diff --git a/app/src/main/java/com/example/citrusclient/views/MainActivity.java b/app/src/main/java/com/example/citrusclient/views/MainActivity.java
index 02b7179..366d24f 100644
--- a/app/src/main/java/com/example/citrusclient/views/MainActivity.java
+++ b/app/src/main/java/com/example/citrusclient/views/MainActivity.java
@@ -10,13 +10,25 @@
 import androidx.core.view.ViewCompat;
 import androidx.core.view.WindowInsetsCompat;
 import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
 
+import com.example.citrusclient.Citrus;
 import com.example.citrusclient.R;
+import com.example.citrusclient.models.Book;
+import com.example.citrusclient.viewmodels.BooksViewModel;
 import com.google.android.material.bottomnavigation.BottomNavigationView;
 import com.google.android.material.navigation.NavigationBarView;
 
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
 public class MainActivity extends AppCompatActivity {
 
+    BooksViewModel booksViewModel;
+    Citrus citrus;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -28,6 +40,17 @@
             return insets;
         });
 
+
+
+        citrus = (Citrus) getApplication();
+        booksViewModel = new ViewModelProvider(this).get(BooksViewModel.class);
+        booksViewModel.getBookLiveData().observe(this, new Observer<HashMap<Integer, Book>>() {
+            @Override
+            public void onChanged(HashMap<Integer, Book> integerBookHashMap) {
+                citrus.setBook(new ArrayList<>(integerBookHashMap.values()));
+            }
+        });
+
         showFragment(new MyBookshelfFragment());
 
         setNavViewEvent();