = OneSignal.User.pushSubscription.token;
var optedIn = OneSignal.User.pushSubscription.optedIn;To receive push notifications on the device, call the push subscription’s optIn method. If needed, this method will prompt the user for push notifications permission.
Flutter
OneSignal.User.pushSubscription.optIn();If at any point you want the user to stop receiving push notifications on the current device (regardless of system-level permission status), you can use the push subscription to opt out:
Flutter
OneSignal.User.pushSubscription.optOut();To resume receiving of push notifications (driving the native permission prompt if permissions are not available), you can opt back in with the optIn method from above.
Email and/or SMS subscriptions can be added or removed via the following methods. The remove methods will result in a no-op if the specified email or SMS number does not exist on the user within the SDK, and no request will be made.
Flutter
// Add email subscription
OneSignal.User.addEmail("[email protected]");
// Remove previously added email subscription
OneSignal.User.removeEmail("[email protected]");
// Add SMS subscription
OneSignal.User.addSms("+15558675309");
// Remove previously added SMS subscription
OneSignal.User.removeSms("+15558675309");Below is a comprehensive reference to the 5.0.0 OneSignal Flutter SDK.
The SDK is still accessible via a OneSignal static class. It provides access to higher level functionality and is a gateway to each subspace of the SDK.
| Flutter | Description |
|---|---|
OneSignal.initialize("YOUR_ONESIGNAL_APP_ID"); |
Initializes the OneSignal SDK. This should be called during startup of the application. |
OneSignal.login("USER_EXTERNAL_ID"); |
Login to OneSignal under the user identified by the [externalId] provided. The act of logging a user into the OneSignal SDK will switch the [user] context to that specific user. - If the [externalId] exists, the user will be retrieved and the context will be set from that user information. If operations have already been performed under a device-scoped user, they will not be applied to the now logged in user (they will be lost). - If the [externalId] does not exist the user, the user will be created and the context set from the current local state. If operations have already been performed under a device-scoped user, those operations will be applied to the newly created user. Push Notifications and In App Messaging Logging in a new user will automatically transfer the push notification and in app messaging subscription from the current user (if there is one) to the newly logged in user. This is because both push notifications and in- app messages are owned by the device. |
OneSignal.logout(); |
Logout the user previously logged in via [login]. The [user] property now references a new device-scoped user. A device-scoped user has no user identity that can later be retrieved, except through this device as long as the app remains installed and the app data is not cleared. |
OneSignal.consentRequired(true); |
Determines whether a user must consent to privacy prior to their user data being sent up to OneSignal. This should be set to true prior to the invocation of initialize to ensure compliance. |
OneSignal.consentGiven(true); |
Sets whether a user has consented to privacy prior to their user data being sent up to OneSignal. |
Live Activities are a type of interactive push notification. Apple introduced them in October 2022 to enable iOS apps to provide real-time updates to their users that are visible from the lock screen and the dynamic island.
| Flutter | Description |
|---|---|
OneSignal.LiveActivities.enterLiveActivity("ACTIVITY_ID", "TOKEN");See below for usage of callbacks |
(iOS only) Entering a Live Activity associates an activityId with a live activity temporary push token on OneSignal's server. The activityId is then used with the OneSignal REST API to update one or multiple Live Activities at one time. |
OneSignal.LiveActivities.exitLiveActivity("ACTIVITY_ID");See below for usage of callbacks |
(iOS only) Exiting a Live activity deletes the association between a customer defined activityId with a Live Activity temporary push token on OneSignal's server. |
Please refer to OneSignal’s guide on Live Activities, the Live Activities Quickstart tutorial, and the existing SDK reference on Live Activities.
