Is it possible to stop or cancel a task started via WorkManager?

Yes, WorkManager provides the ability to cancel a task. You can use methods to cancel by task identifier (WorkRequest ID) or by tag.

Example of canceling a task by ID:

val workManager = WorkManager.getInstance(context)
workManager.cancelWorkById(workRequest.id)

Or cancel all tasks with a specific tag:

workManager.cancelAllWorkByTag("myTag")

After cancellation, the task will not be executed if it has not started yet. If the task is already running, WorkManager will attempt to stop it, but this depends on the implementation of the worker itself (for example, if in doWork() you check isStopped()).

Important: to respond correctly to cancellation, you should periodically check the isStopped() method inside doWork() and terminate the work if necessary.