Ad code

    local this = {}

    local platformName = system.getInfo("platformName")
    local x, y = display.contentWidth * 0.5 - 160, platformName == "Android" and display.screenTop or 0

    local function onAd(event)
        if event.isError then end
    end

    function this.hide()
        ads.hide()
    end

    function this.show()
        --if platformName == "Android" then ads.show("banner", "Bubblex", {x = x, y = y, w = 320, h = 50, timeout = 5}) -- use auto refresh for AdMob
        --else

        ads.show("banner", {x = x, y = y}) -- end
    end

    function this.initialize(group)
        local ad = display.newRect(group, _w * .5 , 0 + 25, 320, 50)
        ad:setFillColor(0.5)
        local slatebit = display.newText({parent = group, text = "Slatebit Studios", x = display.contentCenterX + 3, y = display.screenTop + 29, font = "Bitmap", fontSize = 36})
        slatebit:addEventListener("tap", function() system.openURL("http://www.slatebit.com/") end)

       -- if platformName == "Android" then ads.init("crossinstall", "####", onAd) -- use AdMob
       -- else

        ads.init("iads", "com.lavalevel.pixelcamera", onAd) -- end
        this.show()
        timer.performWithDelay(30000, this.show, 0) -- make only for iAd
    end

    return this