diff --git a/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppDelegate.m b/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppDelegate.m
index ec19052a..4eb37b7c 100644
--- a/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppDelegate.m
+++ b/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppDelegate.m
@@ -24,15 +24,8 @@ - (BOOL)application:(UIApplication *)application
 }
 
 - (void) applicationDidBecomeActive:(UIApplication *)application {
-  NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF.isKeyWindow == YES"];
-  UIWindow *keyWindow = [[application.windows filteredArrayUsingPredicate:predicate] firstObject];
-  UIViewController *rootViewController = keyWindow.rootViewController;
-  // Do not show app open ad if the current view controller is SplashViewController.
-  if (!rootViewController ||
-      [rootViewController isKindOfClass:[SplashViewController class]]) {
-    return;
-  }
-  [AppOpenAdManager.sharedInstance showAdIfAvailable:rootViewController];
+  // Show the app open ad when the app is foregrounded.
+  [AppOpenAdManager.sharedInstance showAdIfAvailable];
 }
 
 @end
diff --git a/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppOpenAdManager.h b/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppOpenAdManager.h
index a98a2a7e..53672259 100644
--- a/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppOpenAdManager.h
+++ b/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppOpenAdManager.h
@@ -29,6 +29,6 @@
 
 + (nonnull AppOpenAdManager *)sharedInstance;
 - (void)loadAd;
-- (void)showAdIfAvailable:(nonnull UIViewController*)viewController;
+- (void)showAdIfAvailable;
 
 @end
diff --git a/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppOpenAdManager.m b/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppOpenAdManager.m
index 30f37b0b..4ba9ae61 100644
--- a/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppOpenAdManager.m
+++ b/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppOpenAdManager.m
@@ -95,7 +95,7 @@ - (void)loadAd {
   }];
 }
 
-- (void)showAdIfAvailable:(nonnull UIViewController *)viewController {
+- (void)showAdIfAvailable {
   // If the app open ad is already showing, do not show the ad again.
   if (_isShowingAd) {
     NSLog(@"App open ad is already showing.");
@@ -114,7 +114,7 @@ - (void)showAdIfAvailable:(nonnull UIViewController *)viewController {
   }
   NSLog(@"App open ad will be displayed.");
   _isShowingAd = YES;
-  [_appOpenAd presentFromRootViewController:viewController];
+  [_appOpenAd presentFromRootViewController:nil];
 }
 
 #pragma mark - GADFullScreenContentDelegate
diff --git a/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/SplashViewController.m b/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/SplashViewController.m
index 9056ee59..172c3401 100644
--- a/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/SplashViewController.m
+++ b/Objective-C/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/SplashViewController.m
@@ -91,7 +91,7 @@ - (void)decrementCounter {
   [_countdownTimer invalidate];
   _countdownTimer = nil;
 
-  [AppOpenAdManager.sharedInstance showAdIfAvailable:self];
+  [AppOpenAdManager.sharedInstance showAdIfAvailable];
 }
 
 - (void)startGoogleMobileAdsSDK {
diff --git a/Objective-C/admob/AppOpenExample/AppOpenExample/AppDelegate.m b/Objective-C/admob/AppOpenExample/AppOpenExample/AppDelegate.m
index ec19052a..4eb37b7c 100644
--- a/Objective-C/admob/AppOpenExample/AppOpenExample/AppDelegate.m
+++ b/Objective-C/admob/AppOpenExample/AppOpenExample/AppDelegate.m
@@ -24,15 +24,8 @@ - (BOOL)application:(UIApplication *)application
 }
 
 - (void) applicationDidBecomeActive:(UIApplication *)application {
-  NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF.isKeyWindow == YES"];
-  UIWindow *keyWindow = [[application.windows filteredArrayUsingPredicate:predicate] firstObject];
-  UIViewController *rootViewController = keyWindow.rootViewController;
-  // Do not show app open ad if the current view controller is SplashViewController.
-  if (!rootViewController ||
-      [rootViewController isKindOfClass:[SplashViewController class]]) {
-    return;
-  }
-  [AppOpenAdManager.sharedInstance showAdIfAvailable:rootViewController];
+  // Show the app open ad when the app is foregrounded.
+  [AppOpenAdManager.sharedInstance showAdIfAvailable];
 }
 
