Rewarded interstitial is a type of incentivized ad format that allows you offer rewards for ads that appear automatically during natural app transitions. Unlike rewarded ads, users aren't required to opt-in to view a rewarded interstitial.
Prerequisites
- Google Mobile Ads SDK 7.60.0 or higher.
- Complete the Get started guide.
Implementation
The primary steps to integrate rewarded interstitial ads are as follows:
- Load an ad
- [Optional] Validate SSV callbacks
- Register for callbacks
- Display the ad and handle the reward event
Load an ad
Loading an ad is accomplished using the load(adUnitID:request)
method on the GADRewardedInterstitialAd
class.
Swift
import GoogleMobileAds
import UIKit
class ViewController: UIViewController {
private var rewardedInterstitialAd: GADRewardedInterstitialAd?
override func viewDidLoad() {
super.viewDidLoad()
do {
rewardedInterstitialAd = try await GADRewardedInterstitialAd.load(
withAdUnitID: "ca-app-pub-3940256099942544/6978759866", request: GADRequest())
} catch {
print("Failed to load rewarded interstitial ad with error: \(error.localizedDescription)")
}
}
}
SwiftUI
import GoogleMobileAds
class RewardedInterstitialViewModel: NSObject, ObservableObject,
GADFullScreenContentDelegate
{
@Published var coins = 0
private var rewardedInterstitialAd: GADRewardedInterstitialAd?
func loadAd() async {
do {
rewardedInterstitialAd = try await GADRewardedInterstitialAd.load(
withAdUnitID: "ca-app-pub-3940256099942544/6978759866", request: GADRequest())
rewardedInterstitialAd?.fullScreenContentDelegate = self
} catch {
print(
"Failed to load rewarded interstitial ad with error: \(error.localizedDescription)")
}
}
Objective-C
#import "ViewController.h"
@interface ViewController ()
@property(nonatomic, strong) GADRewardedInterstitialAd* rewardedInterstitialAd;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
[GADRewardedInterstitialAd
loadWithAdUnitID:@"<var label='the ad unit ID'>ca-app-pub-3940256099942544/6978759866</var>"
request:[GADRequest request]
completionHandler:^(
GADRewardedInterstitialAd* _Nullable rewardedInterstitialAd,
NSError* _Nullable error) {
if (!error) {
self.rewardedInterstitialAd = rewardedInterstitialAd;
}
}
];
}
[Optional] Validate server-side verification (SSV) callbacks
Apps that require extra data in server-side
verification callbacks should use the
custom data feature of rewarded ads. Any string value set on a rewarded ad
object is passed to the custom_data
query parameter of the SSV callback. If no
custom data value is set, the custom_data
query parameter value won't be
present in the SSV callback.
The following code sample demonstrates how to set custom data on a rewarded interstitial ad object before requesting an ad.
Swift
do {
rewardedInterstitialAd = try await GADRewardedInterstitialAd.load(
withAdUnitID: "ca-app-pub-3940256099942544/6978759866", request: GADRequest())
let options = GADServerSideVerificationOptions()
options.customRewardString = "SAMPLE_CUSTOM_DATA_STRING"
rewardedInterstitialAd.serverSideVerificationOptions = options
} catch {
print("Rewarded ad failed to load with error: \(error.localizedDescription)")
}
Objective-C
[GADRewardedInterstitialAd
loadWithAdUnitID:@"ca-app-pub-3940256099942544/6978759866"
request:GADRequest
completionHandler:^(GADRewardedInterstitialAd *ad, NSError *error) {
if (error) {
// Handle Error
return;
}
self.rewardedInterstitialAd = ad;
GADServerSideVerificationOptions *options =
[[GADServerSideVerificationOptions alloc] init];
options.customRewardString = @"SAMPLE_CUSTOM_DATA_STRING";
ad.serverSideVerificationOptions = options;
}];
Register for callbacks
In order to receive notifications for presentation events, you must implement
the GADFullScreenContentDelegate
protocol and assign it to the
fullScreenContentDelegate
property of the returned ad. The
GADFullScreenContentDelegate
protocol handles callbacks for when the ad
presents successfully or unsuccessfully, and when it is dismissed. The following
code shows how to implement the protocol and assign it to the ad:
Swift
import GoogleMobileAds
import UIKit
class ViewController: UIViewController, GADFullScreenContentDelegate {
private var rewardedInterstitialAd: GADRewardedInterstitialAd?
override func viewDidLoad() {
super.viewDidLoad()
do {
rewardedInterstitialAd = try await GADRewardedInterstitialAd.load(
withAdUnitID: "ca-app-pub-3940256099942544/6978759866", request: GADRequest())
self.rewardedInterstitialAd?.fullScreenContentDelegate = self
} catch {
print("Failed to load rewarded interstitial ad with error: \(error.localizedDescription)")
}
}
/// Tells the delegate that the ad failed to present full screen content.
func ad(_ ad: GADFullScreenPresentingAd, didFailToPresentFullScreenContentWithError error: Error) {
print("Ad did fail to present full screen content.")
