diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
index 3c6ab32..d45f8d2 100644
Binary files a/.idea/caches/build_file_checksums.ser and b/.idea/caches/build_file_checksums.ser differ
diff --git a/app/build.gradle b/app/build.gradle
index 42c4c5f..cafceb7 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,8 +1,19 @@
+buildscript {
+    repositories {
+        maven { url 'https://plugins.gradle.org/m2/'}
+    }
+    dependencies {
+        classpath 'gradle.plugin.com.onesignal:onesignal-gradle-plugin:[0.11.0, 0.99.99]'
+    }
+}
+
 apply plugin: 'com.android.application'
 apply plugin: 'io.fabric'
+apply plugin: 'com.onesignal.androidsdk.onesignal-gradle-plugin'
 
 repositories {
     maven { url 'https://maven.fabric.io/public' }
+    maven { url 'https://maven.google.com' }
 }
 
 android {
@@ -12,10 +23,15 @@ android {
         applicationId "ch.pizzapp.capri"
         minSdkVersion 16
         targetSdkVersion 27
-        versionCode 13  // play store'daki version --> canlı: 8 - dahili test: 12
-        versionName "2.15"   // play store'daki version --> canlı: 2.1 -  dahili test: 2.14
+        versionCode 13  // play store'daki version --> canlı: 12 - dahili test: 12
+        versionName "2.15"   // play store'daki version --> canlı: 2.14 -  dahili test: 2.14
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         multiDexEnabled true
+        manifestPlaceholders = [
+                onesignal_app_id: '8cff62c3-88f0-4dcf-ab72-36d9aa272e30',
+                // Project number pulled from dashboard, local value is ignored.
+                onesignal_google_project_number: 'REMOTE'
+        ]
     }
     buildTypes {
         release {
@@ -43,6 +59,7 @@ dependencies {
     implementation 'com.google.android.gms:play-services-base:15.0.1'
     implementation 'com.google.android.gms:play-services-location:15.0.1'
     implementation 'com.google.android.gms:play-services-wallet:15.0.1'
+    implementation 'com.google.firebase:firebase-messaging:17.3.0'
 
     implementation 'com.squareup.retrofit2:retrofit:2.3.0'
     implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
@@ -61,6 +78,7 @@ dependencies {
     implementation 'com.github.badoualy:stepper-indicator:1.0.7'
     implementation 'io.github.luizgrp.sectionedrecyclerviewadapter:sectionedrecyclerviewadapter:1.1.3'
 
+    implementation 'com.onesignal:OneSignal:[3.9.1, 3.99.99]'
     implementation 'com.afollestad.material-dialogs:core:0.9.6.0'
     implementation 'uk.co.chrisjenx:calligraphy:2.3.0'
     implementation 'com.wdullaer:materialdatetimepicker:3.6.3'
diff --git a/app/src/main/java/ch/pizzapp/android/App.java b/app/src/main/java/ch/pizzapp/android/App.java
index 3e46076..99199c1 100644
--- a/app/src/main/java/ch/pizzapp/android/App.java
+++ b/app/src/main/java/ch/pizzapp/android/App.java
@@ -5,6 +5,7 @@ import android.support.multidex.MultiDexApplication;
 
 import com.crashlytics.android.Crashlytics;
 import com.jakewharton.picasso.OkHttp3Downloader;
+import com.onesignal.OneSignal;
 import com.squareup.picasso.Picasso;
 
 import io.fabric.sdk.android.Fabric;
@@ -21,7 +22,8 @@ public class App extends MultiDexApplication {
         super.onCreate();
         initCalligraphy();
         initPicasso();
-        Fabric.with(this, new Crashlytics());
+        initFabric();
+        initOneSignal();
     }
 
     private void initCalligraphy(){
@@ -49,4 +51,14 @@ public class App extends MultiDexApplication {
         */
     }
 
+    private void initFabric(){
+        Fabric.with(this, new Crashlytics());
+    }
+
+    private void initOneSignal(){
+        OneSignal.startInit(this)
+                .inFocusDisplaying(OneSignal.OSInFocusDisplayOption.Notification)
+                .unsubscribeWhenNotificationsAreDisabled(true)
+                .init();
+    }
 }
\ No newline at end of file