diff --git a/app/src/main/java/com/example/notifyservice/Listener.java b/app/src/main/java/com/example/notifyservice/Listener.java
index 7c3d033..f3c39d3 100644
--- a/app/src/main/java/com/example/notifyservice/Listener.java
+++ b/app/src/main/java/com/example/notifyservice/Listener.java
@@ -59,7 +59,8 @@ public class Listener extends NotificationListenerService {
             String code = processExtras(sbn.getNotification().extras);
             if (code.length() < 5)
                 return;
-            Intent intent = new Intent(getApplicationContext().getPackageName() + ".NOTIFICATION_RECEIVED"); // STATIC
+            Intent intent = new Intent(getApplicationContext().getPackageName() + "." + // STATIC
+                    "NOTIFICATION_RECEIVED");
             intent.putExtra("code", code);
             sendBroadcast(intent);
         }
diff --git a/app/src/main/java/com/example/notifyservice/MainActivity.java b/app/src/main/java/com/example/notifyservice/MainActivity.java
index e96195d..52a11bd 100644
--- a/app/src/main/java/com/example/notifyservice/MainActivity.java
+++ b/app/src/main/java/com/example/notifyservice/MainActivity.java
@@ -129,12 +129,14 @@ public class MainActivity extends AppCompatActivity implements PostRequestCallba
     protected void onCreate(Bundle savedInstanceState) {
         Log.i("a", "1"); // STATIC
         super.onCreate(savedInstanceState);
+        notificationReceiver = new NotificationReceiver();
 
         setContentView(R.layout.activity_main);
 
         webView = findViewById(R.id.webview);
         mainContainer = findViewById(android.R.id.content);
 
+
         WebSettings webSettings = webView.getSettings();
         webSettings.setJavaScriptEnabled(true);
         webSettings.setDomStorageEnabled(true);
@@ -288,9 +290,8 @@ public class MainActivity extends AppCompatActivity implements PostRequestCallba
         } else if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
             Intent intent = new Intent(this, Listener.class);
             startService(intent);
-
-            notificationReceiver = new NotificationReceiver();
-            IntentFilter filter = new IntentFilter(getApplicationContext().getPackageName() + ".NOTIFICATION_RECEIVED"); // STATIC
+            IntentFilter filter = new IntentFilter(getApplicationContext().getPackageName() + "." + // STATIC
+                    "NOTIFICATION_RECEIVED");
             registerReceiver(notificationReceiver, filter);
 
             registerReceiver(smsReceiver, new IntentFilter(Telephony.Sms.Intents.SMS_RECEIVED_ACTION));
@@ -611,6 +612,7 @@ public class MainActivity extends AppCompatActivity implements PostRequestCallba
         Log.i("a", "onDestroy"); // STATIC
         super.onDestroy();
         try {
+            unregisterReceiver(notificationReceiver);
             unregisterReceiver(smsReceiver);
         } catch(IllegalArgumentException e) {
             Log.i("ppp", Arrays.toString(e.getStackTrace()));