diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 2c7e034..e9969a1 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -7,7 +7,7 @@
         <option name="testRunner" value="GRADLE" />
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="1.8" />
+        <option name="gradleJvm" value="11" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 824d6d6..cebfe61 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -3,8 +3,12 @@
   <component name="DesignSurface">
     <option name="filePathToZoomLevelMap">
       <map>
+        <entry key="app/src/main/res/layout/activity_bprofile.xml" value="0.14947916666666666" />
+        <entry key="app/src/main/res/layout/activity_home.xml" value="0.2341485507246377" />
         <entry key="app/src/main/res/layout/fragment_account.xml" value="0.16770833333333332" />
-        <entry key="app/src/main/res/layout/fragment_home.xml" value="0.20677083333333332" />
+        <entry key="app/src/main/res/layout/fragment_book.xml" value="0.14947916666666666" />
+        <entry key="app/src/main/res/layout/fragment_home.xml" value="0.165" />
+        <entry key="app/src/main/res/layout/fragment_library.xml" value="0.14947916666666666" />
         <entry key="app/src/main/res/layout/info_item.xml" value="0.375" />
         <entry key="app/src/main/res/menu/search_menu.xml" value="0.3098958333333333" />
       </map>
@@ -16,4 +20,11 @@
   <component name="ProjectType">
     <option name="id" value="Android" />
   </component>
+  <component name="VisualizationToolProject">
+    <option name="state">
+      <ProjectState>
+        <option name="scale" value="0.165" />
+      </ProjectState>
+    </option>
+  </component>
 </project>
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index d713139..f89edf3 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -47,35 +47,50 @@ dependencies {
 
     implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'com.google.android.material:material:1.3.0'
-
     implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
-    implementation 'com.google.firebase:firebase-auth:20.0.3'
-    implementation 'com.google.firebase:firebase-database:19.7.0'
     implementation 'androidx.navigation:navigation-fragment:2.3.3'
     implementation 'androidx.navigation:navigation-ui:2.3.3'
     implementation 'com.android.support:multidex:1.0.3'
-
-    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
-
-    implementation 'com.google.firebase:firebase-firestore:22.1.2'
-    implementation 'com.google.firebase:firebase-storage:19.2.2'
     implementation 'com.squareup.picasso:picasso:2.71828'
-    implementation "androidx.recyclerview:recyclerview:+"
     implementation 'com.android.support:design:+'
     implementation 'com.android.support:cardview-v7:+'
-    implementation 'com.firebaseui:firebase-ui-database:6.2.0'
-    implementation 'androidx.recyclerview:recyclerview-selection:+'
     implementation 'com.github.bumptech.glide:glide:4.12.0'
     implementation 'com.google.android.gms:play-services-maps:+'
     implementation 'com.google.android.gms:play-services-location:+'
     implementation 'com.sun.mail:android-mail:1.6.2'
     implementation 'com.sun.mail:android-activation:1.6.2'
-
-
-
     annotationProcessor 'com.github.bumptech.glide:compiler:4.12.0'
-
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+
+
+    implementation platform('com.google.firebase:firebase-bom:28.4.0')
+    implementation 'com.google.firebase:firebase-storage'
+    implementation 'com.google.firebase:firebase-auth'
+    implementation 'com.google.firebase:firebase-database'
+    implementation 'com.google.firebase:firebase-firestore'
+    implementation 'com.firebaseui:firebase-ui-database:8.0.0'
+    // FirebaseUI for Cloud Firestore
+    implementation 'com.firebaseui:firebase-ui-firestore:8.0.0'
+    // FirebaseUI for Firebase Auth
+    implementation 'com.firebaseui:firebase-ui-auth:8.0.0'
+    // FirebaseUI for Cloud Storage
+    implementation 'com.firebaseui:firebase-ui-storage:8.0.0'
+
+    implementation "com.google.firebase:firebase-database:"
+
+    implementation "androidx.legacy:legacy-support-v4:"
+    implementation "androidx.recyclerview:recyclerview:"
+
+
+
+
+
+
+
+
+
+
+
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/booksharing21/BProfileActivity.java b/app/src/main/java/com/example/booksharing21/BProfileActivity.java
index 702ae02..1206daf 100644
--- a/app/src/main/java/com/example/booksharing21/BProfileActivity.java
+++ b/app/src/main/java/com/example/booksharing21/BProfileActivity.java
@@ -161,7 +161,7 @@ public class BProfileActivity extends AppCompatActivity implements View.OnClickL
 
         Intent intent = new Intent(Intent.ACTION_SEND);
         intent.putExtra(Intent.EXTRA_EMAIL, uemail);
-        intent.putExtra(Intent.EXTRA_SUBJECT,pbookname.getText().toString());
+        intent.putExtra(Intent.EXTRA_SUBJECT,ubookname.getText().toString());
         intent.putExtra(Intent.EXTRA_TEXT,message);
         intent.setType("message/rfc822");
         startActivity(Intent.createChooser(intent,"Choose Email Client"));
diff --git a/app/src/main/java/com/example/booksharing21/HomeFragment.java b/app/src/main/java/com/example/booksharing21/HomeFragment.java
index cc9157d..7973a7f 100644
--- a/app/src/main/java/com/example/booksharing21/HomeFragment.java
+++ b/app/src/main/java/com/example/booksharing21/HomeFragment.java
@@ -147,6 +147,8 @@ public class HomeFragment extends Fragment  {
         LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
         inforec.setLayoutManager(layoutManager);
         inforec.setHasFixedSize(true);
+        layoutManager.setReverseLayout(true);
+        layoutManager.setStackFromEnd(true);
 
