Fix issue #103 - Scroll to top for notifications when taping the bottom item menu.

app/src/main/java/app/fedilab/android/BaseMainActivity.java

@@ -116,6 +116,7 @@ import app.fedilab.android.helper.ThemeHelper;
 import app.fedilab.android.ui.fragment.timeline.FragmentMastodonConversation;
 import app.fedilab.android.ui.fragment.timeline.FragmentMastodonNotification;
 import app.fedilab.android.ui.fragment.timeline.FragmentMastodonTimeline;
+import app.fedilab.android.ui.fragment.timeline.FragmentNotificationContainer;
 import app.fedilab.android.viewmodel.mastodon.AccountsVM;
 import app.fedilab.android.viewmodel.mastodon.InstancesVM;
 import app.fedilab.android.viewmodel.mastodon.TimelinesVM;
@@ -893,6 +894,9 @@ public abstract class BaseMainActivity extends BaseActivity implements NetworkSt
             } else if (fragment instanceof FragmentMastodonConversation) {
                 FragmentMastodonConversation fragmentMastodonConversation = ((FragmentMastodonConversation) fragment);
                 fragmentMastodonConversation.scrollToTop();
+            } else if (fragment instanceof FragmentNotificationContainer) {
+                FragmentNotificationContainer fragmentNotificationContainer = ((FragmentNotificationContainer) fragment);
+                fragmentNotificationContainer.scrollToTop();
             }
         }
     }

app/src/main/java/app/fedilab/android/ui/fragment/timeline/FragmentNotificationContainer.java

@@ -61,6 +61,18 @@ public class FragmentNotificationContainer extends Fragment {
     }
 
 
+    public void scrollToTop() {
+        if (binding != null) {
+            FedilabNotificationPageAdapter fedilabNotificationPageAdapter = ((FedilabNotificationPageAdapter) binding.viewpager.getAdapter());
+            if (fedilabNotificationPageAdapter != null) {
+                FragmentMastodonNotification fragmentMastodonNotification = (FragmentMastodonNotification) fedilabNotificationPageAdapter.getCurrentFragment();
+                if (fragmentMastodonNotification != null) {
+                    fragmentMastodonNotification.scrollToTop();
+                }
+            }
+        }
+    }
+
     @SuppressLint("ApplySharedPref")
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {