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Code Issues Projects Releases Packages Wiki Activity Actions

The viewmodels have been modified to not repeat calls to the backend during the lifecycle of the fragment

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This commit is contained in:
antonio 2022-09-05 08:21:01 +02:00
parent 6817fa739e
commit 8b883c88fc
6 changed files with 87 additions and 46 deletions
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2
app/src/main/java/com/cappielloantonio/play/ui/dialog/PlaylistChooserDialog.java
View file

@ -82,7 +82,7 @@ public class PlaylistChooserDialog extends DialogFragment {
playlistDialogHorizontalAdapter = new PlaylistDialogHorizontalAdapter(requireContext(), playlistChooserViewModel, this);
bind.playlistDialogRecyclerView.setAdapter(playlistDialogHorizontalAdapter);
playlistChooserViewModel.getPlaylistList().observe(getViewLifecycleOwner(), playlists -> {
playlistChooserViewModel.getPlaylistList(getViewLifecycleOwner()).observe(getViewLifecycleOwner(), playlists -> {
if (playlists != null) {
if (playlists.size() > 0) {
if (bind != null) bind.noPlaylistsCreatedTextView.setVisibility(View.GONE);

6
app/src/main/java/com/cappielloantonio/play/ui/fragment/HomeFragment.java
View file

@ -256,7 +256,7 @@ public class HomeFragment extends Fragment {
discoverSongAdapter = new DiscoverSongAdapter(activity, requireContext());
bind.discoverSongViewPager.setAdapter(discoverSongAdapter);
bind.discoverSongViewPager.setOffscreenPageLimit(1);
homeViewModel.getDiscoverSongSample().observe(getViewLifecycleOwner(), songs -> {
homeViewModel.getDiscoverSongSample(getViewLifecycleOwner()).observe(getViewLifecycleOwner(), songs -> {
if (songs == null) {
if (bind != null) bind.homeDiscoveryPlaceholder.placeholder.setVisibility(View.VISIBLE);
if (bind != null) bind.homeDiscoverSector.setVisibility(View.GONE);
@ -277,7 +277,7 @@ public class HomeFragment extends Fragment {
similarMusicAdapter = new SimilarTrackAdapter(activity, requireContext());
bind.similarTracksRecyclerView.setAdapter(similarMusicAdapter);
homeViewModel.getStarredTracksSample().observe(getViewLifecycleOwner(), songs -> {
homeViewModel.getStarredTracksSample(getViewLifecycleOwner()).observe(getViewLifecycleOwner(), songs -> {
if (songs == null) {
if (bind != null) bind.homeSimilarTracksPlaceholder.placeholder.setVisibility(View.VISIBLE);
if (bind != null) bind.homeSimilarTracksSector.setVisibility(View.GONE);
@ -299,7 +299,7 @@ public class HomeFragment extends Fragment {
radioArtistAdapter = new ArtistAdapter((MainActivity) requireActivity(), requireContext());
bind.radioArtistRecyclerView.setAdapter(radioArtistAdapter);
homeViewModel.getStarredArtistsSample().observe(getViewLifecycleOwner(), artists -> {
homeViewModel.getStarredArtistsSample(getViewLifecycleOwner()).observe(getViewLifecycleOwner(), artists -> {
if (artists == null) {
if (bind != null) bind.homeRadioArtistPlaceholder.placeholder.setVisibility(View.VISIBLE);
if (bind != null) bind.homeRadioArtistSector.setVisibility(View.GONE);

8
app/src/main/java/com/cappielloantonio/play/ui/fragment/LibraryFragment.java
View file

