Hi,
My apologies for if I did not fully understand your issue initially. That said, the IMA SDK should already display the 100% width and height of your ad. Resizing it can be done through the AdsManager's
init or
resize method.
However, since you are asking, I would assume that you maybe encountering ads that are not being displayed fully. This being said, if you could provide an ad tag for reference then I could investigate this issue further. You may reply to me via the Reply privately to author option.
Thanks and regards,