Added: Ad loaders

lib/ad_manager.dart

@@ -0,0 +1,34 @@
+import 'dart:io';
+
+String testID = "ca-app-pub-3940256099942544~4354546703";
+String testInterID = "ca-app-pub-3940256099942544/7049598008";
+
+String appID = "ca-app-pub-1880918445827744~7516812574";
+String appInterID = "ca-app-pub-1880918445827744/1357215445";
+String appBannerID = "ca-app-pub-1880918445827744/5753973067";
+
+class AdManager {
+  static String get appId {
+    if (Platform.isAndroid) {
+      return appID;
+    } else {
+      throw new UnsupportedError("Unsupported platform");
+    }
+  }
+
+  static String get interstitialAdUnitId {
+    if (Platform.isAndroid) {
+      return appInterID;
+    } else {
+      throw new UnsupportedError("Unsupported platform");
+    }
+  }
+
+  static String get bannerAdUnitId {
+    if (Platform.isAndroid) {
+      return appBannerID;
+    } else {
+      throw new UnsupportedError("Unsupported platform");
+    }
+  }
+}

lib/main.dart

@@ -8,6 +8,7 @@ import 'package:nasa_apod/screens/media_screen.dart';
 import 'package:nasa_apod/tasks/notifications.dart';
 import 'package:nasa_apod/tasks/tasks.dart';
 import 'package:nasa_apod/theme/theme.dart';
+import 'package:nasa_apod/ad_manager.dart';
 import 'package:provider/provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
@@ -26,6 +27,8 @@ void main() {
   initializeBackgroundTasks();
   initializeNotifications();
 
+  _initAdMob();
+
   runApp(ChangeNotifierProvider(
       create: (context) => ApodModel(), child: MainApp()));
 }
@@ -49,6 +52,10 @@ class MainApp extends StatelessWidget {
   }
 }
 
+Future<void> _initAdMob() {
+  return FirebaseAdMob.instance.initialize(appId: AdManager.appId);
+}
+
 // DEBUG: Generate mock values
 void generateMockData() {
   DateTime _now = DateTime.now();

lib/screens/home_screen.dart

@@ -1,5 +1,6 @@
 import 'dart:io';
 
+import 'package:firebase_admob/firebase_admob.dart';
 import 'package:flutter/material.dart';
 import 'package:nasa_apod/models/api.dart';
 import 'package:nasa_apod/models/apod_model.dart';
@@ -10,6 +11,7 @@ import 'package:nasa_apod/utils/utils.dart';
 import 'package:provider/provider.dart';
 import 'package:wallpaper_manager/wallpaper_manager.dart';
 
+import '../ad_manager.dart';
 import 'detail_screen.dart';
 import 'favorites_screen.dart';
 
@@ -228,10 +230,69 @@ class _AppScaffoldState extends State<AppScaffold> {
 
   Future<Apod> _futureHighlightApod;
 
+  // InterstitialAd
+  InterstitialAd _interstitialAd;
+  bool _isInterstitialAdReady;
+
+  void _initInterstitialAd() {
+    _isInterstitialAdReady = false;
+
+    _interstitialAd = InterstitialAd(
+      adUnitId: AdManager.interstitialAdUnitId,
+      listener: _onInterstitialAdEvent,
+    );
+  }
+
+  void _loadInterstitialAd() {
+    _interstitialAd.load();
+  }
+
+  void _onInterstitialAdEvent(MobileAdEvent event) {
+    switch (event) {
+      case MobileAdEvent.loaded:
+        _isInterstitialAdReady = true;
+        break;
+      case MobileAdEvent.failedToLoad:
+        _isInterstitialAdReady = false;
+        print('Failed to load an interstitial ad');
+        break;
+      case MobileAdEvent.closed:
+        // _loadInterstitialAd();
+        // _isInterstitialAdReady = false;
+        break;
+      default:
+      // do nothing
+    }
+  }
+
+  // BannerAd
+  BannerAd _bannerAd;
+
+  void _initBannerAd() {
+    _bannerAd = BannerAd(
+      adUnitId: AdManager.bannerAdUnitId,
+      size: AdSize.banner,
+    );
+
+    _loadBannerAd();
+  }
+
+  void _loadBannerAd() {
+    _bannerAd
+      ..load()
+      ..show(anchorType: AnchorType.bottom);
+  }
+
   @override
   void initState() {
     super.initState();
 
+    // TODO: Interstitial Ads - can be activated in the future
+    _initInterstitialAd();
+    // _loadInterstitialAd();
+
+    _initBannerAd();
+
     // Init Pages
     try {
       _futureHighlightApod = ApodApi.fetchApodByDate(DateTime.now());
@@ -256,6 +317,8 @@ class _AppScaffoldState extends State<AppScaffold> {
   }
 
   void _onItemTapped(int index) {
+    if (_isInterstitialAdReady) _interstitialAd.show();
+
     setState(() {
       _currentTab = index;
     });
@@ -359,6 +422,14 @@ class _AppScaffoldState extends State<AppScaffold> {
       ),
     );
   }
+
+  @override
+  void dispose() {
+    _interstitialAd.dispose();
+    _bannerAd.dispose();
+
+    super.dispose();
+  }
 }
 
 class DrawerSectionTitle extends StatelessWidget {