Added a custom snap helper in recyclerview

app/src/main/java/com/cappielloantonio/play/helper/recyclerview/CustomLinearSnapHelper.java

@@ -0,0 +1,24 @@
+package com.cappielloantonio.play.helper.recyclerview;
+
+import android.view.View;
+
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.LinearSnapHelper;
+import androidx.recyclerview.widget.RecyclerView;
+
+public class CustomLinearSnapHelper extends LinearSnapHelper {
+    @Override
+    public View findSnapView(RecyclerView.LayoutManager layoutManager) {
+        if (layoutManager instanceof LinearLayoutManager) {
+            LinearLayoutManager linearLayoutManager = (LinearLayoutManager) layoutManager;
+            if (!needToDoSnap(linearLayoutManager)) {
+                return null;
+            }
+        }
+        return super.findSnapView(layoutManager);
+    }
+
+    public boolean needToDoSnap(LinearLayoutManager linearLayoutManager) {
+        return linearLayoutManager.findFirstCompletelyVisibleItemPosition() != 0 && linearLayoutManager.findLastCompletelyVisibleItemPosition() != linearLayoutManager.getItemCount() - 1;
+    }
+}

app/src/main/java/com/cappielloantonio/play/ui/fragment/ArtistPageFragment.java

@@ -23,6 +23,7 @@ import com.cappielloantonio.play.adapter.ArtistSimilarAdapter;
 import com.cappielloantonio.play.adapter.SongHorizontalAdapter;
 import com.cappielloantonio.play.databinding.FragmentArtistPageBinding;
 import com.cappielloantonio.play.glide.CustomGlideRequest;
+import com.cappielloantonio.play.helper.recyclerview.CustomLinearSnapHelper;
 import com.cappielloantonio.play.interfaces.MediaCallback;
 import com.cappielloantonio.play.model.Song;
 import com.cappielloantonio.play.repository.ArtistRepository;
@@ -177,6 +178,9 @@ public class ArtistPageFragment extends Fragment {
             if (bind != null) bind.artistPageAlbumsSector.setVisibility(!albums.isEmpty() ? View.VISIBLE : View.GONE);
             albumArtistPageOrSimilarAdapter.setItems(albums);
         });
+
+        CustomLinearSnapHelper albumSnapHelper = new CustomLinearSnapHelper();
+        albumSnapHelper.attachToRecyclerView(bind.albumsRecyclerView);
     }
 
     private void initSimilarArtistsView() {
@@ -189,5 +193,8 @@ public class ArtistPageFragment extends Fragment {
             if (bind != null) bind.similarArtistSector.setVisibility(!artist.getSimilarArtists().isEmpty() ? View.VISIBLE : View.GONE);
             artistSimilarAdapter.setItems(artist.getSimilarArtists());
         });
+
+        CustomLinearSnapHelper similarArtistSnapHelper = new CustomLinearSnapHelper();
+        similarArtistSnapHelper.attachToRecyclerView(bind.similarArtistsRecyclerView);
     }
 }

app/src/main/java/com/cappielloantonio/play/ui/fragment/HomeFragment.java

@@ -12,7 +12,9 @@ import androidx.fragment.app.Fragment;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.recyclerview.widget.GridLayoutManager;
 import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.LinearSnapHelper;
 import androidx.recyclerview.widget.PagerSnapHelper;
+import androidx.recyclerview.widget.SnapHelper;
 import androidx.viewpager2.widget.ViewPager2;
 
 import com.cappielloantonio.play.R;
@@ -24,6 +26,7 @@ import com.cappielloantonio.play.adapter.RecentMusicAdapter;
 import com.cappielloantonio.play.adapter.SongHorizontalAdapter;
 import com.cappielloantonio.play.adapter.YearAdapter;
 import com.cappielloantonio.play.databinding.FragmentHomeBinding;
+import com.cappielloantonio.play.helper.recyclerview.CustomLinearSnapHelper;
 import com.cappielloantonio.play.model.Album;
 import com.cappielloantonio.play.model.Artist;
 import com.cappielloantonio.play.model.Song;
@@ -165,6 +168,9 @@ public class HomeFragment extends Fragment {
 