@ -145,7 +145,7 @@ public class LibraryFragment extends Fragment {
albumAdapter = new AlbumAdapter(requireContext());
bind.albumRecyclerView.setAdapter(albumAdapter);
libraryViewModel.getAlbumSample().observe(getViewLifecycleOwner(), albums -> {
libraryViewModel.getAlbumSample(getViewLifecycleOwner()).observe(getViewLifecycleOwner(), albums -> {
if (albums == null) {
if (bind != null) bind.libraryAlbumPlaceholder.placeholder.setVisibility(View.VISIBLE);
if (bind != null) bind.libraryAlbumSector.setVisibility(View.GONE);
@ -167,7 +167,7 @@ public class LibraryFragment extends Fragment {
artistAdapter = new ArtistAdapter((MainActivity) requireActivity(), requireContext());
bind.artistRecyclerView.setAdapter(artistAdapter);
libraryViewModel.getArtistSample().observe(getViewLifecycleOwner(), artists -> {
libraryViewModel.getArtistSample(getViewLifecycleOwner()).observe(getViewLifecycleOwner(), artists -> {
if (artists == null) {
if (bind != null) bind.libraryArtistPlaceholder.placeholder.setVisibility(View.VISIBLE);
if (bind != null) bind.libraryArtistSector.setVisibility(View.GONE);
@ -195,7 +195,7 @@ public class LibraryFragment extends Fragment {
activity.navController.navigate(R.id.action_libraryFragment_to_songListPageFragment, bundle);
});
bind.genreRecyclerView.setAdapter(genreAdapter);
libraryViewModel.getGenreSample().observe(getViewLifecycleOwner(), genres -> {
libraryViewModel.getGenreSample(getViewLifecycleOwner()).observe(getViewLifecycleOwner(), genres -> {
if (genres == null) {
if (bind != null) bind.libraryGenrePlaceholder.placeholder.setVisibility(View.VISIBLE);
if (bind != null) bind.libraryGenresSector.setVisibility(View.GONE);
@ -217,7 +217,7 @@ public class LibraryFragment extends Fragment {
playlistHorizontalAdapter = new PlaylistHorizontalAdapter(activity, requireContext());
bind.playlistRecyclerView.setAdapter(playlistHorizontalAdapter);
libraryViewModel.getPlaylistSample().observe(getViewLifecycleOwner(), playlists -> {
libraryViewModel.getPlaylistSample(getViewLifecycleOwner()).observe(getViewLifecycleOwner(), playlists -> {
if (playlists == null) {
if (bind != null) bind.libraryPlaylistPlaceholder.placeholder.setVisibility(View.VISIBLE);
if (bind != null) bind.libraryPlaylistSector.setVisibility(View.GONE);

75
app/src/main/java/com/cappielloantonio/play/viewmodel/HomeViewModel.java
View file

