Unable to initialize Admob "MobileAds doesnt exist in the current context"

I am trying to initialize my Admob for release build in one of my unity app but as soon as I try to call

Code (CSharp):

1. MobileAds.Initialize()

.

Code (CSharp):

1.  
2. using UnityEngine;
3. using System.Collections.Generic;
4. using System.Collections;
5. using System;
6. using UnityEngine.SocialPlatforms;
7. using GoogleMobileAds.Api;
8. using GoogleMobileAds;
9. public class AdsControl : MonoBehaviour
10. {
11.    
12.    
13.     protected AdsControl ()
14.     {
15.     }
16.  
17.  
18. [LIST=1]
19. [*]
20. [/LIST]
21.  
22.     private static AdsControl _instance;
23.  
24.     InterstitialAd interstitial;
25.     BannerView bannerView;
26.  
27.     public string AdmobID_Android_Interstitial, AdmobID_IOS_Interstitial, AdmobID_Android_Banner, AdmobID_IOS_Banner,ADID;
28.  
29.     public static AdsControl Instance { get { return _instance; } }
30.  
31.     void Awake ()
32.     {
33.        
34.         if (FindObjectsOfType (typeof(AdsControl)).Length > 1) {
35.             Destroy (gameObject);
36.             return;
37.         }
38.        
39.         _instance = this;
40. // issue is here
41.        MobileAds.Initialize(ADID);
42.         MakeNewInterstial ();
43.         RequestBanner ();
44.         ShowBanner ();
45.        
46.         DontDestroyOnLoad (gameObject); //Already done by CBManager
47.  
48.     }
49.  
50.  
51.     public void HandleInterstialAdClosed (object sender, EventArgs args)
52.     {
53.  
54.         MobileAds.Initialize();
55.         if (interstitial != null)
56.             interstitial.Destroy ();
57.         MakeNewInterstial ();
58.    
59.    
60.        
61.     }
62.  
63.     void MakeNewInterstial ()
64.     {
65.        
66.  
67. #if UNITY_ANDROID
68.         interstitial = new InterstitialAd (AdmobID_Android_Interstitial);
69. #endif
70. #if UNITY_IPHONE
71.         interstitial = new InterstitialAd (AdmobID_IOS_Interstitial);
72. #endif
73.         interstitial.OnAdClosed += HandleInterstialAdClosed;
74.         AdRequest request = new AdRequest.Builder ().Build ();
75.         interstitial.LoadAd (request);
76.  
77.     }
78.  
79.  
80.     public void showAds ()
81.     {
82.  
83.         int gameOver = PlayerPrefs.GetInt ("GameOver");
84.         if (gameOver < 2)
85.             gameOver++;
86.         else {
87.             gameOver = 0;
88.             interstitial.Show ();
89.         }
90.         PlayerPrefs.SetInt ("GameOver", gameOver);
91.    
92.  
93.     }
94.  
95.     public void MoreGame ()
96.     {
97.        
98.         interstitial.Show ();
99.  
100.     }
101.  
102.     private void RequestBanner ()
103.     {
104.        
105.         string adUnitId = "";
106.  
107.         #if UNITY_ANDROID
108.         adUnitId = AdmobID_Android_Banner;
109.         #endif
110.         #if UNITY_IPHONE
111.         adUnitId = AdmobID_IOS_Banner;
112.         #endif
113.         // Create a 320x50 banner at the top of the screen.
114.         bannerView = new BannerView (adUnitId, AdSize.Banner, AdPosition.Bottom);
115.         // Load a banner ad.
116.         AdRequest request = new AdRequest.Builder ().Build ();
117.         bannerView.LoadAd (request);
118.     }
119.  
120.     private void ShowBanner ()
121.     {
122.         bannerView.Show ();
123.     }
124.  
125.        
126. }

 

According to this page, there's an issue with Unity stripping out the assembly code at build time. The two solutions posted in the linked thread are to either:

1. Add the following lines to GoogleMobileAdsClientFactory.cs:
   
   Code (CSharp):

   1. using UnityEngine.Scripting;
   2. [assembly: Preserve]
2. Change the managed stripping level to Low or Disabled under Player Settings > Optimization > Managed Stripping Level

If the above doesn't work, there's a couple of other solutions in the linked thread.