The User name space is accessible via OneSignal.User and provides access to user-scoped functionality.
| Flutter | Description |
|---|---|
OneSignal.User.setLanguage("en"); |
Set the 2-character language for this user. |
OneSignal.User.addObserver(OnUserChangeObserver observer); See below for usage |
Add a User State observer which contains the nullable onesignalId and externalId. The listener will be fired when these values change. |
await OneSignal.User.getOnesignalId(); |
Returns the nullable OneSignal ID for the current user. |
await OneSignal.User.getExternalId(); |
Returns the nullable External ID for the current user. |
OneSignal.User.addAlias("ALIAS_LABEL", "ALIAS_ID"); |
Set an alias for the current user. If this alias label already exists on this user, it will be overwritten with the new alias id. |
OneSignal.User.addAliases({ALIAS_LABEL_01: "ALIAS_ID_01", ALIAS_LABEL_02: "ALIAS_ID_02"}); |
Set aliases for the current user. If any alias already exists, it will be overwritten to the new values. |
OneSignal.User.removeAlias("ALIAS_LABEL"); |
Remove an alias from the current user. |
OneSignal.User.removeAliases(["ALIAS_LABEL_01", "ALIAS_LABEL_02"]] |
Remove aliases from the current user. |
OneSignal.User.addEmail("[email protected]"); |
Add a new email subscription to the current user. |
OneSignal.User.removeEmail("[email protected]"); |
Results in a no-op if the specified email does not exist on the user within the SDK, and no request will be made. |
OneSignal.User.addSms("+15558675309"); |
Add a new SMS subscription to the current user. |
OneSignal.User.removeSms("+15558675309"); |
Results in a no-op if the specified phone number does not exist on the user within the SDK, and no request will be made.. |
OneSignal.User.addTag("KEY", "VALUE"); |
Add a tag for the current user. Tags are key:value pairs used as building blocks for targeting specific users and/or personalizing messages. If the tag key already exists, it will be replaced with the value provided here. |
OneSignal.User.addTags({"KEY_01": "VALUE_01", "KEY_02": "VALUE_02"}); |
Add multiple tags for the current user. Tags are key:value pairs used as building blocks for targeting specific users and/or personalizing messages. If the tag key already exists, it will be replaced with the value provided here. |
OneSignal.User.removeTag("KEY"); |
Remove the data tag with the provided key from the current user. |
OneSignal.User.removeTags(["KEY_01", "KEY_02"]); |
Remove multiple tags with the provided keys from the current user. |
OneSignal.User.getTags(); |
Returns the local tags for the current user. |
The OnUserChangeObserver will be fired when the user changes. This method's parameter is the current UserChangedState which includes the current state.
OneSignal.User.addObserver((state) {
var userState = state.jsonRepresentation();
print('OneSignal user changed: $userState');
});
/// Remove a user state observer that has been previously added.
OneSignal.User.removeObserver(observer);The Push Subscription name space is accessible via OneSignal.User.pushSubscription and provides access to push subscription-scoped functionality.
| Flutter | Description |
|---|---|
var id = OneSignal.User.pushSubscription.id |
The readonly push subscription ID. |
var token = OneSignal.User.pushSubscription.token |
The readonly push token. |
var optedIn = OneSignal.User.pushSubscription.optedIn |
Gets a boolean value indicating whether the current user is opted in to push notifications. This returns true when the app has notifications permission and optOut() is not called. Note: Does not take into account the existence of the subscription ID and push token. This boolean may return true but push notifications may still not be received by the user. |
OneSignal.User.pushSubscription.optIn() |
Call this method to receive push notifications on the device or to resume receiving of push notifications after calling optOut. If needed, this method will prompt the user for push notifications permission. |
OneSignal.User.pushSubscription.optOut() |
If at any point you want the user to stop receiving push notifications on the current device (regardless of system-level permission status), you can call this method to opt out. |
OneSignal.User.pushSubscription.addObserver(OnPushSubscriptionChangeObserver observer) See below for usage |
Adds the observer to run when the push subscription changes. |
OneSignal.User.pushSubscription.removeObserver(observer) |
Remove a push subscription observer that has been previously added. |
The OnPushSubscriptionChangeObserver will be fired when the push subscription changes. This method's parameter is the current OSPushSubscriptionChangedState which includes the previous and current state.
OneSignal.User.pushSubscription.addObserver((state) {
OSPushSubscriptionChangedState current = state.current;
OSPushSubscriptionChangedState previous = state.previous;
if (state.current.optedIn) {
/// Respond to new state
}
});
/// Remove a push subscription observer that has been previously added.
