Add loading spinner to notifications

app/src/main/java/app/insti/fragment/NotificationsFragment.java

@@ -75,6 +75,12 @@ public class NotificationsFragment extends BaseFragment {
     }
 
     private void showNotifications(final List<Notification> notifications) {
+        /* Check if activity is done with */
+        if (getActivity() == null) return;
+
+        /* Hide loader */
+        getActivity().findViewById(R.id.loadingPanel).setVisibility(View.GONE);
+
         NotificationsAdapter notificationsAdapter = new NotificationsAdapter(notifications, new ItemClickListener() {
             @Override
             public void onItemClick(View v, int position) {

app/src/main/res/layout/fragment_notifications.xml

@@ -9,4 +9,16 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
 
+    <RelativeLayout
+        android:id="@+id/loadingPanel"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="center">
+
+        <ProgressBar
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:indeterminate="true" />
+    </RelativeLayout>
+
 </FrameLayout>