4 years ago · 921ea4db20
--- a/fcm/.gitignore
+++ b/fcm/.gitignore
 *.iml
 .gradle
 /local.properties
 /.idea/caches
 /.idea/libraries
 /.idea/modules.xml
 /.idea/workspace.xml
 /.idea/navEditor.xml
 /.idea/assetWizardSettings.xml
 .DS_Store
 /build
 /captures
 .externalNativeBuild
 .cxx
 local.properties
--- a/fcm/.idea/codeStyles/Project.xml
+++ b/fcm/.idea/codeStyles/Project.xml
 <component name="ProjectCodeStyleConfiguration">
  <code_scheme name="Project" version="173">
    <codeStyleSettings language="XML">
      <indentOptions>
        <option name="CONTINUATION_INDENT_SIZE" value="4" />
      </indentOptions>
      <arrangement>
        <rules>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>xmlns:android</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>xmlns:.*</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
              <order>BY_NAME</order>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>.*:id</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
                </AND>
              </match>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>.*:name</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
                </AND>
              </match>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>name</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>style</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>.*</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
              <order>BY_NAME</order>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>.*</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
                </AND>
              </match>
              <order>ANDROID_ATTRIBUTE_ORDER</order>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>.*</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>.*</XML_NAMESPACE>
                </AND>
              </match>
              <order>BY_NAME</order>
            </rule>
          </section>
        </rules>
      </arrangement>
    </codeStyleSettings>
  </code_scheme>
 </component>
--- a/fcm/.idea/compiler.xml
+++ b/fcm/.idea/compiler.xml
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="CompilerConfiguration">
    <bytecodeTargetLevel>
      <module name="fcm.app" target="1.8" />
    </bytecodeTargetLevel>
  </component>
 </project>
--- a/fcm/.idea/gradle.xml
+++ b/fcm/.idea/gradle.xml
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="GradleMigrationSettings" migrationVersion="1" />
  <component name="GradleSettings">
    <option name="linkedExternalProjectsSettings">
      <GradleProjectSettings>
        <option name="testRunner" value="PLATFORM" />
        <option name="distributionType" value="DEFAULT_WRAPPED" />
        <option name="externalProjectPath" value="$PROJECT_DIR$" />
        <option name="gradleJvm" value="JDK" />
        <option name="modules">
          <set>
            <option value="$PROJECT_DIR$" />
            <option value="$PROJECT_DIR$/app" />
          </set>
        </option>
        <option name="resolveModulePerSourceSet" value="false" />
        <option name="useQualifiedModuleNames" value="true" />
      </GradleProjectSettings>
    </option>
  </component>
 </project>
--- a/fcm/.idea/jarRepositories.xml
+++ b/fcm/.idea/jarRepositories.xml
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="RemoteRepositoriesConfiguration">
    <remote-repository>
      <option name="id" value="central" />
      <option name="name" value="Maven Central repository" />
      <option name="url" value="https://repo1.maven.org/maven2" />
    </remote-repository>
    <remote-repository>
      <option name="id" value="jboss.community" />
      <option name="name" value="JBoss Community repository" />
      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
    </remote-repository>
    <remote-repository>
      <option name="id" value="BintrayJCenter" />
      <option name="name" value="BintrayJCenter" />
      <option name="url" value="https://jcenter.bintray.com/" />
    </remote-repository>
    <remote-repository>
      <option name="id" value="Google" />
      <option name="name" value="Google" />
      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
    </remote-repository>
  </component>
 </project>
--- a/fcm/.idea/misc.xml
+++ b/fcm/.idea/misc.xml
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="JDK" project-jdk-type="JavaSDK">
    <output url="file://$PROJECT_DIR$/build/classes" />
  </component>
  <component name="ProjectType">
    <option name="id" value="Android" />
  </component>
 </project>
--- a/fcm/.idea/modules/app/google-services.json
+++ b/fcm/.idea/modules/app/google-services.json
 {
  "project_info": {
    "project_number": "977351283460",
    "firebase_url": "https://fcmfirebaseproject-ececa.firebaseio.com",
    "project_id": "fcmfirebaseproject-ececa",
    "storage_bucket": "fcmfirebaseproject-ececa.appspot.com"
  },
  "client": [
    {
      "client_info": {
        "mobilesdk_app_id": "1:977351283460:android:d8f7f379514a50463bf651",
        "android_client_info": {
          "package_name": "com.example.fcm"
        }
      },
      "oauth_client": [
