mobileDisplayCreative.setArchived(false);
// The type ID for mobile creatives is 30. See GetCreativeTypes.java
mobileDisplayCreative.setTypeId(30);
// Set the mobile creative asset.
HTMLCreativeAsset htmlCreativeAsset = new MobileDisplayCreativeAsset();
htmlCreativeAsset.setAssetFilename(mobileAssetFileName);
mobileDisplayCreative.setCreativeAssets(new HTMLCreativeAsset[]{htmlCreativeAsset});
// Save the mobile display creative.
CreativeSaveResult creativeSaveResult = service.saveCreative(mobileDisplayCreative,
campaignId);