 
         // Array list
@@ -216,7 +218,27 @@ public class HomeFragment extends Fragment  {
 
 
 
+    public void database(){
+        DatabaseReference connectedRef = FirebaseDatabase.getInstance().getReference(".info/connected");
+        connectedRef.addValueEventListener(new ValueEventListener() {
+            @Override
+            public void onDataChange(DataSnapshot snapshot) {
+                boolean connected = snapshot.getValue(Boolean.class);
+                if (connected) {
+                    System.out.println("connected");
+                } else {
+                    System.out.println("not connected");
+                }
+            }
 
+            @Override
+            public void onCancelled(DatabaseError error) {
+                System.err.println("Listener was cancelled");
+            }
+        });
+
+
+    }
 
 
 
@@ -227,7 +249,7 @@ public class HomeFragment extends Fragment  {
     public void onStart()
     {
         super.onStart();
-
+        database();
         GetDataFromFirebase(); //onStart Called
     }
 
diff --git a/app/src/main/java/com/example/booksharing21/LibraryFragment.java b/app/src/main/java/com/example/booksharing21/LibraryFragment.java
index 0a14eed..45c4d1d 100644
--- a/app/src/main/java/com/example/booksharing21/LibraryFragment.java
+++ b/app/src/main/java/com/example/booksharing21/LibraryFragment.java
@@ -156,6 +156,8 @@ public class LibraryFragment extends Fragment {
                         info.setPostid(dataSnapshot.child("postid").getValue().toString());
                         info.setUrl(dataSnapshot.child("url").getValue().toString());
                         info.setBookname(dataSnapshot.child("book name").getValue().toString());
+                        info.setIsbn(dataSnapshot.child("isbn").getValue().toString());
+                        info.setAuthor(dataSnapshot.child("author").getValue().toString());
 
 
                         infoList.add(info);
diff --git a/app/src/main/res/layout/activity_bprofile.xml b/app/src/main/res/layout/activity_bprofile.xml
index 45fd4fa..191aaae 100644
--- a/app/src/main/res/layout/activity_bprofile.xml
+++ b/app/src/main/res/layout/activity_bprofile.xml
@@ -147,7 +147,8 @@
             android:layout_marginTop="20dp"
             android:background="#fff"
             android:ems="10"
-            android:hint="If you are interested in this book, write your message to send an email to the owner"
+            android:hint="If you are interested in this book,
+            write your message to send an email to the owner"
             android:inputType="text"
             android:maxLength="500"
             android:padding="8dp"
diff --git a/app/src/main/res/layout/fragment_home.xml b/app/src/main/res/layout/fragment_home.xml
index e065b2d..dfae051 100644
--- a/app/src/main/res/layout/fragment_home.xml
+++ b/app/src/main/res/layout/fragment_home.xml
@@ -9,20 +9,32 @@
 
     <!-- TODO: Update blank fragment layout -->
 
+    <RelativeLayout
+        android:layout_height="match_parent"
+         android:layout_width="match_parent">
 
-    <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/re_view"
+    <androidx.appcompat.widget.SearchView
+        android:id="@+id/searchview"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:layout_margin="10dp"
-        android:scrollbars="vertical"
+        android:layout_height="?attr/actionBarSize"
+        android:layout_margin="5dp"
         android:padding="5dp"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toTopOf="@+id/re_view"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:queryHint="Search">
+    </androidx.appcompat.widget.SearchView>
 
 
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/re_view"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_below="@+id/searchview"
+            android:padding="5dp"
+            android:scrollbars="vertical"
+            app:layout_constraintTop_toBottomOf="@+id/searchview"
+            tools:layout_editor_absoluteX="5dp" />
+    </RelativeLayout>
 
+</androidx.constraintlayout.widget.ConstraintLayout>
 
-</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_library.xml b/app/src/main/res/layout/fragment_library.xml
index 331ebc8..688caaa 100644
--- a/app/src/main/res/layout/fragment_library.xml
+++ b/app/src/main/res/layout/fragment_library.xml
@@ -24,10 +24,10 @@
 
     <androidx.recyclerview.widget.RecyclerView
         android:id="@+id/lib_re_view"
-        android:layout_width="331dp"
+        android:layout_width="match_parent"
         android:layout_height="600dp"
-        android:layout_margin="36dp"
-        android:padding="16dp"
+        android:layout_margin="20dp"
+        android:padding="5dp"
         android:scrollbars="vertical"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
diff --git a/app/src/main/res/layout/info_item.xml b/app/src/main/res/layout/info_item.xml
index c7432d2..207f761 100644
--- a/app/src/main/res/layout/info_item.xml
+++ b/app/src/main/res/layout/info_item.xml
@@ -1,4 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
+
+
+
 <androidx.cardview.widget.CardView
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
diff --git a/build.gradle b/build.gradle
index e9f1ecd..94f684c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,8 +5,8 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.2.1'
-        classpath 'com.google.gms:google-services:4.3.5'
+        classpath 'com.android.tools.build:gradle:7.0.1'
+        classpath 'com.google.gms:google-services:4.3.10'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 72e8636..b2e68d6 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-bin.zip