        {
          "client_id": "977351283460-2sd6lffgb0k9gqp6nl2hc7j89rctiqqq.apps.googleusercontent.com",
          "client_type": 1,
          "android_info": {
            "package_name": "com.example.fcm",
            "certificate_hash": "d633de2a71e90c6d587da6f5396a401f3e2eaded"
          }
        },
        {
          "client_id": "977351283460-31tkkuo092p3sl254kcsqinm7m6fvjei.apps.googleusercontent.com",
          "client_type": 3
        }
      ],
      "api_key": [
        {
          "current_key": "AIzaSyB8-Lpyz6D1TNMZlMU9HrbvNWOvaAHY2gc"
        }
      ],
      "services": {
        "appinvite_service": {
          "other_platform_oauth_client": [
            {
              "client_id": "977351283460-31tkkuo092p3sl254kcsqinm7m6fvjei.apps.googleusercontent.com",
              "client_type": 3
            }
          ]
        }
      }
    }
  ],
  "configuration_version": "1"
 }
--- a/fcm/.idea/runConfigurations.xml
+++ b/fcm/.idea/runConfigurations.xml
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="RunConfigurationProducerService">
    <option name="ignoredProducers">
      <set>
        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
      </set>
    </option>
  </component>
 </project>
--- a/fcm/app/.gitignore
+++ b/fcm/app/.gitignore
 /build
--- a/fcm/app/build.gradle
+++ b/fcm/app/build.gradle
 plugins {
    id 'com.android.application'
    id 'com.google.gms.google-services'
 }
 android {
    compileSdkVersion 29
    buildToolsVersion "29.0.3"
    defaultConfig {
        applicationId "com.example.fcm"
        minSdkVersion 16
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    viewBinding {
        enabled = true
    }
 }
 dependencies {
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'com.google.android.material:material:1.1.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'com.google.firebase:firebase-messaging:20.2.0'
    implementation 'android.arch.work:work-runtime:2.0.1-rc01'
    implementation 'com.google.firebase:firebase-database:19.3.0'
    implementation 'com.firebase:firebase-client-android:2.5.0'
    implementation 'com.android.volley:volley:1.1.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
 }
 apply plugin: 'com.google.gms.google-services'
--- a/fcm/app/google-services.json
+++ b/fcm/app/google-services.json
 {
  "project_info": {
    "project_number": "977351283460",
    "firebase_url": "https://fcmfirebaseproject-ececa.firebaseio.com",
    "project_id": "fcmfirebaseproject-ececa",
    "storage_bucket": "fcmfirebaseproject-ececa.appspot.com"
  },
  "client": [
    {
      "client_info": {
        "mobilesdk_app_id": "1:977351283460:android:d8f7f379514a50463bf651",
        "android_client_info": {
          "package_name": "com.example.fcm"
        }
      },
      "oauth_client": [
        {
          "client_id": "977351283460-2sd6lffgb0k9gqp6nl2hc7j89rctiqqq.apps.googleusercontent.com",
          "client_type": 1,
          "android_info": {
            "package_name": "com.example.fcm",
            "certificate_hash": "d633de2a71e90c6d587da6f5396a401f3e2eaded"
          }
        },
        {
          "client_id": "977351283460-31tkkuo092p3sl254kcsqinm7m6fvjei.apps.googleusercontent.com",
          "client_type": 3
        }
      ],
      "api_key": [
        {
          "current_key": "AIzaSyB8-Lpyz6D1TNMZlMU9HrbvNWOvaAHY2gc"
        }
      ],
      "services": {
        "appinvite_service": {
          "other_platform_oauth_client": [
            {
              "client_id": "977351283460-31tkkuo092p3sl254kcsqinm7m6fvjei.apps.googleusercontent.com",
              "client_type": 3
            }
          ]
        }
      }
    }
  ],
  "configuration_version": "1"
 }
--- a/fcm/app/proguard-rules.pro
+++ b/fcm/app/proguard-rules.pro
 # Add project specific ProGuard rules here.
 # You can control the set of applied configuration files using the
 # proguardFiles setting in build.gradle.
 #
 # For more details, see
 #   http://developer.android.com/guide/developing/tools/proguard.html
 # If your project uses WebView with JS, uncomment the following
 # and specify the fully qualified class name to the JavaScript interface
 # class:
 #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
 #   public *;
 #}
 # Uncomment this to preserve the line number information for
 # debugging stack traces.
 #-keepattributes SourceFile,LineNumberTable
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
--- a/fcm/app/src/androidTest/java/com/example/fcm/ExampleInstrumentedTest.java
+++ b/fcm/app/src/androidTest/java/com/example/fcm/ExampleInstrumentedTest.java
 package com.example.fcm;
 import android.content.Context;
 import androidx.test.platform.app.InstrumentationRegistry;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import static org.junit.Assert.*;
 /**
 * Instrumented test, which will execute on an Android device.
 *
 * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
 */
@RunWith(AndroidJUnit4.class)
 public class ExampleInstrumentedTest {
    @Test
    public void useAppContext() {
        // Context of the app under test.
