adModAppDelegate.swift

import GoogleMobileAds

class AppDelegate:UIResponder, UIApplicationDelegate { 
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        //這邊要做的只有兩件事，一個是import GoogleMobileAds
        //另一個就是在didFinishLaunchingWithOptions裡面輸入下面這一行
        GADMobileAds.configure(withApplicationID: "這邊就是你自己的 app ID ")          
        return true
    }   
}