Scroll feed to top when bottom feed tab clicked

app/src/main/java/awais/instagrabber/activities/MainActivity.java

@@ -29,6 +29,7 @@ import androidx.appcompat.widget.SearchView;
 import androidx.appcompat.widget.Toolbar;
 import androidx.coordinatorlayout.widget.CoordinatorLayout;
 import androidx.core.app.NotificationManagerCompat;
+import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentManager;
 import androidx.lifecycle.LiveData;
 import androidx.navigation.NavBackStackEntry;
@@ -56,6 +57,7 @@ import awais.instagrabber.asyncs.SuggestionsFetcher;
 import awais.instagrabber.customviews.helpers.CustomHideBottomViewOnScrollBehavior;
 import awais.instagrabber.databinding.ActivityMainBinding;
 import awais.instagrabber.fragments.PostViewV2Fragment;
+import awais.instagrabber.fragments.main.FeedFragment;
 import awais.instagrabber.fragments.settings.MorePreferencesFragmentDirections;
 import awais.instagrabber.interfaces.FetchListener;
 import awais.instagrabber.models.IntentModel;
@@ -429,6 +431,16 @@ public class MainActivity extends BaseLanguageActivity implements FragmentManage
                 firstFragmentGraphIndex);
         navControllerLiveData.observe(this, navController -> setupNavigation(binding.toolbar, navController));
         currentNavControllerLiveData = navControllerLiveData;
+        binding.bottomNavView.setOnNavigationItemReselectedListener(item -> {
+            // Log.d(TAG, "setupBottomNavigationBar: item: " + item);
+            final Fragment navHostFragment = getSupportFragmentManager().findFragmentById(R.id.main_nav_host);
+            if (navHostFragment != null) {
+                final Fragment fragment = navHostFragment.getChildFragmentManager().getPrimaryNavigationFragment();
+                if (fragment instanceof FeedFragment) {
+                    ((FeedFragment) fragment).scrollToTop();
+                }
+            }
+        });
     }
 
     private void setBottomNavSelectedItem(final int navId) {

app/src/main/java/awais/instagrabber/customviews/PostsRecyclerView.java

@@ -9,6 +9,7 @@ import androidx.annotation.Nullable;
 import androidx.lifecycle.LifecycleOwner;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.lifecycle.ViewModelStoreOwner;
+import androidx.recyclerview.widget.LinearSmoothScroller;
 import androidx.recyclerview.widget.RecyclerView;
 import androidx.recyclerview.widget.StaggeredGridLayoutManager;
 import androidx.transition.ChangeBounds;
@@ -80,6 +81,13 @@ public class PostsRecyclerView extends RecyclerView {
         }
     };
 
+    private final RecyclerView.SmoothScroller smoothScroller = new LinearSmoothScroller(getContext()) {
+        @Override
+        protected int getVerticalSnapPreference() {
+            return LinearSmoothScroller.SNAP_TO_START;
+        }
+    };
+
     public PostsRecyclerView(@NonNull final Context context) {
         super(context);
     }
@@ -313,4 +321,10 @@ public class PostsRecyclerView extends RecyclerView {
         super.onDetachedFromWindow();
         lifeCycleOwner = null;
     }
+
+    @Override
+    public void smoothScrollToPosition(final int position) {
+        smoothScroller.setTargetPosition(position);
+        layoutManager.startSmoothScroll(smoothScroller);
+    }
 }

app/src/main/java/awais/instagrabber/fragments/main/FeedFragment.java

@@ -380,4 +380,9 @@ public class FeedFragment extends Fragment implements SwipeRefreshLayout.OnRefre
                 preferences -> new Handler().postDelayed(() -> binding.feedRecyclerView.setLayoutPreferences(preferences), 200));
         fragment.show(getChildFragmentManager(), "posts_layout_preferences");
     }
+
+    public void scrollToTop() {
+        binding.feedRecyclerView.smoothScrollToPosition(0);
+        binding.storiesContainer.setExpanded(true);
+    }
 }

app/src/main/java/awais/instagrabber/fragments/main/ProfileFragment.java

@@ -759,7 +759,7 @@ public class ProfileFragment extends Fragment implements SwipeRefreshLayout.OnRe
                         new ServiceCallback<FriendshipRepoChangeRootResponse>() {
                             @Override
                             public void onSuccess(final FriendshipRepoChangeRootResponse result) {
-                                Log.d(TAG, "Unfollow success: " + result);
+                                // Log.d(TAG, "Unfollow success: " + result);
                                 onRefresh();
                             }
 
@@ -776,7 +776,7 @@ public class ProfileFragment extends Fragment implements SwipeRefreshLayout.OnRe
                         new ServiceCallback<FriendshipRepoChangeRootResponse>() {
                             @Override
                             public void onSuccess(final FriendshipRepoChangeRootResponse result) {
-                                Log.d(TAG, "Follow success: " + result);
+                                // Log.d(TAG, "Follow success: " + result);
                                 onRefresh();
                             }
 

app/src/main/java/awais/instagrabber/utils/NavigationExtensions.java

@@ -19,9 +19,11 @@ import java.util.List;
 
 import awais.instagrabber.R;
 
+/**
+ * This is a Java rewrite of <a href="https://github.com/android/architecture-components-samples/blob/master/NavigationAdvancedSample/app/src/main/java/com/example/android/navigationadvancedsample/NavigationExtensions.kt">NavigationExtensions</a>
+ * from architecture-components-samples. Some modifications have been done, check git history.
+ */
 public class NavigationExtensions {
-    // private static final String TAG = "NavigationExtensions";
-
     @NonNull
     public static LiveData<NavController> setupWithNavController(@NonNull final BottomNavigationView bottomNavigationView,
                                                                  @NonNull List<Integer> navGraphIds,