        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
        assertEquals("com.example.fcm", appContext.getPackageName());
    }
 }
--- a/fcm/app/src/main.zip
+++ b/fcm/app/src/main.zip
--- a/fcm/app/src/main/AndroidManifest.xml
+++ b/fcm/app/src/main/AndroidManifest.xml
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.fcm">
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.App">
        <service android:name=".MyFirebaseMessagingService"
            android:exported="false">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
 </manifest>
--- a/fcm/app/src/main/java/com/example/fcm/MainActivity.java
+++ b/fcm/app/src/main/java/com/example/fcm/MainActivity.java
 package com.example.fcm;
 import androidx.appcompat.app.AppCompatActivity;
 import android.annotation.SuppressLint;
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.os.Build;
 import android.os.Bundle;
 import android.util.Log;
 import android.widget.Button;
 import android.widget.Toast;
 import com.android.volley.toolbox.JsonObjectRequest;
 import com.example.fcm.databinding.ActivityMainBinding;
 import com.google.firebase.iid.FirebaseInstanceId;
 import com.google.firebase.messaging.FirebaseMessaging;
 import org.json.JSONException;
 import org.json.JSONObject;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Objects;
 public class MainActivity extends AppCompatActivity {
    final private String FCM_API = "https://fcm.googleapis.com/fcm/send";
    final private String serverKey = "key=" + "AAAA446tEwQ:APA91bEAqpEFQ0ufbp9WSFIGV68P8kUgNlnKzuEHIcWLeS1YlMwJewRdnAGRae0VpDzriag7ZQbMUMPDiT-LD1kTXLQFM73C9DC13iN4nn9gEYCPVp4MN8JHFm20m1BxS8zWZcKDYFcz";
    final private String contentType = "application/json";
    private static final String TAG = "MainActivity";
    String NOTIFICATION_TITLE;
    String NOTIFICATION_MESSAGE;
    String TOPIC;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ActivityMainBinding binding = ActivityMainBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());
        Button buttonSend = findViewById(R.id.sendButton);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            // Create channel to show notifications.
            String channelId  = getString(R.string.default_notification_channel_id);
            String channelName = getString(R.string.default_notification_channel_name);
            NotificationManager notificationManager =
                    getSystemService(NotificationManager.class);
            notificationManager.createNotificationChannel(new NotificationChannel(channelId,
                    channelName, NotificationManager.IMPORTANCE_LOW));
        }
        // If a notification message is tapped, any data accompanying the notification
        // message is available in the intent extras. In this sample the launcher
        // intent is fired when the notification is tapped, so any accompanying data would
        // be handled here. If you want a different intent fired, set the click_action
        // field of the notification message to the desired intent. The launcher intent
        // is used when no click_action is specified.
        //
        // Handle possible data accompanying notification message.
        // [START handle_data_extras]
        if (getIntent().getExtras() != null) {
            for (String key : getIntent().getExtras().keySet()) {
                Object value = getIntent().getExtras().get(key);
                Log.d(TAG, "Key: " + key + " Value: " + value);
            }
        }
        // [END handle_data_extras]
        binding.subscribeButton.setOnClickListener(v -> {
            Log.d(TAG, "Subscribing to topic");
            // [START subscribe_topics]
            FirebaseMessaging.getInstance().subscribeToTopic("testForMDT")
                    .addOnCompleteListener(task -> {
                        String msg = getString(R.string.msg_subscribed);
                        if (!task.isSuccessful()) {
                            msg = getString(R.string.msg_subscribe_failed);
                        }
                        Log.d(TAG, msg);
                        Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show();
                    });
            // [END subscribe_topics]
        });
        binding.logTokenButton.setOnClickListener(v -> {
            // Get token
            // [START retrieve_current_token]
            FirebaseInstanceId.getInstance().getInstanceId()
                    .addOnCompleteListener(task -> {
                        if (!task.isSuccessful()) {
                            Log.w(TAG, "getInstanceId failed", task.getException());
                            return;
                        }
                        // Get new Instance ID token
                        String token = Objects.requireNonNull(task.getResult()).getToken();
                        // Log and toast
                        @SuppressLint({"StringFormatInvalid", "LocalSuppress"}) String msg = getString(R.string.msg_token_fmt, token);
                        Log.d(TAG, msg);
                        Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show();
                    });
            // [END retrieve_current_token]
        });
        buttonSend.setOnClickListener(v -> {
        TOPIC = "/topics/testForMDT"; //topic must match with what the receiver subscribed to
        NOTIFICATION_TITLE = "Test";
        NOTIFICATION_MESSAGE = "Hello World";
        JSONObject notification = new JSONObject();
        JSONObject notifcationBody = new JSONObject();
        try {
            notifcationBody.put("title", NOTIFICATION_TITLE);
            notifcationBody.put("message", NOTIFICATION_MESSAGE);
            notification.put("to", TOPIC);
            notification.put("data", notifcationBody);
        } catch (JSONException e) {
            Log.e(TAG, "onCreate: " + e.getMessage() );
        }
        sendNotification(notification);
        });
    }
    private void sendNotification(JSONObject notification) {
        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(FCM_API, notification,
                response -> {
                    Log.i(TAG, "onResponse: " + response.toString());
