iOS AdMob激励视频：实现限时可跳过/延迟关闭广告功能

Hey there! Let's work through your request to modify the AdMob rewarded video ad's close button behavior—either delaying its availability or replacing it with a "Skip Ad" button. First, a quick heads-up: AdMob's native ad UI elements are controlled by their SDK, so any customization needs to align with AdMob's policies to avoid account issues. With that in mind, here are your options:

Option 1: Delay the Close Button's Availability #

You can disable the default close button when the ad opens, then re-enable it after a set time (like 5 seconds). This requires traversing the ad's view hierarchy to find the close button—note that AdMob's view structure might change with SDK updates, so you may need to adjust this logic periodically.

// Implement this in your GADRewardBasedVideoAdDelegate method
func rewardBasedVideoAdDidOpen(_ rewardBasedVideoAd: GADRewardBasedVideoAd) {
    guard let adRootView = rewardBasedVideoAd.rootViewController?.view else { return }
    
    // Recursively search for the close button in the ad's view hierarchy
    func findCloseButton(in view: UIView) -> UIButton? {
        for subview in view.subviews {
            if let button = subview as? UIButton {
                // Adjust the check based on your ad's actual close button (title, image, etc.)
                if button.titleLabel?.text?.lowercased() == "close" || button.currentImage != nil {
                    return button
                }
            }
            if let foundButton = findCloseButton(in: subview) {
                return foundButton
            }
        }
        return nil
    }
    
    if let closeButton = findCloseButton(in: adRootView) {
        closeButton.isEnabled = false
        // Re-enable the button after 5 seconds
        Timer.scheduledTimer(withTimeInterval: 5.0, repeats: false) { _ in
            closeButton.isEnabled = true
        }
    }
}

Notes: #

• Test this thoroughly after any AdMob SDK updates, as view structures can shift.
• Don't set an excessively long delay—this can hurt user experience and may violate policies.

Option 2: Replace with a "Skip Ad" Button #

For this approach, we'll hide the default close button and add a custom "Skip Ad" button that becomes active after a delay. Again, ensure this follows AdMob's policies (skip buttons are typically allowed after a short mandatory viewing period).

func rewardBasedVideoAdDidOpen(_ rewardBasedVideoAd: GADRewardBasedVideoAd) {
    guard let adViewController = rewardBasedVideoAd.rootViewController else { return }
    let adView = adViewController.view
    
    // Hide the original close button
    func hideDefaultCloseButton(in view: UIView) {
        for subview in view.subviews {
            if let button = subview as? UIButton {
                if button.titleLabel?.text?.lowercased() == "close" || button.currentImage != nil {
                    button.isHidden = true
                    break
                }
            }
            hideDefaultCloseButton(in: subview)
        }
    }
    hideDefaultCloseButton(in: adView!)
    
    // Create custom Skip Ad button
    let skipButton = UIButton(type: .system)
    skipButton.setTitle("Skip Ad", for: .normal)
    skipButton.titleLabel?.font = UIFont.systemFont(ofSize: 16, weight: .medium)
    skipButton.backgroundColor = UIColor(white: 0.2, alpha: 0.8)
    skipButton.setTitleColor(.white, for: .normal)
    skipButton.layer.cornerRadius = 8
    skipButton.isEnabled = false
    
    // Add button to ad view and set constraints
    adView?.addSubview(skipButton)
    skipButton.translatesAutoresizingMaskIntoConstraints = false
    NSLayoutConstraint.activate([
        skipButton.trailingAnchor.constraint(equalTo: adView!.trailingAnchor, constant: -16),
        skipButton.bottomAnchor.constraint(equalTo: adView!.bottomAnchor, constant: -32),
        skipButton.widthAnchor.constraint(equalToConstant: 100),
        skipButton.heightAnchor.constraint(equalToConstant: 40)
    ])
    
    // Enable button after 5 seconds
    Timer.scheduledTimer(withTimeInterval: 5.0, repeats: false) { _ in
        skipButton.isEnabled = true
    }
    
    // Handle skip button tap
    skipButton.addTarget(self, action: #selector(handleSkipAdTap), for: .touchUpInside)
}

@objc private func handleSkipAdTap() {
    if rewardBasedVideo.isReady {
        rewardBasedVideo.pause()
        rewardBasedVideo.rootViewController?.dismiss(animated: true)
    }
}

Notes: #

• Custom buttons should clearly communicate their purpose—avoid misleading users.
• If you're still using GADRewardBasedVideoAd, consider migrating to the newer GADRewardedAd SDK (the old one is deprecated). Here's a quick snippet for the new SDK:

var rewardedAd: GADRewardedAd?

// Load ad
func loadRewardedAd() {
    GADRewardedAd.load(withAdUnitID: GOOGLE_AD_UNIT_ID, request: GADRequest()) { ad, error in
        if let error = error {
            print("Ad load failed: \(error.localizedDescription)")
            return
        }
        self.rewardedAd = ad
        self.rewardedAd?.fullScreenContentDelegate = self
    }
}

// Present ad
if let ad = rewardedAd {
    ad.present(fromRootViewController: self) {
        let reward = ad.adReward
        print("User earned \(reward.amount) \(reward.type)")
    }
}

You'd use the fullScreenContentDidPresent(_:) delegate method instead of rewardBasedVideoAdDidOpen(_:) to customize the button in the new SDK.

内容的提问来源于stack exchange，提问作者Pramod More