java/com/android/pump/activity/PlaylistDetailsActivity.java - platform/packages/apps/UniversalMediaPlayer - Git at Google

 /*
  * Copyright 2018 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.pump.activity;

 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.TextView;

 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
 import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.recyclerview.widget.RecyclerView;

 import com.android.pump.R;
 import com.android.pump.db.Album;
 import com.android.pump.db.Artist;
 import com.android.pump.db.Audio;
 import com.android.pump.db.MediaDb;
 import com.android.pump.db.Playlist;
 import com.android.pump.util.Globals;

 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Set;

 @UiThread
 public class PlaylistDetailsActivity extends AppCompatActivity implements MediaDb.UpdateCallback {
     private MediaDb mMediaDb;
     private Playlist mPlaylist;

     public static void start(@NonNull Context context, @NonNull Playlist playlist) {
         Intent intent = new Intent(context, PlaylistDetailsActivity.class);
         // TODO(b/123704452) Pass URI instead
         intent.putExtra("id", playlist.getId()); // TODO Add constant key
         context.startActivity(intent);
     }

     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_playlist_details);

         setSupportActionBar(findViewById(R.id.activity_playlist_details_toolbar));
         ActionBar actionBar = getSupportActionBar();
         if (actionBar != null) {
             actionBar.setDisplayShowTitleEnabled(false);
             actionBar.setDisplayShowHomeEnabled(true);
             actionBar.setDisplayHomeAsUpEnabled(true);
         }

         mMediaDb = Globals.getMediaDb(this);
         mMediaDb.addPlaylistUpdateCallback(this);

         handleIntent();
     }

     @Override
     protected void onNewIntent(@Nullable Intent intent) {
         super.onNewIntent(intent);
         setIntent(intent);

         handleIntent();
     }

     @Override
     protected void onDestroy() {
         mMediaDb.removePlaylistUpdateCallback(this);

         super.onDestroy();
     }

     @Override
     public boolean onCreateOptionsMenu(@NonNull Menu menu) {
         getMenuInflater().inflate(R.menu.activity_pump, menu); // TODO activity_playlist_details ?
         return true;
     }

     @Override
     public boolean onSupportNavigateUp() {
         // TODO It should not be necessary to override this method
         onBackPressed();
         return true;
     }

     @Override
     public void onItemsInserted(int index, int count) { }

     @Override
     public void onItemsUpdated(int index, int count) {
         for (int i = index; i < index + count; ++i) {
             Playlist playlist = mMediaDb.getPlaylists().get(i);
             if (playlist.equals(mPlaylist)) {
                 updateViews();
                 break;
             }
         }
     }

     @Override
     public void onItemsRemoved(int index, int count) { }

     private void handleIntent() {
         Intent intent = getIntent();
         Bundle extras = intent != null ? intent.getExtras() : null;
         if (extras != null) {
             long id = extras.getLong("id");

             mPlaylist = mMediaDb.getPlaylistById(id);
         } else {
             mPlaylist = null;
             // TODO This shouldn't happen -- throw exception?
         }

         mMediaDb.loadData(mPlaylist);
         updateViews();
     }

     private void updateViews() {
         ImageView image0View = findViewById(R.id.activity_playlist_details_image_0);
         ImageView image1View = findViewById(R.id.activity_playlist_details_image_1);
         ImageView image2View = findViewById(R.id.activity_playlist_details_image_2);
         ImageView image3View = findViewById(R.id.activity_playlist_details_image_3);
         TextView nameView = findViewById(R.id.activity_playlist_details_name);
         TextView countView = findViewById(R.id.activity_playlist_details_count);

         // TODO Find a better way to handle 2x2 art
         Set<Uri> albumArtUris = new HashSet<>();
         List<Audio> audios = mPlaylist.getAudios();
         for (Audio audio : audios) {
             Album album = audio.getAlbum();
             if (album != null && album.getAlbumArtUri() != null) {
                 albumArtUris.add(album.getAlbumArtUri());
             }
         }