                    //edtTitle.setText("");
                    //edtMessage.setText("");
                },
                error -> {
                    Toast.makeText(MainActivity.this, "Request error", Toast.LENGTH_LONG).show();
                    Log.i(TAG, "onErrorResponse: Didn't work");
                }){
            @Override
            public Map<String, String> getHeaders() {
                Map<String, String> params = new HashMap<>();
                params.put("Authorization", serverKey);
                params.put("Content-Type", contentType);
                return params;
            }
        };
        MySingleton.getInstance(getApplicationContext()).addToRequestQueue(jsonObjectRequest);
    }
 }
--- a/fcm/app/src/main/java/com/example/fcm/MyFirebaseMessagingService.java
+++ b/fcm/app/src/main/java/com/example/fcm/MyFirebaseMessagingService.java
 package com.example.fcm;
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
 import android.graphics.Color;
 import android.media.RingtoneManager;
 import android.net.Uri;
 import android.os.Build;
 import android.util.Log;
 import androidx.annotation.RequiresApi;
 import androidx.core.app.NotificationCompat;
 import androidx.work.OneTimeWorkRequest;
 import androidx.work.WorkManager;
 import com.google.firebase.messaging.FirebaseMessagingService;
 import com.google.firebase.messaging.RemoteMessage;
 import java.util.Random;
 public class MyFirebaseMessagingService extends FirebaseMessagingService {
    private final String ADMIN_CHANNEL_ID ="admin_channel";
    private static final String TAG = "MyFirebaseMsgService";
    private static final String FIREBASE_URL = "https://fcmfirebaseproject-ececa.firebaseio.com";
    /**
     * Called when message is received.
     *
     * @param remoteMessage Object representing the message received from Firebase Cloud Messaging.
     */
    // [START receive_message]
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        // [START_EXCLUDE]
        // There are two types of messages data messages and notification messages. Data messages
        // are handled
        // here in onMessageReceived whether the app is in the foreground or background. Data
        // messages are the type
        // traditionally used with GCM. Notification messages are only received here in
        // onMessageReceived when the app
        // is in the foreground. When the app is in the background an automatically generated
        // notification is displayed.
        // When the user taps on the notification they are returned to the app. Messages
        // containing both notification
        // and data payloads are treated as notification messages. The Firebase console always
        // sends notification
        // messages. For more see: https://firebase.google.com/docs/cloud-messaging/concept-options
        // [END_EXCLUDE]
        // TODO(developer): Handle FCM messages here.
        // Not getting messages here? See why this may be: https://goo.gl/39bRNJ
        final Intent intent = new Intent(this, MainActivity.class);
        NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
        int notificationID = new Random().nextInt(3000);
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
            setupChannels(notificationManager);
        }
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this , 0, intent,
                PendingIntent.FLAG_ONE_SHOT);
        Uri notificationSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, ADMIN_CHANNEL_ID)
                .setSmallIcon(R.drawable.ic_stat_ic_notification)
                .setContentTitle(remoteMessage.getData().get("title"))
                .setContentText(remoteMessage.getData().get("message"))
                .setAutoCancel(true)
                .setSound(notificationSoundUri)
                .setContentIntent(pendingIntent);
        notificationManager.notify(notificationID, notificationBuilder.build());
        Log.d(TAG, "From: " + remoteMessage.getFrom());
        // Check if message contains a data payload.
        if (remoteMessage.getData().size() > 0) {
            Log.d(TAG, "Message data payload: " + remoteMessage.getData());
            if (/* Check if data needs to be processed by long running job */ true) {
                // For long-running tasks (10 seconds or more) use WorkManager.
                scheduleJob();
            } else {
                // Handle message within 10 seconds
                handleNow();
            }
        }
        // Check if message contains a notification payload.
        if (remoteMessage.getNotification() != null) {
            Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
        }
        // Also if you intend on generating your own notifications as a result of a received FCM
        // message, here is where that should be initiated. See sendNotification method below.
    }
    // [END receive_message]
    // [START on_new_token]
    /**
     * Called if InstanceID token is updated. This may occur if the security of
     * the previous token had been compromised. Note that this is called when the InstanceID token
     * is initially generated so this is where you would retrieve the token.
     */
    @Override
    public void onNewToken(String token) {
        Log.d(TAG, "Refreshed token: " + token);
        // If you want to send messages to this application instance or
        // manage this apps subscriptions on the server side, send the
        // Instance ID token to your app server.
        sendRegistrationToServer(token);
    }
    // [END on_new_token]
    /**
     * Schedule async work using WorkManager.
     */
    private void scheduleJob() {
        // [START dispatch_job]
        OneTimeWorkRequest work = new OneTimeWorkRequest.Builder(MyWorker.class)
                .build();
        WorkManager.getInstance().beginWith(work).enqueue();
        // [END dispatch_job]
    }
    /**
     * Handle time allotted to BroadcastReceivers.
     */
    private void handleNow() {
        Log.d(TAG, "Short lived task is done.");
    }
    /**
     * Persist token to third-party servers.
