如何使用Swift语言显示AdMob应用打开广告？
之前，我在 iOS 应用中使用了 AdMob 的横幅广告。现在，我想展示其最新发布的开放应用广告。我查看了 AdMob 的相关网页（在此处输入链接描述），但此页面上的示例都是 OC 语言的。我不熟悉OC语言。谁能提供 Swift 语言的指导？提前致谢。
回答
OC 代码在这里：https : //developers.google.com/admob/ios/app-open-ads
下面的所有代码都转到 AppDelegate.swift
进口GoogleMobileAds：
import GoogleMobileAds
在类定义中添加GADFullScreenContentDelegate：
class AppDelegate: UIResponder, UIApplicationDelegate, GADFullScreenContentDelegate {
添加两个变量：
var appOpenAd: GADAppOpenAd?
var loadTime = Date()
添加这三个函数：
func requestAppOpenAd() {
let request = GADRequest()
GADAppOpenAd.load(withAdUnitID: "YOUR_ADUNIT_ID",
request: request,
orientation: UIInterfaceOrientation.portrait,
completionHandler: { (appOpenAdIn, _) in
self.appOpenAd = appOpenAdIn
self.appOpenAd?.fullScreenContentDelegate = self
self.loadTime = Date()
print("Ad is ready")
})
}
func tryToPresentAd() {
if let gOpenAd = self.appOpenAd, let rwc = self.window?.rootViewController, wasLoadTimeLessThanNHoursAgo(thresholdN: 4) {
gOpenAd.present(fromRootViewController: rwc)
} else {
self.requestAppOpenAd()
}
}
func wasLoadTimeLessThanNHoursAgo(thresholdN: Int) -> Bool {
let now = Date()
let timeIntervalBetweenNowAndLoadTime = now.timeIntervalSince(self.loadTime)
let secondsPerHour = 3600.0
let intervalInHours = timeIntervalBetweenNowAndLoadTime / secondsPerHour
return intervalInHours < Double(thresholdN)
}
最后调用tryToPresentAd()来自applicationDidBecomeActive()：
func applicationDidBecomeActive(_ application: UIApplication) {
self.tryToPresentAd()
}
就是这样。
编辑：添加需要导入 GoogleMobileAds