onBackgroundEvent

API used to handle events when the application is in a background state.



onBackgroundEvent(observer: (event: Event) => Promise<void>): void;

Applications in a background state will use an event handler registered by this API method to send events. The handler must return a Promise once complete and only a single event handler can be registered for the application.

View the Background events documentation for more information and example usage.

To listen to foreground events, see the onForegroundEvent documentation.


PropertyDescriptionOptional
observer

A Function which returns a Promise, called on a new event when the application is in a background state.


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