     *
     * Modify this method to associate the user's FCM InstanceID token with any server-side account
     * maintained by your application.
     *
     * @param token The new token.
     */
    private void sendRegistrationToServer(String token) {
        // TODO: Implement this method to send token to your app server.
    }
    /**
     * Create and show a simple notification containing the received FCM message.
     *
     * @param messageBody FCM message body received.
     */
    private void sendNotification(String messageBody) {
        Intent intent = new Intent(this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
                PendingIntent.FLAG_ONE_SHOT);
        String channelId = getString(R.string.default_notification_channel_id);
        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder =
                new NotificationCompat.Builder(this, channelId)
                        .setSmallIcon(R.drawable.ic_stat_ic_notification)
                        .setContentTitle(getString(R.string.fcm_message))
                        .setContentText(messageBody)
                        .setAutoCancel(true)
                        .setSound(defaultSoundUri)
                        .setContentIntent(pendingIntent);
        NotificationManager notificationManager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        // Since android Oreo notification channel is needed.
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(channelId,
                    "Channel human readable title",
                    NotificationManager.IMPORTANCE_DEFAULT);
            notificationManager.createNotificationChannel(channel);
        }
        notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
    }
    //public static void sendNotificationToUser(String user, final String message) {
    //   Firebase ref = new Firebase(FIREBASE_URL);
    //    final Firebase notifications = ref.child("notificationRequests");
    //Map notification = new HashMap<>();
    //    notification.put("username", user);
    //    notification.put("message", message);
    //   notifications.push().setValue(notification);
    //}
    @RequiresApi(api = Build.VERSION_CODES.O)
    private void setupChannels(NotificationManager notificationManager){
        CharSequence adminChannelName = "New notification";
        String adminChannelDescription = "Device to devie notification";
        NotificationChannel adminChannel;
        adminChannel = new NotificationChannel(ADMIN_CHANNEL_ID, adminChannelName, NotificationManager.IMPORTANCE_HIGH);
        adminChannel.setDescription(adminChannelDescription);
        adminChannel.enableLights(true);
        adminChannel.setLightColor(Color.RED);
        adminChannel.enableVibration(true);
        if (notificationManager != null) {
            notificationManager.createNotificationChannel(adminChannel);
        }
    }
 }
--- a/fcm/app/src/main/java/com/example/fcm/MySingleton.java
+++ b/fcm/app/src/main/java/com/example/fcm/MySingleton.java
 package com.example.fcm;
 import android.annotation.SuppressLint;
 import android.content.Context;
 import com.android.volley.Request;
 import com.android.volley.RequestQueue;
 import com.android.volley.toolbox.Volley;
 public class MySingleton {
    @SuppressLint("StaticFieldLeak")
    private static MySingleton instance;
    private RequestQueue requestQueue;
    private Context ctx;
    private MySingleton(Context context) {
        ctx = context;
        requestQueue = getRequestQueue();
    }
    public static synchronized MySingleton getInstance(Context context) {
        if (instance == null) {
            instance = new MySingleton(context);
        }
        return instance;
    }
    public RequestQueue getRequestQueue() {
        if (requestQueue == null) {
            // getApplicationContext() is key, it keeps you from leaking the
            // Activity or BroadcastReceiver if someone passes one in.
            requestQueue = Volley.newRequestQueue(ctx.getApplicationContext());
        }
        return requestQueue;
    }
    public <T> void addToRequestQueue(Request<T> req) {
        getRequestQueue().add(req);
    }
 }
--- a/fcm/app/src/main/java/com/example/fcm/MyWorker.java
+++ b/fcm/app/src/main/java/com/example/fcm/MyWorker.java
 package com.example.fcm;
 import android.content.Context;
 import androidx.annotation.NonNull;
 import android.util.Log;
 import androidx.work.Worker;
 import androidx.work.WorkerParameters;
 public class MyWorker extends Worker {
    private static final String TAG = "MyWorker";
    public MyWorker(@NonNull Context appContext, @NonNull WorkerParameters workerParams) {
        super(appContext, workerParams);
    }
    @NonNull
    @Override
    public Result doWork() {
        Log.d(TAG, "Performing long running task in scheduled job");
        // TODO(developer): add long running task here.
