The username for vungle ads is optional, you can view it here: https://docs.coronalabs.com/plugin/vungle/show.html#parameter-reference
You can put your reward code on the "adEnd" event type.
Below is the sample code:
--import vungle ads
local ads = require "ads"
--GET YOUR APP ID FROM VUNGLE
--TEST_Android for Android devices
local appID = "TEST_iOS"
--VUngle ADS Listener
local function vungleAdListener( event )
if ( event.type == "adStart" and event.isError ) then
-- Ad has not finished caching and will not play
end
if ( event.type == "adStart" and not event.isError ) then
-- Ad will play
end
if ( event.type == "cachedAdAvailable" ) then
-- Ad has finished caching and is ready to play
end
if ( event.type == "adView" ) then
-- An ad has completed
end
if ( event.type == "adEnd" ) then
-- The ad experience has been closed- this
-- is a good place to resume your app
-- Place your reward code here like extra lives, coins etc
end
end
--initialize vungle ads
--THIS MUST BE CALLED EARLY SO THAT VUNGLE WILL CACHE THE ADS TO PLAY
--USUALLY TAKES 30 SECS OR LESS ACCORDING TO THE DOCS
ads.init("vungle", appID)
--to show the ads somewhere on your game
ads.show( "interstitial", { isAnimated=false, isBackButtonEnabled=true } )
EDIT
TO show the ads on a button you can add a widget. To customize a widget you can view more here: https://docs.coronalabs.com/api/library/widget/newButton.html
--INIT WIDGET
local widget = require("widget")
--BUTTON EVENT LISTENER
local function handleButtonEvent( event )
if ( "ended" == event.phase ) then
--SHOW ADS
ads.show( "interstitial", { isAnimated=false, isBackButtonEnabled=true } )
end
end
--ADD YOUR BUTTON
local button1 = widget.newButton
{
left = display.contentWidth/2,
top = display.contentHeight/2,
id = "adsButton",
label = "CLICK ME FOR ADS",
onEvent = handleButtonEvent
}