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Apple watchOS Setup

OneSignal supports push notifications for Apple Watch apps in two ways: synced notifications from paired iOS apps and standalone watchOS app implementations.

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Synced Notifications

When an iOS mobile app is synced to a watchOS app, notifications sent to the iPhone will automatically appear on the paired Apple Watch.

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Standalone watchOS Implementation

For standalone watchOS apps, you can implement push notifications independently. While OneSignal doesn’t provide a dedicated SDK for standalone watchOS apps, you can integrate using the following approach:

1

Register for Remote Notifications

Implement the Apple WatchKit WKExtension with the registerForRemoteNotifications method. This generates the APNs push token specifically for the watch device.

2

Handle Token Registration

Set up the WKExtensionDelegate to capture the APNs push token using the didRegisterForRemoteNotificationsWithDeviceToken method.

3

Register Device with OneSignal

Create the subscription in OneSignal using the Add a device API with these required properties:

Required Parameters:

  • identifier: The APNs push token generated by the watch
  • device_type: Set to 0 for iOS devices
  • external_user_id: Unique identifier for the user who owns this subscription

Optional Parameters:

  • test_type: Required only when testing on development or ad-hoc builds
  • Additional properties as needed for your implementation
4

Send Notifications

Once the device is registered, you can send push notifications directly to the watch through OneSignal’s dashboard or API.

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Android Wear OS Setup

The OneSignal Android Native SDK is fully compatible with Android Wear OS applications, providing seamless integration without additional configuration.

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Custom Notifications

You can enhance the watch experience by building:

  • Custom notification layouts optimized for wearable displays
  • Wearable-specific actions and interactions
  • Watch-only notification behaviors

Follow the official Android Developer Notifications on Wear OS documentation for detailed implementation guidance on creating rich, interactive notifications tailored for wearable devices.

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Implementation Notes

  • Use the same OneSignal Android SDK as mobile apps
  • No additional setup required for basic functionality
  • Custom layouts and actions require standard Android Wear OS development practices