}
/// Tells the delegate that the ad will present full screen content.
func adWillPresentFullScreenContent(_ ad: GADFullScreenPresentingAd) {
print("Ad will present full screen content.")
}
/// Tells the delegate that the ad dismissed full screen content.
func adDidDismissFullScreenContent(_ ad: GADFullScreenPresentingAd) {
print("Ad did dismiss full screen content.")
}
}
SwiftUI
Assign the fullScreenContentDelegate
property to the returned ad:
rewardedInterstitialAd?.fullScreenContentDelegate = self
Implement the protocol:
func adDidRecordImpression(_ ad: GADFullScreenPresentingAd) {
print("\(#function) called")
}
func adDidRecordClick(_ ad: GADFullScreenPresentingAd) {
print("\(#function) called")
}
func ad(
_ ad: GADFullScreenPresentingAd,
didFailToPresentFullScreenContentWithError error: Error
) {
print("\(#function) called")
}
func adWillPresentFullScreenContent(_ ad: GADFullScreenPresentingAd) {
print("\(#function) called")
}
func adWillDismissFullScreenContent(_ ad: GADFullScreenPresentingAd) {
print("\(#function) called")
}
func adDidDismissFullScreenContent(_ ad: GADFullScreenPresentingAd) {
print("\(#function) called")
// Clear the rewarded interstitial ad.
rewardedInterstitialAd = nil
}
Objective-C
@interface ViewController () <GADFullScreenContentDelegate>
@property(nonatomic, strong) GADRewardedInterstitialAd *rewardedInterstitialAd;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
[GADRewardedInterstitialAd
loadWithAdUnitID:@"ca-app-pub-3940256099942544/6978759866"
request:[GADRequest request]
completionHandler:^(
GADRewardedInterstitialAd *_Nullable rewardedInterstitialAd,
NSError *_Nullable error) {
if (!error) {
self.rewardedInterstitialAd = rewardedInterstitialAd;
self.rewardedInterstitialAd.fullScreenContentDelegate = self;
}
}];
}
/// Tells the delegate that the ad failed to present full screen content.
- (void)ad:(nonnull id<GADFullScreenPresentingAd>)ad
didFailToPresentFullScreenContentWithError:(nonnull NSError *)error {
NSLog(@"Ad did fail to present full screen content.");
}
/// Tells the delegate that the ad will present full screen content.
- (void)adWillPresentFullScreenContent:(nonnull id<GADFullScreenPresentingAd>)ad {
NSLog(@"Ad will present full screen content.");
}
/// Tells the delegate that the ad dismissed full screen content.
- (void)adDidDismissFullScreenContent:(nonnull id<GADFullScreenPresentingAd>)ad {
NSLog(@"Ad did dismiss full screen content.");
}
Display the ad and handle the reward event
When presenting your ad, you must provide a GADUserDidEarnRewardHandler
object
to handle the reward for the user.
The following code presents the best method for displaying a rewarded interstitial ad.
Swift
func show() {
guard let rewardedInterstitialAd = rewardedInterstitialAd else {
return print("Ad wasn't ready.")
}
// The UIViewController parameter is an optional.
rewardedInterstitialAd.present(fromRootViewController: nil) {
let reward = rewardedInterstitialAd.adReward
print("Reward received with currency \(reward.amount), amount \(reward.amount.doubleValue)")
// TODO: Reward the user.
}
}
SwiftUI
Listen to UI events in the view to display the ad.
var rewardedInterstitialBody: some View {
// ...
}
.onChange(
of: showAd,
perform: { newValue in
if newValue {
viewModel.showAd()
}
}
)
Present the rewarded interstitial ad from the view model:
func showAd() {
guard let rewardedInterstitialAd = rewardedInterstitialAd else {
return print("Ad wasn't ready.")
}
rewardedInterstitialAd.present(fromRootViewController: nil) {
let reward = rewardedInterstitialAd.adReward
print("Reward amount: \(reward.amount)")
self.addCoins(reward.amount.intValue)
}
}
Objective-C
- (void)show {
// The UIViewController parameter is nullable.
[_rewardedInterstitialAd presentFromRootViewController:nil
userDidEarnRewardHandler:^{
GADAdReward *reward =
self.rewardedInterstitialAd.adReward;
// TODO: Reward the user.
}];
}
Examples on GitHub
View the full rewarded interstitial ads examples in your preferred language:
Next steps
Learn more about user privacy.