             mostPlayedAlbumAdapter.setItems(albums);
         });
+
+        CustomLinearSnapHelper mostPlayedAlbumSnapHelper = new CustomLinearSnapHelper();
+        mostPlayedAlbumSnapHelper.attachToRecyclerView(bind.mostPlayedAlbumsRecyclerView);
     }
 
     private void initRecentPlayedAlbumView() {
@@ -179,6 +185,9 @@ public class HomeFragment extends Fragment {
 
             recentlyPlayedAlbumAdapter.setItems(albums);
         });
+
+        CustomLinearSnapHelper recentPlayedAlbumSnapHelper = new CustomLinearSnapHelper();
+        recentPlayedAlbumSnapHelper.attachToRecyclerView(bind.recentlyPlayedAlbumsRecyclerView);
     }
 
     private void initYearSongView() {
@@ -199,6 +208,9 @@ public class HomeFragment extends Fragment {
 
             yearAdapter.setItems(years);
         });
+
+        CustomLinearSnapHelper yearSnapHelper = new CustomLinearSnapHelper();
+        yearSnapHelper.attachToRecyclerView(bind.yearsRecyclerView);
     }
 
     private void initStarredTracksView() {
@@ -214,8 +226,8 @@ public class HomeFragment extends Fragment {
             starredSongAdapter.setItems(songs);
         });
 
-        PagerSnapHelper pagerSnapHelper = new PagerSnapHelper();
+        SnapHelper starredTrackSnapHelper = new PagerSnapHelper();
-        pagerSnapHelper.attachToRecyclerView(bind.starredTracksRecyclerView);
+        starredTrackSnapHelper.attachToRecyclerView(bind.starredTracksRecyclerView);
     }
 
     private void initStarredAlbumsView() {
@@ -231,8 +243,8 @@ public class HomeFragment extends Fragment {
             starredAlbumAdapter.setItems(albums);
         });
 
-        PagerSnapHelper pagerSnapHelper = new PagerSnapHelper();
+        SnapHelper starredAlbumSnapHelper = new PagerSnapHelper();
-        pagerSnapHelper.attachToRecyclerView(bind.starredAlbumsRecyclerView);
+        starredAlbumSnapHelper.attachToRecyclerView(bind.starredAlbumsRecyclerView);
     }
 
     private void initStarredArtistsView() {
@@ -248,8 +260,8 @@ public class HomeFragment extends Fragment {
             starredArtistAdapter.setItems(artists);
         });
 
-        PagerSnapHelper pagerSnapHelper = new PagerSnapHelper();
+        SnapHelper starredArtistSnapHelper = new PagerSnapHelper();
-        pagerSnapHelper.attachToRecyclerView(bind.starredArtistsRecyclerView);
+        starredArtistSnapHelper.attachToRecyclerView(bind.starredArtistsRecyclerView);
     }
 
     private void initRecentAddedAlbumView() {
@@ -261,6 +273,9 @@ public class HomeFragment extends Fragment {
         homeViewModel.getMostRecentlyAddedAlbums().observe(requireActivity(), albums -> {
             recentlyAddedAlbumAdapter.setItems(albums);
         });
+
+        CustomLinearSnapHelper recentAddedAlbumSnapHelper = new CustomLinearSnapHelper();
+        recentAddedAlbumSnapHelper.attachToRecyclerView(bind.recentlyAddedAlbumsRecyclerView);
     }
 
     private void initDownloadedSongView() {
@@ -275,6 +290,9 @@ public class HomeFragment extends Fragment {
 
             dowanloadedMusicAdapter.setItems(MappingUtil.mapDownload(downloads));
         });
+
+        CustomLinearSnapHelper downloadedSongSnapHelper = new CustomLinearSnapHelper();
+        downloadedSongSnapHelper.attachToRecyclerView(bind.downloadedTracksRecyclerView);
     }
 
