From 92b3860230c7ba13dda93c1dced21ca74bc81a0a Mon Sep 17 00:00:00 2001
From: Elliot Hesp <elliot.hesp@gmail.com>
Date: Tue, 4 Jul 2017 15:39:56 +0100
Subject: [PATCH] [admob][ios] Fix an issue whereby interstitials on iOS could
 not be reused with the same adUnit ID

---
 ios/RNFirebase/admob/RNFirebaseAdMob.m | 11 ++++++++---
 lib/modules/admob/Interstitial.js      |  7 ++++++-
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/ios/RNFirebase/admob/RNFirebaseAdMob.m b/ios/RNFirebase/admob/RNFirebaseAdMob.m
index 398f38fd..70dc4a29 100644
--- a/ios/RNFirebase/admob/RNFirebaseAdMob.m
+++ b/ios/RNFirebase/admob/RNFirebaseAdMob.m
@@ -35,7 +35,7 @@ RCT_EXPORT_METHOD(initialize:
 RCT_EXPORT_METHOD(openDebugMenu:
     (NSString *) appId) {
     GADDebugOptionsViewController *debugOptionsViewController = [GADDebugOptionsViewController debugOptionsViewControllerWithAdUnitID:appId];
-    UIWindow* window = [UIApplication sharedApplication].keyWindow;
+    UIWindow *window = [UIApplication sharedApplication].keyWindow;
 
     [[window rootViewController] presentViewController:debugOptionsViewController animated:YES completion:nil];
 }
@@ -68,6 +68,11 @@ RCT_EXPORT_METHOD(rewardedVideoShowAd:
     [rewardedVideo show];
 }
 
+RCT_EXPORT_METHOD(clearInterstitial:
+    (NSString *) adUnit) {
+    if (_interstitials[adUnit]) [_interstitials removeObjectForKey:adUnit];
+}
+
 - (RNFirebaseAdMobInterstitial *)getOrCreateInterstitial:(NSString *)adUnit {
     if (_interstitials[adUnit]) {
         return _interstitials[adUnit];
@@ -187,8 +192,8 @@ RCT_EXPORT_METHOD(rewardedVideoShowAd:
         NSString *matchText = [value substringWithRange:[match range]];
         if (matchText) {
             NSArray *values = [matchText componentsSeparatedByString:@"x"];
-            CGFloat width = (CGFloat)[values[0] intValue];
-            CGFloat height = (CGFloat)[values[1] intValue];
+            CGFloat width = (CGFloat) [values[0] intValue];
+            CGFloat height = (CGFloat) [values[1] intValue];
             return GADAdSizeFromCGSize(CGSizeMake(width, height));
         }
     }
diff --git a/lib/modules/admob/Interstitial.js b/lib/modules/admob/Interstitial.js
index f072b96b..33eb5568 100644
--- a/lib/modules/admob/Interstitial.js
+++ b/lib/modules/admob/Interstitial.js
@@ -1,4 +1,4 @@
-import { NativeModules } from 'react-native';
+import { NativeModules, Platform } from 'react-native';
 import { statics } from './';
 import AdRequest from './AdRequest';
 import { nativeToJSError } from '../../utils';
@@ -8,6 +8,11 @@ const FirebaseAdMob = NativeModules.RNFirebaseAdMob;
 export default class Interstitial {
 
   constructor(admob: Object, adUnit: string) {
+    // Interstitials on iOS require a new instance each time
+    if (Platform.OS === 'ios') {
+      FirebaseAdMob.clearInterstitial(adUnit);
+    }
+
     this.admob = admob;
     this.adUnit = adUnit;
     this.loaded = false;