        return Result.success();
    }
 }
--- a/fcm/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
+++ b/fcm/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:aapt="http://schemas.android.com/aapt"
    android:width="108dp"
    android:height="108dp"
    android:viewportWidth="108"
    android:viewportHeight="108">
    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
        <aapt:attr name="android:fillColor">
            <gradient
                android:endX="85.84757"
                android:endY="92.4963"
                android:startX="42.9492"
                android:startY="49.59793"
                android:type="linear">
                <item
                    android:color="#44000000"
                    android:offset="0.0" />
                <item
                    android:color="#00000000"
                    android:offset="1.0" />
            </gradient>
        </aapt:attr>
    </path>
    <path
        android:fillColor="#FFFFFF"
        android:fillType="nonZero"
        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
        android:strokeWidth="1"
        android:strokeColor="#00000000" />
 </vector>
--- a/fcm/app/src/main/res/drawable/ic_launcher_background.xml
+++ b/fcm/app/src/main/res/drawable/ic_launcher_background.xml
 <?xml version="1.0" encoding="utf-8"?>
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="108dp"
    android:height="108dp"
    android:viewportWidth="108"
    android:viewportHeight="108">
    <path
        android:fillColor="#3DDC84"
        android:pathData="M0,0h108v108h-108z" />
    <path
        android:fillColor="#00000000"
        android:pathData="M9,0L9,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,0L19,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M29,0L29,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M39,0L39,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M49,0L49,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M59,0L59,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M69,0L69,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M79,0L79,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M89,0L89,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M99,0L99,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,9L108,9"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,19L108,19"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,29L108,29"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,39L108,39"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,49L108,49"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,59L108,59"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,69L108,69"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,79L108,79"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,89L108,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,99L108,99"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,29L89,29"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,39L89,39"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,49L89,49"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,59L89,59"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,69L89,69"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,79L89,79"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M29,19L29,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M39,19L39,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M49,19L49,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M59,19L59,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M69,19L69,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M79,19L79,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
 </vector>
--- a/fcm/app/src/main/res/drawable/ic_stat_ic_notification.png
+++ b/fcm/app/src/main/res/drawable/ic_stat_ic_notification.png
--- a/fcm/app/src/main/res/layout/activity_main.xml
+++ b/fcm/app/src/main/res/layout/activity_main.xml
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity">
    <TextView
        android:id="@+id/informationTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:gravity="center_horizontal"
        android:text="@string/quickstart_message" />
    <Button
        android:id="@+id/subscribeButton"
        android:layout_width="@dimen/standard_field_width"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="20dp"
        android:text="@string/subscribe" />
    <Button
        android:id="@+id/logTokenButton"
        android:layout_width="@dimen/standard_field_width"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="@string/log_token" />
    <Button
        android:id="@+id/sendButton"
        android:layout_width="@dimen/standard_field_width"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="Send message" />
 </LinearLayout>
--- a/fcm/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
+++ b/fcm/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
    <background android:drawable="@drawable/ic_launcher_background" />
    <foreground android:drawable="@drawable/ic_launcher_foreground" />
 </adaptive-icon>
--- a/fcm/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
+++ b/fcm/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
    <background android:drawable="@drawable/ic_launcher_background" />
    <foreground android:drawable="@drawable/ic_launcher_foreground" />
 </adaptive-icon>
--- a/fcm/app/src/main/res/mipmap-hdpi/ic_launcher.png
+++ b/fcm/app/src/main/res/mipmap-hdpi/ic_launcher.png
--- a/fcm/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
+++ b/fcm/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
--- a/fcm/app/src/main/res/mipmap-mdpi/ic_launcher.png
+++ b/fcm/app/src/main/res/mipmap-mdpi/ic_launcher.png
--- a/fcm/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
+++ b/fcm/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
--- a/fcm/app/src/main/res/mipmap-xhdpi/ic_launcher.png
+++ b/fcm/app/src/main/res/mipmap-xhdpi/ic_launcher.png
--- a/fcm/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
+++ b/fcm/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
--- a/fcm/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
+++ b/fcm/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
--- a/fcm/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
+++ b/fcm/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
--- a/fcm/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
+++ b/fcm/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
--- a/fcm/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
+++ b/fcm/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
--- a/fcm/app/src/main/res/values-night/styles.xml
+++ b/fcm/app/src/main/res/values-night/styles.xml
 <resources>
    <!-- Application theme for dark theme. -->
    <style name="Theme.App" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/purple200</item>
        <item name="colorPrimaryDark">@color/purple700</item>
        <item name="colorAccent">@color/teal200</item>
    </style>
 </resources>
--- a/fcm/app/src/main/res/values/colors.xml
+++ b/fcm/app/src/main/res/values/colors.xml
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
    <color name="purple200">#BB86FC</color>
    <color name="purple500">#6200EE</color>
    <color name="purple700">#3700B3</color>
    <color name="teal200">#03DAC5</color>
 </resources>
--- a/fcm/app/src/main/res/values/dimens.xml
+++ b/fcm/app/src/main/res/values/dimens.xml
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
    <!-- Default screen margins, per the Android Design guidelines. -->
    <dimen name="activity_horizontal_margin">16dp</dimen>
    <dimen name="activity_vertical_margin">16dp</dimen>
    <dimen name="standard_field_width">200dp</dimen>
 </resources>
--- a/fcm/app/src/main/res/values/strings.xml
+++ b/fcm/app/src/main/res/values/strings.xml
 <resources>
    <string name="app_name">fcm</string>
    <string name="quickstart_message">Quickstart message</string>
    <string name="log_token">Log token</string>
    <string name="subscribe_to_weather">Subscribe</string>
    <string name="msg_subscribed">Subscribed to testForMDT topic</string>
    <string name="msg_token_fmt" translatable="false">InstanceID Token: %s</string>
    <string name="default_notification_channel_id" translatable="false">fcm_default_channel</string>
    <!--
        This is the name that users will see when interacting with this channel.