     private void setDiscoverSongSlideViewOffset(float pageOffset, float pageMargin) {

app/src/main/java/com/cappielloantonio/play/ui/fragment/LibraryFragment.java

@@ -20,6 +20,7 @@ import com.cappielloantonio.play.adapter.ArtistAdapter;
 import com.cappielloantonio.play.adapter.GenreAdapter;
 import com.cappielloantonio.play.adapter.PlaylistAdapter;
 import com.cappielloantonio.play.databinding.FragmentLibraryBinding;
+import com.cappielloantonio.play.helper.recyclerview.CustomLinearSnapHelper;
 import com.cappielloantonio.play.model.Song;
 import com.cappielloantonio.play.ui.activity.MainActivity;
 import com.cappielloantonio.play.viewmodel.LibraryViewModel;
@@ -90,6 +91,9 @@ public class LibraryFragment extends Fragment {
                 bind.libraryAlbumSector.setVisibility(!albums.isEmpty() ? View.VISIBLE : View.GONE);
             albumAdapter.setItems(albums);
         });
+
+        CustomLinearSnapHelper albumSnapHelper = new CustomLinearSnapHelper();
+        albumSnapHelper.attachToRecyclerView(bind.albumRecyclerView);
     }
 
     private void initArtistView() {
@@ -103,6 +107,9 @@ public class LibraryFragment extends Fragment {
                 bind.libraryArtistSector.setVisibility(!artists.isEmpty() ? View.VISIBLE : View.GONE);
             artistAdapter.setItems(artists);
         });
+
+        CustomLinearSnapHelper artistSnapHelper = new CustomLinearSnapHelper();
+        artistSnapHelper.attachToRecyclerView(bind.artistRecyclerView);
     }
 
     private void initGenreView() {
@@ -122,6 +129,9 @@ public class LibraryFragment extends Fragment {
                 bind.libraryGenresSector.setVisibility(!genres.isEmpty() ? View.VISIBLE : View.GONE);
             genreAdapter.setItems(genres);
         });
+
+        CustomLinearSnapHelper genreSnapHelper = new CustomLinearSnapHelper();
+        genreSnapHelper.attachToRecyclerView(bind.genreRecyclerView);
     }
 
     private void initPlaylistSlideView() {

app/src/main/java/com/cappielloantonio/play/ui/fragment/SearchFragment.java

@@ -16,6 +16,7 @@ import com.cappielloantonio.play.adapter.AlbumAdapter;
 import com.cappielloantonio.play.adapter.ArtistAdapter;
 import com.cappielloantonio.play.adapter.SongHorizontalAdapter;
 import com.cappielloantonio.play.databinding.FragmentSearchBinding;
+import com.cappielloantonio.play.helper.recyclerview.CustomLinearSnapHelper;
 import com.cappielloantonio.play.ui.activity.MainActivity;
 import com.cappielloantonio.play.util.MusicUtil;
 import com.cappielloantonio.play.viewmodel.SearchViewModel;
@@ -82,12 +83,18 @@ public class SearchFragment extends Fragment {
         albumAdapter = new AlbumAdapter(requireContext());
         bind.searchResultAlbumRecyclerView.setAdapter(albumAdapter);
 
+        CustomLinearSnapHelper albumSnapHelper = new CustomLinearSnapHelper();
+        albumSnapHelper.attachToRecyclerView(bind.searchResultAlbumRecyclerView);
+
         // Artists
         bind.searchResultArtistRecyclerView.setLayoutManager(new LinearLayoutManager(requireContext(), LinearLayoutManager.HORIZONTAL, false));
         bind.searchResultArtistRecyclerView.setHasFixedSize(true);
 
         artistAdapter = new ArtistAdapter(requireContext());
         bind.searchResultArtistRecyclerView.setAdapter(artistAdapter);
+
+        CustomLinearSnapHelper artistSnapHelper = new CustomLinearSnapHelper();
+        artistSnapHelper.attachToRecyclerView(bind.searchResultArtistRecyclerView);
     }
 
     private void initSearchView() {