OneSignal.User.pushSubscription.removeObserver(observer);The Session namespace is accessible via OneSignal.Session and provides access to session-scoped functionality.
| Flutter | Description |
|---|---|
OneSignal.Session.addOutcome("OUTCOME_NAME"); |
Add an outcome with the provided name, captured against the current session. |
OneSignal.Session.addUniqueOutcome("OUTCOME_NAME"); |
Add a unique outcome with the provided name, captured against the current session. |
OneSignal.Session.addOutcomeWithValue("OUTCOME_NAME", 1); |
Add an outcome with the provided name and value, captured against the current session. |
The Notifications namespace is accessible via OneSignal.Notifications and provides access to notification-scoped functionality.
| Flutter | Description |
|---|---|
var permission = OneSignal.Notifications.permission |
Whether this app has push notification permission. |
var permissionNative = await OneSignal.Notifications.permissionNative() |
(ios only) Returns the enum for the native permission of the device. It will be one of: notDetermined, denied, authorized, provisional (only available in iOS 12), ephemeral (only available in iOS 14) |
var canRequest = await OneSignal.Notifications.canRequest(); |
Whether attempting to request notification permission will show a prompt. Returns true if the device has not been prompted for push notification permission already. |
OneSignal.Notifications.clearAll(); |
Removes all OneSignal notifications. |
OneSignal.Notifications.removeNotification(int x); |
(Android only) Cancels a single OneSignal notification based on its Android notification integer ID. Use instead of Android's [android.app.NotificationManager.cancel], otherwise the notification will be restored when your app is restarted. |
OneSignal.Notifications.removeGroupedNotifications("GROUP_KEY"); |
(Android only) Cancels a group of OneSignal notifications with the provided group key. Grouping notifications is a OneSignal concept, there is no [android.app.NotificationManager] equivalent. |
OneSignal.Notifications.requestPermission(bool fallbackToSettings); See below for usage |
Prompt the user for permission to receive push notifications. This will display the native system prompt to request push notification permission. |
OneSignal.Notifications.registerForProvisionalAuthorization(bool fallbackToSettings) |
(iOS only) Instead of having to prompt the user for permission to send them push notifications, your app can request provisional authorization. |
OneSignal.Notifications.addPermissionObserver(observer); See below for usage |
This method will fire when a notification permission setting changes. This happens when the user enables or disables notifications for your app from the system settings outside of your app. |
OneSignal.Notifications.removePermissionObserver(observer); See below for usage |
Remove a push permission observer that has been previously added. |
OneSignal.Notifications.addForegroundWillDisplayListener(listener); See below for usage |
Adds a listener to run before displaying a notification while the app is in focus. Use this listener to read notification data and change it or decide if the notification should show or not. Note: this runs after the Notification Service Extension which can be used to modify the notification before showing it. |
OneSignal.Notifications.removeForegroundWillDisplayListener(listener); |
Remove a listener that has been previously added. |
OneSignal.Notifications.addClickListener(listener); See below for usage |
Sets a listener that will run whenever a notification is opened by the user. |
OneSignal.Notifications.removeClickListener(listener); |
Remove a listener that has been previously added. |
OneSignal.Notifications.requestPermission(true);Add an observer when permission status changes. You can call removePermissionObserver to remove any existing listeners.
OneSignal.Notifications.addPermissionObserver((state) {
print("Has permission " + state.toString());
});
/// Remove the observer
OneSignal.Notifications.removePermissionObserver(observer);OneSignal.Notifications.addForegroundWillDisplayListener((event) {
/// preventDefault to not display the notification
event.preventDefault();
/// Do async work
/// notification.display() to display after preventing default
event.notification.display();
});
/// Remove the listener
OneSignal.Notifications.removeForegroundWillDisplayListener(listener);OneSignal.Notifications.addClickListener((event) {
print('NOTIFICATION CLICK LISTENER CALLED WITH EVENT: $event');
});
/// Remove the listener
OneSignal.Notifications.removeClickListener(listener);The Location namespace is accessible via OneSignal.Location and provide access to location-scoped functionality.
| Flutter | Description |
|---|---|
OneSignal.Location.isShared(); |
Whether location is currently shared with OneSignal. |
OneSignal.Location.setShared(true); |
Enable or disable location sharing. |
OneSignal.Location.requestPermission(); |
Use this method to manually prompt the user for location permissions. This allows for geotagging so you send notifications to users based on location. |
The In App Messages namespace is accessible via OneSignal.InAppMessages and provide access to in app messages-scoped functionality.