        It should describe the category of notifications that will be sent through this channel
     -->
    <!-- [START fcm_default_icon_string] -->
    <string name="default_notification_channel_name" translatable="true">testForMDT</string>
    <!-- [END fcm_default_icon_string] -->
    <string name="msg_subscribe_failed">Failed to subscribe to testForMDT topic</string>
    <string name="fcm_message">FCM Message</string>
    <string name="subscribe">Subscribe</string>
 </resources>
--- a/fcm/app/src/main/res/values/styles.xml
+++ b/fcm/app/src/main/res/values/styles.xml
 <resources>
    <!-- Base application theme. -->
    <style name="Theme.App" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/purple500</item>
        <item name="colorPrimaryDark">@color/purple700</item>
        <item name="colorAccent">@color/teal200</item>
    </style>
 </resources>
--- a/fcm/app/src/test/java/com/example/fcm/ExampleUnitTest.java
+++ b/fcm/app/src/test/java/com/example/fcm/ExampleUnitTest.java
 package com.example.fcm;
 import org.junit.Test;
 import static org.junit.Assert.*;
 /**
 * Example local unit test, which will execute on the development machine (host).
 *
 * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
 */
 public class ExampleUnitTest {
    @Test
    public void addition_isCorrect() {
        assertEquals(4, 2 + 2);
    }
 }
--- a/fcm/build.gradle
+++ b/fcm/build.gradle
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:4.1.0-alpha05"
        classpath 'com.google.gms:google-services:4.3.3'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
 }
 allprojects {
    repositories {
        google()
        jcenter()
    }
 }
 task clean(type: Delete) {
    delete rootProject.buildDir
 }
--- a/fcm/google-services.json
+++ b/fcm/google-services.json
 {
  "project_info": {
    "project_number": "977351283460",
    "firebase_url": "https://fcmfirebaseproject-ececa.firebaseio.com",
    "project_id": "fcmfirebaseproject-ececa",
    "storage_bucket": "fcmfirebaseproject-ececa.appspot.com"
  },
  "client": [
    {
      "client_info": {
        "mobilesdk_app_id": "1:977351283460:android:d8f7f379514a50463bf651",
        "android_client_info": {
          "package_name": "com.example.fcm"
        }
      },
      "oauth_client": [
        {
          "client_id": "977351283460-2sd6lffgb0k9gqp6nl2hc7j89rctiqqq.apps.googleusercontent.com",
          "client_type": 1,
          "android_info": {
            "package_name": "com.example.fcm",
            "certificate_hash": "d633de2a71e90c6d587da6f5396a401f3e2eaded"
          }
        },
        {
          "client_id": "977351283460-31tkkuo092p3sl254kcsqinm7m6fvjei.apps.googleusercontent.com",
          "client_type": 3
        }
      ],
      "api_key": [
        {
          "current_key": "AIzaSyB8-Lpyz6D1TNMZlMU9HrbvNWOvaAHY2gc"
        }
      ],
      "services": {
        "appinvite_service": {
          "other_platform_oauth_client": [
            {
              "client_id": "977351283460-31tkkuo092p3sl254kcsqinm7m6fvjei.apps.googleusercontent.com",
              "client_type": 3
            }
          ]
        }
      }
    }
  ],
  "configuration_version": "1"
 }
--- a/fcm/gradle.properties
+++ b/fcm/gradle.properties
 # Project-wide Gradle settings.
 # IDE (e.g. Android Studio) users:
 # Gradle settings configured through the IDE *will override*
 # any settings specified in this file.
 # For more details on how to configure your build environment visit
 # http://www.gradle.org/docs/current/userguide/build_environment.html
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
 org.gradle.jvmargs=-Xmx2048m
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
 # AndroidX package structure to make it clearer which packages are bundled with the
 # Android operating system, and which are packaged with your app"s APK
 # https://developer.android.com/topic/libraries/support-library/androidx-rn
 android.useAndroidX=true
 # Automatically convert third-party libraries to use AndroidX
 android.enableJetifier=true
--- a/fcm/gradle/wrapper/gradle-wrapper.jar
+++ b/fcm/gradle/wrapper/gradle-wrapper.jar
--- a/fcm/gradle/wrapper/gradle-wrapper.properties
+++ b/fcm/gradle/wrapper/gradle-wrapper.properties
 #Sat May 23 12:50:08 CEST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
 distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-bin.zip
--- a/fcm/gradlew
+++ b/fcm/gradlew
 #!/usr/bin/env sh
 ##############################################################################
 ##
 ##  Gradle start up script for UN*X
 ##
 ##############################################################################
 # Attempt to set APP_HOME
 # Resolve links: $0 may be a link
 PRG="$0"