@ -56,67 +56,98 @@ public class HomeViewModel extends AndroidViewModel {
artistRepository = new ArtistRepository(application);
playlistRepository = new PlaylistRepository(application);
podcastRepository = new PodcastRepository(application);
songRepository.getRandomSample(10, null, null).observeForever(dicoverSongSample::postValue);
songRepository.getStarredSongs(true, 10).observeForever(starredTracksSample::postValue);
artistRepository.getStarredArtists(true, 10).observeForever(starredArtistsSample::postValue);
}
public LiveData<List<Media>> getDiscoverSongSample() {
public LiveData<List<Media>> getDiscoverSongSample(LifecycleOwner owner) {
if (dicoverSongSample.getValue() == null) {
songRepository.getRandomSample(10, null, null).observe(owner, dicoverSongSample::postValue);
}
return dicoverSongSample;
}
public LiveData<List<Album>> getRecentlyReleasedAlbums(LifecycleOwner owner) {
int currentYear = Calendar.getInstance().get(Calendar.YEAR);
if (newReleasedAlbum.getValue() == null) {
int currentYear = Calendar.getInstance().get(Calendar.YEAR);
albumRepository.getAlbums("byYear", 500, currentYear, currentYear).observe(owner, albums -> {
albums.sort(Comparator.comparing(Album::getCreated).reversed());
newReleasedAlbum.postValue(albums.subList(0, Math.min(20, albums.size())));
});
albumRepository.getAlbums("byYear", 500, currentYear, currentYear).observe(owner, albums -> {
albums.sort(Comparator.comparing(Album::getCreated).reversed());
newReleasedAlbum.postValue(albums.subList(0, Math.min(20, albums.size())));
});
}
return newReleasedAlbum;
}
public LiveData<List<Media>> getStarredTracksSample() {
public LiveData<List<Media>> getStarredTracksSample(LifecycleOwner owner) {
if (starredTracksSample.getValue() == null) {
songRepository.getStarredSongs(true, 10).observe(owner, starredTracksSample::postValue);
}
return starredTracksSample;
}
public LiveData<List<Artist>> getStarredArtistsSample() {
public LiveData<List<Artist>> getStarredArtistsSample(LifecycleOwner owner) {
if (starredArtistsSample.getValue() == null) {
artistRepository.getStarredArtists(true, 10).observe(owner, starredArtistsSample::postValue);
}
return starredArtistsSample;
}
public LiveData<List<Media>> getStarredTracks(LifecycleOwner owner) {
songRepository.getStarredSongs(true, 20).observe(owner, starredTracks::postValue);
if (starredTracks.getValue() == null) {
songRepository.getStarredSongs(true, 20).observe(owner, starredTracks::postValue);
}
return starredTracks;
}
public LiveData<List<Album>> getStarredAlbums(LifecycleOwner owner) {
albumRepository.getStarredAlbums(true, 20).observe(owner, starredAlbums::postValue);
if (starredAlbums.getValue() == null) {
albumRepository.getStarredAlbums(true, 20).observe(owner, starredAlbums::postValue);
}
return starredAlbums;
}
public LiveData<List<Artist>> getStarredArtists(LifecycleOwner owner) {
artistRepository.getStarredArtists(true, 20).observe(owner, starredArtists::postValue);
if (starredArtists.getValue() == null) {
artistRepository.getStarredArtists(true, 20).observe(owner, starredArtists::postValue);
}
return starredArtists;
}
public LiveData<List<Integer>> getYearList(LifecycleOwner owner) {
albumRepository.getDecades().observe(owner, years::postValue);
if (years.getValue() == null) {
albumRepository.getDecades().observe(owner, years::postValue);
}
return years;
}
public LiveData<List<Album>> getMostPlayedAlbums(LifecycleOwner owner) {
albumRepository.getAlbums("frequent", 20, null, null).observe(owner, mostPlayedAlbumSample::postValue);
if (mostPlayedAlbumSample.getValue() == null) {
albumRepository.getAlbums("frequent", 20, null, null).observe(owner, mostPlayedAlbumSample::postValue);
}
return mostPlayedAlbumSample;
}
public LiveData<List<Album>> getMostRecentlyAddedAlbums(LifecycleOwner owner) {
albumRepository.getAlbums("newest", 20, null, null).observe(owner, recentlyAddedAlbumSample::postValue);
if (recentlyAddedAlbumSample.getValue() == null) {
albumRepository.getAlbums("newest", 20, null, null).observe(owner, recentlyAddedAlbumSample::postValue);
}
return recentlyAddedAlbumSample;
}
public LiveData<List<Album>> getRecentlyPlayedAlbumList(LifecycleOwner owner) {
albumRepository.getAlbums("recent", 20, null, null).observe(owner, recentlyPlayedAlbumSample::postValue);
if (recentlyPlayedAlbumSample.getValue() == null) {
albumRepository.getAlbums("recent", 20, null, null).observe(owner, recentlyPlayedAlbumSample::postValue);
}
return recentlyPlayedAlbumSample;
}
@ -126,6 +157,7 @@ public class HomeViewModel extends AndroidViewModel {
List<Playlist> subPlaylist = playlists.subList(0, Math.min(maxNumber, playlists.size()));
pinnedPlaylists.postValue(subPlaylist);
});
return pinnedPlaylists;
}
@ -134,7 +166,10 @@ public class HomeViewModel extends AndroidViewModel {
}
public LiveData<List<Media>> getNewestPodcastEpisodes(LifecycleOwner owner) {
podcastRepository.getNewestPodcastEpisodes(20).observe(owner, newestPodcastEpisodes::postValue);
if (newestPodcastEpisodes.getValue() == null) {
podcastRepository.getNewestPodcastEpisodes(20).observe(owner, newestPodcastEpisodes::postValue);
}
return newestPodcastEpisodes;
}