 @end
diff --git a/Objective-C/admob/AppOpenExample/AppOpenExample/AppOpenAdManager.h b/Objective-C/admob/AppOpenExample/AppOpenExample/AppOpenAdManager.h
index a98a2a7e..53672259 100644
--- a/Objective-C/admob/AppOpenExample/AppOpenExample/AppOpenAdManager.h
+++ b/Objective-C/admob/AppOpenExample/AppOpenExample/AppOpenAdManager.h
@@ -29,6 +29,6 @@
 
 + (nonnull AppOpenAdManager *)sharedInstance;
 - (void)loadAd;
-- (void)showAdIfAvailable:(nonnull UIViewController*)viewController;
+- (void)showAdIfAvailable;
 
 @end
diff --git a/Objective-C/admob/AppOpenExample/AppOpenExample/AppOpenAdManager.m b/Objective-C/admob/AppOpenExample/AppOpenExample/AppOpenAdManager.m
index 7d32bd35..ccc73014 100644
--- a/Objective-C/admob/AppOpenExample/AppOpenExample/AppOpenAdManager.m
+++ b/Objective-C/admob/AppOpenExample/AppOpenExample/AppOpenAdManager.m
@@ -95,7 +95,7 @@ - (void)loadAd {
   }];
 }
 
-- (void)showAdIfAvailable:(nonnull UIViewController *)viewController {
+- (void)showAdIfAvailable {
   // If the app open ad is already showing, do not show the ad again.
   if (_isShowingAd) {
     NSLog(@"App open ad is already showing.");
@@ -114,7 +114,7 @@ - (void)showAdIfAvailable:(nonnull UIViewController *)viewController {
   }
   NSLog(@"App open ad will be displayed.");
   _isShowingAd = YES;
-  [_appOpenAd presentFromRootViewController:viewController];
+  [_appOpenAd presentFromRootViewController:nil];
 }
 
 #pragma mark - GADFullScreenContentDelegate
diff --git a/Objective-C/admob/AppOpenExample/AppOpenExample/SplashViewController.m b/Objective-C/admob/AppOpenExample/AppOpenExample/SplashViewController.m
index 9056ee59..172c3401 100644
--- a/Objective-C/admob/AppOpenExample/AppOpenExample/SplashViewController.m
+++ b/Objective-C/admob/AppOpenExample/AppOpenExample/SplashViewController.m
@@ -91,7 +91,7 @@ - (void)decrementCounter {
   [_countdownTimer invalidate];
   _countdownTimer = nil;
 
-  [AppOpenAdManager.sharedInstance showAdIfAvailable:self];
+  [AppOpenAdManager.sharedInstance showAdIfAvailable];
 }
 
 - (void)startGoogleMobileAdsSDK {
diff --git a/Swift/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppDelegate.swift b/Swift/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppDelegate.swift
index 08f36d44..9febea54 100644
--- a/Swift/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppDelegate.swift
+++ b/Swift/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppDelegate.swift
@@ -29,14 +29,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
   }
 
   func applicationDidBecomeActive(_ application: UIApplication) {
-    let rootViewController = application.windows.first(
-      where: { $0.isKeyWindow })?.rootViewController
-    if let rootViewController = rootViewController {
-      // Do not show app open ad if the current view controller is SplashViewController.
-      if rootViewController is SplashViewController {
-        return
-      }
-      AppOpenAdManager.shared.showAdIfAvailable(viewController: rootViewController)
-    }
+    // Show the app open ad when the app is foregrounded.
+    AppOpenAdManager.shared.showAdIfAvailable()
   }
 }
diff --git a/Swift/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppOpenAdManager.swift b/Swift/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppOpenAdManager.swift
index b5ed24ca..8f2efdb3 100644
--- a/Swift/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppOpenAdManager.swift
+++ b/Swift/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/AppOpenAdManager.swift
@@ -81,7 +81,7 @@ class AppOpenAdManager: NSObject {
     isLoadingAd = false
   }
 