 # Need this for relative symlinks.
 while [ -h "$PRG" ] ; do
    ls=`ls -ld "$PRG"`
    link=`expr "$ls" : '.*-> \(.*\)$'`
    if expr "$link" : '/.*' > /dev/null; then
        PRG="$link"
    else
        PRG=`dirname "$PRG"`"/$link"
    fi
 done
 SAVED="`pwd`"
 cd "`dirname \"$PRG\"`/" >/dev/null
 APP_HOME="`pwd -P`"
 cd "$SAVED" >/dev/null
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS=""
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 warn () {
    echo "$*"
 }
 die () {
    echo
    echo "$*"
    echo
    exit 1
 }
 # OS specific support (must be 'true' or 'false').
 cygwin=false
 msys=false
 darwin=false
 nonstop=false
 case "`uname`" in
  CYGWIN* )
    cygwin=true
    ;;
  Darwin* )
    darwin=true
    ;;
  MINGW* )
    msys=true
    ;;
  NONSTOP* )
    nonstop=true
    ;;
 esac
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then
    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
        # IBM's JDK on AIX uses strange locations for the executables
        JAVACMD="$JAVA_HOME/jre/sh/java"
    else
        JAVACMD="$JAVA_HOME/bin/java"
    fi
    if [ ! -x "$JAVACMD" ] ; then
        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
    fi
 else
    JAVACMD="java"
    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
 fi
 # Increase the maximum file descriptors if we can.
 if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
    MAX_FD_LIMIT=`ulimit -H -n`
    if [ $? -eq 0 ] ; then
        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
            MAX_FD="$MAX_FD_LIMIT"
        fi
        ulimit -n $MAX_FD
        if [ $? -ne 0 ] ; then
            warn "Could not set maximum file descriptor limit: $MAX_FD"
        fi
    else
        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
    fi
 fi
 # For Darwin, add options to specify how the application appears in the dock
 if $darwin; then
    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
 fi
 # For Cygwin, switch paths to Windows format before running java
 if $cygwin ; then
    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
    JAVACMD=`cygpath --unix "$JAVACMD"`
    # We build the pattern for arguments to be converted via cygpath
    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
    SEP=""
    for dir in $ROOTDIRSRAW ; do
        ROOTDIRS="$ROOTDIRS$SEP$dir"
        SEP="|"
    done
    OURCYGPATTERN="(^($ROOTDIRS))"
    # Add a user-defined pattern to the cygpath arguments
    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
    fi
    # Now convert the arguments - kludge to limit ourselves to /bin/sh
    i=0
    for arg in "$@" ; do
        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
        else
            eval `echo args$i`="\"$arg\""
        fi
        i=$((i+1))
    done
    case $i in
        (0) set -- ;;
        (1) set -- "$args0" ;;
        (2) set -- "$args0" "$args1" ;;
        (3) set -- "$args0" "$args1" "$args2" ;;
        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
    esac
 fi
 # Escape application args
 save () {
    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
    echo " "
 }
 APP_ARGS=$(save "$@")
 # Collect all arguments for the java command, following the shell quoting and substitution rules
 eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
 # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
 if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
  cd "$(dirname "$0")"
 fi
 exec "$JAVACMD" "$@"
--- a/fcm/gradlew.bat
+++ b/fcm/gradlew.bat
@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem  Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
 if "%OS%"=="Windows_NT" setlocal
 set DIRNAME=%~dp0
 if "%DIRNAME%" == "" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 set DEFAULT_JVM_OPTS=
@rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
 if "%ERRORLEVEL%" == "0" goto init
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 echo.
 echo Please set the JAVA_HOME variable in your environment to match the
 echo location of your Java installation.
 goto fail
 :findJavaFromJavaHome
 set JAVA_HOME=%JAVA_HOME:"=%
 set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 if exist "%JAVA_EXE%" goto init
 echo.
 echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
 echo.
 echo Please set the JAVA_HOME variable in your environment to match the
 echo location of your Java installation.
 goto fail
 :init
@rem Get command-line arguments, handling Windows variants
 if not "%OS%" == "Windows_NT" goto win9xME_args
 :win9xME_args
@rem Slurp the command line arguments.
 set CMD_LINE_ARGS=
 set _SKIP=2
 :win9xME_args_slurp
 if "x%~1" == "x" goto execute
 set CMD_LINE_ARGS=%*
 :execute
@rem Setup the command line
 set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
 "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
 :end
@rem End local scope for the variables with windows NT shell
 if "%ERRORLEVEL%"=="0" goto mainEnd
 :fail
 rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
 rem the _cmd.exe /c_ return code!
 if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
 exit /b 1
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal
 :omega
--- a/fcm/settings.gradle
+++ b/fcm/settings.gradle
 include ':app'
 rootProject.name = "fcm"