When automatic ad refresh is disabled, a call to this method directs the AdControl to show the next ad when a new one becomes available.
The normal refresh interval is 30 seconds. If the user is on a metered network that can be detected, the refresh interval is 1 minute.
public void Refresh()
If no ad or no new ad is shown:
The network may be unavailable.
An error may have occurred when trying to contact the ad server.
The ad unit may be configured on pubCenter so that it excludes any available inventory of ads. Try eliminating keywords or other ad-targeting restrictions.
Refresh has been called too soon after the previous call. The normal refresh interval is 30 seconds. If the user is on a metered network that can be detected, the refresh interval is 1 minute. No new ad will be shown if the attempt to refresh is made during this time.
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