-  func showAdIfAvailable(viewController: UIViewController) {
+  func showAdIfAvailable() {
     // If the app open ad is already showing, do not show the ad again.
     if isShowingAd {
       print("App open ad is already showing.")
@@ -103,7 +103,7 @@ class AppOpenAdManager: NSObject {
     if let ad = appOpenAd {
       print("App open ad will be displayed.")
       isShowingAd = true
-      ad.present(fromRootViewController: viewController)
+      ad.present(fromRootViewController: nil)
     }
   }
 }
diff --git a/Swift/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/SplashViewController.swift b/Swift/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/SplashViewController.swift
index 1cb9c4d1..01c435f2 100644
--- a/Swift/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/SplashViewController.swift
+++ b/Swift/admanager/AdManagerAppOpenExample/AdManagerAppOpenExample/SplashViewController.swift
@@ -68,7 +68,7 @@ class SplashViewController: UIViewController, AppOpenAdManagerDelegate {
     splashScreenLabel.text = "Done."
     countdownTimer?.invalidate()
 
-    AppOpenAdManager.shared.showAdIfAvailable(viewController: self)
+    AppOpenAdManager.shared.showAdIfAvailable()
   }
 
   private func startGoogleMobileAdsSDK() {
diff --git a/Swift/admob/AppOpenExample/AppOpenExample/AppDelegate.swift b/Swift/admob/AppOpenExample/AppOpenExample/AppDelegate.swift
index 08f36d44..9febea54 100644
--- a/Swift/admob/AppOpenExample/AppOpenExample/AppDelegate.swift
+++ b/Swift/admob/AppOpenExample/AppOpenExample/AppDelegate.swift
@@ -29,14 +29,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
   }
 
   func applicationDidBecomeActive(_ application: UIApplication) {
-    let rootViewController = application.windows.first(
-      where: { $0.isKeyWindow })?.rootViewController
-    if let rootViewController = rootViewController {
-      // Do not show app open ad if the current view controller is SplashViewController.
-      if rootViewController is SplashViewController {
-        return
-      }
-      AppOpenAdManager.shared.showAdIfAvailable(viewController: rootViewController)
-    }
+    // Show the app open ad when the app is foregrounded.
+    AppOpenAdManager.shared.showAdIfAvailable()
   }
 }
diff --git a/Swift/admob/AppOpenExample/AppOpenExample/AppOpenAdManager.swift b/Swift/admob/AppOpenExample/AppOpenExample/AppOpenAdManager.swift
index d001b0cf..9df041df 100644
--- a/Swift/admob/AppOpenExample/AppOpenExample/AppOpenAdManager.swift
+++ b/Swift/admob/AppOpenExample/AppOpenExample/AppOpenAdManager.swift
@@ -81,7 +81,7 @@ class AppOpenAdManager: NSObject {
     isLoadingAd = false
   }
 
-  func showAdIfAvailable(viewController: UIViewController) {
+  func showAdIfAvailable() {
     // If the app open ad is already showing, do not show the ad again.
     if isShowingAd {
       print("App open ad is already showing.")
@@ -103,7 +103,7 @@ class AppOpenAdManager: NSObject {
     if let ad = appOpenAd {
       print("App open ad will be displayed.")
       isShowingAd = true
-      ad.present(fromRootViewController: viewController)
+      ad.present(fromRootViewController: nil)
     }
   }
 }
diff --git a/Swift/admob/AppOpenExample/AppOpenExample/SplashViewController.swift b/Swift/admob/AppOpenExample/AppOpenExample/SplashViewController.swift
index 1cb9c4d1..01c435f2 100644
--- a/Swift/admob/AppOpenExample/AppOpenExample/SplashViewController.swift
+++ b/Swift/admob/AppOpenExample/AppOpenExample/SplashViewController.swift
@@ -68,7 +68,7 @@ class SplashViewController: UIViewController, AppOpenAdManagerDelegate {
     splashScreenLabel.text = "Done."
     countdownTimer?.invalidate()
 
-    AppOpenAdManager.shared.showAdIfAvailable(viewController: self)
+    AppOpenAdManager.shared.showAdIfAvailable()
   }
 
   private func startGoogleMobileAdsSDK() {