| Flutter | Description |
|---|---|
var paused = await OneSignal.InAppMessages.arePaused() OneSignal.InAppMessages.paused(true); |
Whether in-app messaging is currently paused. When set to true, no IAM will be presented to the user regardless of whether they qualify for them. When set to false, any IAMs the user qualifies for will be presented to the user at the appropriate time. |
OneSignal.InAppMessages.addTrigger("triggerKey", "triggerValue"); |
Add a trigger for the current user. Triggers are currently explicitly used to determine whether a specific IAM should be displayed to the user. See Triggers. If the trigger key already exists, it will be replaced with the value provided here. Note that triggers are not persisted to the backend. They only exist on the local device and are applicable to the current user. |
OneSignal.InAppMessages.addTriggers({"triggerKey1":"triggerValue", "triggerKey2": "triggerValue"}); |
Add multiple triggers for the current user. Triggers are currently explicitly used to determine whether a specific IAM should be displayed to the user. See Triggers. If any trigger key already exists, it will be replaced with the value provided here. Note that triggers are not persisted to the backend. They only exist on the local device and are applicable to the current user. |
OneSignal.InAppMessages.removeTrigger("triggerKey"); |
Remove the trigger with the provided key from the current user. |
OneSignal.InAppMessages.removeTriggers(["triggerKey1", "triggerKey2"]); |
Remove multiple triggers from the current user. |
OneSignal.InAppMessages.clearTriggers(); |
Clear all triggers from the current user. |
OneSignal.InAppMessages.addClickListener(listener); OneSignal.InAppMessages.removeClickListener(listener) See below for usage |
Set the in-app message click handler. |
OneSignal.InAppMessages.addWillDisplayListener(listener);OneSignal.InAppMessages.addDidDisplayListener(listener);OneSignal.InAppMessages.addWillDismissListener(listener);OneSignal.InAppMessages.addDidDismissListener(listener);See below for usage |
Add listeners for in-app message lifecycle events. Use the corresponding removal methods to remove the previously added listener. |
OneSignal.InAppMessages.addClickListener((event) {
print("In App Message Clicked: \n${event.result.jsonRepresentation().replaceAll("\\n", "\n")}");
});
/// Remove the listener
OneSignal.InAppMessages.removeClickListener(listener)OneSignal.InAppMessages.addWillDisplayListener((event) {
print("ON WILL DISPLAY IN APP MESSAGE ${event.message.messageId}");
});
OneSignal.InAppMessages.addDidDisplayListener((event) {
print("ON DID DISPLAY IN APP MESSAGE ${event.message.messageId}");
});
OneSignal.InAppMessages.addWillDismissListener((event) {
print("ON WILL DISMISS IN APP MESSAGE ${event.message.messageId}");
});
OneSignal.InAppMessages.addDidDismissListener((event) {
print("ON DID DISMISS IN APP MESSAGE ${event.message.messageId}");
});
/// Remove the listeners
OneSignal.InAppMessages.removeWillDisplayListener(listener);
OneSignal.InAppMessages.removeDidDisplayListener(listener);
OneSignal.InAppMessages.removeWillDismissListener(listener);
OneSignal.InAppMessages.removeDidDismissListener(listener);The Debug namespace is accessible via OneSignal.Debug and provide access to debug-scoped functionality.
| Flutter | Description |
|---|---|
OneSignal.Debug.setLogLevel(OSLogLevel.verbose); |
Sets the log level the OneSignal SDK should be writing to the log. |
OneSignal.Debug.setAlertLevel(OSLogLevel.none); |
Sets the logging level to show as alert dialogs. |
device-scoped user
An anonymous user with no aliases that cannot be retrieved except through the current device or OneSignal dashboard. On app install, the OneSignal SDK is initialized with a device-scoped user. A device-scoped user can be upgraded to an identified user by calling
OneSignal.login("USER_EXTERNAL_ID")to identify the user by the specified external user ID.
General
- Changing app IDs is not supported.
- In the SDK, the user state is only refreshed from the server when a new session is started (cold start or backgrounded for over 30 seconds) or when the user is logged in. This is by design.
- Any
Usernamespace calls must be invoked after initialization. Example:OneSignal.User.addTag("tag", "2")
- Identity Verification
- We will be introducing JWT in a follow up release