checkappupdate

// Creates instance of the manager.
val appUpdateManager = AppUpdateManagerFactory.create(context)

// Returns an intent object that you use to check for an update.
val appUpdateInfoTask = appUpdateManager.appUpdateInfo

// Checks that the platform will allow the specified type of update.
appUpdateInfoTask.addOnSuccessListener { appUpdateInfo ->
    if (appUpdateInfo.updateAvailability() == UpdateAvailability.UPDATE_AVAILABLE
    
      // For a immediate update, use AppUpdateType.IMMEDIATE
      && appUpdateInfo.isUpdateTypeAllowed(AppUpdateType.FLEXIBLE)
    ) {
       // notify user that there is an available update
    }
}