33
app/src/main/java/com/cappielloantonio/play/viewmodel/LibraryViewModel.java
View file

@ -17,8 +17,6 @@ import com.cappielloantonio.play.repository.ArtistRepository;
import com.cappielloantonio.play.repository.GenreRepository;
import com.cappielloantonio.play.repository.PlaylistRepository;
import java.util.Calendar;
import java.util.Comparator;
import java.util.List;
public class LibraryViewModel extends AndroidViewModel {
@ -41,28 +39,37 @@ public class LibraryViewModel extends AndroidViewModel {
artistRepository = new ArtistRepository(application);
genreRepository = new GenreRepository(application);
playlistRepository = new PlaylistRepository(application);
// Inizializzate all'interno del costruttore, in modo da rimanere immutabili per tutto il
// ciclo di vita dell'applicazione
albumRepository.getAlbums("random", 10, null, null).observeForever(sampleAlbum::postValue);
artistRepository.getArtists(true, 10).observeForever(sampleArtist::postValue);
genreRepository.getGenres(true, 15).observeForever(sampleGenres::postValue);
playlistRepository.getPlaylists(true, 10).observeForever(playlistSample::postValue);
}
public LiveData<List<Album>> getAlbumSample() {
public LiveData<List<Album>> getAlbumSample(LifecycleOwner owner) {
if (sampleAlbum.getValue() == null) {
albumRepository.getAlbums("random", 10, null, null).observe(owner, sampleAlbum::postValue);
}
return sampleAlbum;
}
public LiveData<List<Artist>> getArtistSample() {
public LiveData<List<Artist>> getArtistSample(LifecycleOwner owner) {
if (sampleArtist.getValue() == null) {
artistRepository.getArtists(true, 10).observe(owner, sampleArtist::postValue);
}
return sampleArtist;
}
public LiveData<List<Genre>> getGenreSample() {
public LiveData<List<Genre>> getGenreSample(LifecycleOwner owner) {
if (sampleGenres.getValue() == null) {
genreRepository.getGenres(true, 15).observe(owner, sampleGenres::postValue);
}
return sampleGenres;
}
public LiveData<List<Playlist>> getPlaylistSample() {
public LiveData<List<Playlist>> getPlaylistSample(LifecycleOwner owner) {
if (playlistSample.getValue() == null) {
playlistRepository.getPlaylists(true, 10).observe(owner, playlistSample::postValue);
}
return playlistSample;
}

9
app/src/main/java/com/cappielloantonio/play/viewmodel/PlaylistChooserViewModel.java
View file

@ -4,11 +4,12 @@ import android.app.Application;
import androidx.annotation.NonNull;
import androidx.lifecycle.AndroidViewModel;
import androidx.lifecycle.LifecycleOwner;
import androidx.lifecycle.LiveData;
import androidx.lifecycle.MutableLiveData;
import com.cappielloantonio.play.model.Playlist;
import com.cappielloantonio.play.model.Media;
import com.cappielloantonio.play.model.Playlist;
import com.cappielloantonio.play.repository.PlaylistRepository;
import java.util.ArrayList;
@ -25,12 +26,10 @@ public class PlaylistChooserViewModel extends AndroidViewModel {
super(application);
playlistRepository = new PlaylistRepository(application);
playlistRepository.getPlaylists(false, -1).observeForever(playlists::postValue);
}
public LiveData<List<Playlist>> getPlaylistList() {
public LiveData<List<Playlist>> getPlaylistList(LifecycleOwner owner) {
playlistRepository.getPlaylists(false, -1).observe(owner, playlists::postValue);
return playlists;
}