Added "No bookmarks!" TextView to bookmarks activity

res/layout/activity_bookmarks.xml

@@ -34,6 +34,8 @@
         android:id="@+id/bookmarks_list_nobookmarks"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_centerInParent="true"
+        android:gravity="center"
         android:paddingBottom="15dp"
         android:paddingLeft="10dp"
         android:paddingRight="10dp"

res/values/strings.xml

@@ -53,7 +53,7 @@
   <string name="no_reader_application_installed">Could not find an installed application for this type of file</string>
   <string name="customapp_missing_content">Your application is corrupted.\nThis might happen when you remove files on the SD Card.\nYou need to uninstall then reinstall the App from the Play Store.</string>
   <string name="go_to_play_store">Go to Play Store</string>
-  <string name="no_bookmarks">No Bookmarks!</string>
+  <string name="no_bookmarks">No bookmarks!</string>
   <string name="menu_bookmarks_list">Bookmarks</string>
   <string name="no_section_info">No Content Headers Found</string>
   <string name="request_storage">To search for zim files we need access to your storage</string>

src/org/kiwix/kiwixmobile/views/BookmarksActivity.java

@@ -16,6 +16,7 @@ import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.LinearLayout;
 import android.widget.ListView;
+import android.widget.TextView;
 import android.widget.Toast;
 import java.util.ArrayList;
 import org.kiwix.kiwixmobile.R;
@@ -31,6 +32,7 @@ public class BookmarksActivity extends AppCompatActivity
   private int numOfSelected;
   SparseBooleanArray sparseBooleanArray;
   private LinearLayout snackbarLayout;
+  private TextView noBookmarksTextView;
 
   @Override protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
@@ -40,9 +42,13 @@ public class BookmarksActivity extends AppCompatActivity
     contents = getIntent().getStringArrayListExtra("bookmark_contents");
     selected = new ArrayList<>();
     bookmarksList = (ListView) findViewById(R.id.bookmarks_list);
+    noBookmarksTextView = (TextView) findViewById(R.id.bookmarks_list_nobookmarks);
     adapter = new ArrayAdapter(getApplicationContext(), R.layout.bookmarks_row, R.id.bookmark_title,
         contents);
     bookmarksList.setAdapter(adapter);
+
+    setNoBookmarksState();
+
     bookmarksList.setChoiceMode(AbsListView.CHOICE_MODE_MULTIPLE_MODAL);
     bookmarksList.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
       @Override public void onItemCheckedStateChanged(ActionMode mode, int position, long id,
@@ -90,6 +96,13 @@ public class BookmarksActivity extends AppCompatActivity
     bookmarksList.setOnItemClickListener(this);
   }
 
+  private void setNoBookmarksState() {
+    if(bookmarksList.getCount() == 0)
+      noBookmarksTextView.setVisibility(View.VISIBLE);
+    else
+      noBookmarksTextView.setVisibility(View.GONE);
+  }
+
   private void popDeleteBookmarksSnackbar() {
     Snackbar bookmarkDeleteSnackbar =
         Snackbar.make(snackbarLayout, numOfSelected + " deleted", Snackbar.LENGTH_LONG)
@@ -98,6 +111,7 @@ public class BookmarksActivity extends AppCompatActivity
                 contents.clear();
                 contents.addAll(tempContents);
                 adapter.notifyDataSetChanged();
+                setNoBookmarksState();
                 Toast.makeText(getApplicationContext(), "Bookmarks restored", Toast.LENGTH_SHORT).show();
               }
             });
@@ -112,6 +126,7 @@ public class BookmarksActivity extends AppCompatActivity
       contents.remove(sparseBooleanArray.keyAt(i));
 
     adapter.notifyDataSetChanged();
+    setNoBookmarksState();
   }
 
   private void setUpToolbar() {