feat(firebase_app_check): provide androidDebugProvider boolean for android debug provider & update app check example app

packages/firebase_app_check/firebase_app_check/android/src/main/java/io/flutter/plugins/firebase/appcheck/FlutterFirebaseAppCheckPlugin.java

@@ -77,9 +77,16 @@ private Task<Void> activate(Map<String, Object> arguments) {
     cachedThreadPool.execute(
         () -> {
           try {
+            // To test your app in debug mode, you may uncomment the following
+            // if(BuildConfig.DEBUG) {
+            //   FirebaseAppCheck firebaseAppCheck = FirebaseAppCheck.getInstance();
+            //   firebaseAppCheck.installAppCheckProviderFactory(
+            //   DebugAppCheckProviderFactory.getInstance());
+            // } else {
             FirebaseAppCheck firebaseAppCheck = getAppCheck(arguments);
             firebaseAppCheck.installAppCheckProviderFactory(
                 SafetyNetAppCheckProviderFactory.getInstance());
+            // }
             taskCompletionSource.setResult(null);
           } catch (Exception e) {
             taskCompletionSource.setException(e);

packages/firebase_app_check/firebase_app_check/example/android/app/build.gradle

@@ -28,15 +28,16 @@ apply plugin: 'com.google.gms.google-services'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 33
 
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "io.flutter.plugins.firebase.appcheck.example"
-        minSdkVersion 16
-        targetSdkVersion 30
+        minSdkVersion 19
+        targetSdkVersion 33
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
+        multiDexEnabled true
     }
 
     buildTypes {
@@ -51,3 +52,8 @@ android {
 flutter {
     source '../..'
 }
+
+dependencies {
+  implementation 'com.google.firebase:firebase-appcheck-safetynet:16.0.0'
+  implementation 'com.google.firebase:firebase-appcheck-debug:16.0.0'
+}

packages/firebase_app_check/firebase_app_check/example/android/build.gradle

@@ -1,21 +1,21 @@
 buildscript {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.2'
+        classpath 'com.android.tools.build:gradle:4.1.3'
         // START: FlutterFire Configuration
-        classpath 'com.google.gms:google-services:4.3.10'
+        classpath 'com.google.gms:google-services:4.3.13'
         // END: FlutterFire Configuration
     }
 }
 
 allprojects {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 }
 

packages/firebase_app_check/firebase_app_check/example/lib/main.dart

@@ -2,11 +2,14 @@ import 'package:firebase_app_check/firebase_app_check.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:cloud_firestore/cloud_firestore.dart';
 
 import 'firebase_options.dart';
 
 const kWebRecaptchaSiteKey = '6Lemcn0dAAAAABLkf6aiiHvpGD6x-zF3nOSDU2M8';
 
+// For iOS debug instructions, please visit: https://github.com/firebase/flutterfire/issues/8969#issuecomment-1202544521
+// For android debug instructions, please visit: https://github.com/firebase/flutterfire/issues/6551#issuecomment-1225502729
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   await Firebase.initializeApp(options: DefaultFirebaseOptions.currentPlatform);
@@ -79,6 +82,26 @@ class _FirebaseAppCheck extends State<FirebaseAppCheckExample> {
       body: Center(
         child: Column(
           children: [
+            ElevatedButton(
+              onPressed: () async {
+                // Use this button to check whether the request was validated on the Firebase console
+                // Gets first document in collection
+                final result = await FirebaseFirestore.instance
+                    .collection('flutter-tests')
+                    .limit(1)
+                    .get();
+
+                if (result.docs.isNotEmpty) {
+                  setMessage('Document found');
+                  print('${result.docs[0].data()}');
+                } else {
+                  setMessage(
+                    'Document not found, please add a document to the collection',
+                  );
+                }
+              },
+              child: const Text('Test App Check validates requests'),
+            ),
             ElevatedButton(
               onPressed: () async {
                 if (kIsWeb) {

packages/firebase_app_check/firebase_app_check/example/pubspec.yaml

@@ -9,6 +9,8 @@ environment:
   sdk: ">=2.16.0 <3.0.0"
 
 dependencies:
+  cloud_firestore:
+    path: ../../../cloud_firestore/cloud_firestore
   cupertino_icons: ^0.1.2
   firebase_app_check:
     path: ../
@@ -18,6 +20,12 @@ dependencies:
     sdk: flutter
 
 dependency_overrides:
+  cloud_firestore:
+    path: ../../../cloud_firestore/cloud_firestore
+  cloud_firestore_platform_interface:
+    path: ../../../cloud_firestore/cloud_firestore_platform_interface
+  cloud_firestore_web:
+    path: ../../../cloud_firestore/cloud_firestore_web
   firebase_app_check_platform_interface:
     path: ../../../firebase_app_check/firebase_app_check_platform_interface
   firebase_app_check_web:
@@ -28,6 +36,5 @@ dependency_overrides:
     path: ../../../firebase_core/firebase_core_platform_interface
   firebase_core_web:
     path: ../../../firebase_core/firebase_core_web
-
 flutter:
   uses-material-design: true