         int numAlbumArt = albumArtUris.size();
         if (numAlbumArt == 0) {
             image0View.setImageURI(null);
             image1View.setImageURI(null);
             image2View.setImageURI(null);
             image3View.setImageURI(null);
             image0View.setVisibility(View.VISIBLE);
             image1View.setVisibility(View.GONE);
             image2View.setVisibility(View.GONE);
             image3View.setVisibility(View.GONE);
         } else if (numAlbumArt < 4) {
             Iterator<Uri> iterator = albumArtUris.iterator();
             image0View.setImageURI(iterator.next());
             image1View.setImageURI(null);
             image2View.setImageURI(null);
             image3View.setImageURI(null);
             image0View.setVisibility(View.VISIBLE);
             image1View.setVisibility(View.GONE);
             image2View.setVisibility(View.GONE);
             image3View.setVisibility(View.GONE);
         } else {
             Iterator<Uri> iterator = albumArtUris.iterator();
             image0View.setImageURI(iterator.next());
             image1View.setImageURI(iterator.next());
             image2View.setImageURI(iterator.next());
             image3View.setImageURI(iterator.next());
             image0View.setVisibility(View.VISIBLE);
             image1View.setVisibility(View.VISIBLE);
             image2View.setVisibility(View.VISIBLE);
             image3View.setVisibility(View.VISIBLE);
         }
         nameView.setText(mPlaylist.getName());
         // TODO(b/123037263) I18n -- Move to resource
         countView.setText(mPlaylist.getAudios().size() + " songs");

         ImageView playView = findViewById(R.id.activity_playlist_details_play);
         playView.setOnClickListener((view) ->
                 AudioPlayerActivity.start(view.getContext(), mPlaylist));

         RecyclerView recyclerView = findViewById(R.id.activity_playlist_details_recycler_view);
         recyclerView.setHasFixedSize(true);
         recyclerView.setAdapter(new PlaylistAdapter(mMediaDb, mPlaylist));

         // TODO(b/123707260) Enable view caching
         //recyclerView.setItemViewCacheSize(0);
         //recyclerView.setRecycledViewPool(Globals.getRecycledViewPool(requireContext()));
     }

     private static class PlaylistAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
         private final MediaDb mMediaDb;
         private final Playlist mPlaylist;

         private PlaylistAdapter(@NonNull MediaDb mediaDb, @NonNull Playlist playlist) {
             setHasStableIds(true);
             mMediaDb = mediaDb;
             mPlaylist = playlist;
         }

         @Override
         public @NonNull RecyclerView.ViewHolder onCreateViewHolder(
                 @NonNull ViewGroup parent, int viewType) {
             return new AudioViewHolder(LayoutInflater.from(parent.getContext())
                     .inflate(viewType, parent, false));
         }

         @Override
         public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
             Audio audio = mPlaylist.getAudios().get(position);
             mMediaDb.loadData(audio); // TODO Where should we call this? In bind()?
             ((AudioViewHolder) holder).bind(mPlaylist, audio);
         }

         @Override
         public int getItemCount() {
             return mPlaylist.getAudios().size();
         }

         @Override
         public long getItemId(int position) {
             return mPlaylist.getAudios().get(position).getId();
         }

         @Override
         public int getItemViewType(int position) {
             return R.layout.audio;
         }
     }

     private static class AudioViewHolder extends RecyclerView.ViewHolder {
         private AudioViewHolder(@NonNull View itemView) {
             super(itemView);
         }

         private void bind(@NonNull Playlist playlist, @NonNull Audio audio) {
             ImageView imageView = itemView.findViewById(R.id.audio_image);
             TextView titleView = itemView.findViewById(R.id.audio_title);
             TextView artistView = itemView.findViewById(R.id.audio_artist);

             Album album = audio.getAlbum();
             imageView.setImageURI(album == null ? null : album.getAlbumArtUri());
             titleView.setText(audio.getTitle());
             Artist artist = audio.getArtist();
             artistView.setText(artist == null ? null : artist.getName());

             itemView.setOnClickListener((view) ->
                     AudioPlayerActivity.start(view.getContext(), playlist, getAdapterPosition()));
         }
     }
 }
	/*
	* Copyright 2018 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.pump.activity;

	import android.content.Context;
	import android.content.Intent;
	import android.net.Uri;
	import android.os.Bundle;
	import android.view.LayoutInflater;
	import android.view.Menu;
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.ImageView;
	import android.widget.TextView;

	import androidx.annotation.NonNull;
	import androidx.annotation.Nullable;
	import androidx.annotation.UiThread;
	import androidx.appcompat.app.ActionBar;
	import androidx.appcompat.app.AppCompatActivity;
	import androidx.recyclerview.widget.RecyclerView;

	import com.android.pump.R;
	import com.android.pump.db.Album;
	import com.android.pump.db.Artist;
	import com.android.pump.db.Audio;
	import com.android.pump.db.MediaDb;
	import com.android.pump.db.Playlist;
	import com.android.pump.util.Globals;

	import java.util.HashSet;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Set;

	@UiThread
	public class PlaylistDetailsActivity extends AppCompatActivity implements MediaDb.UpdateCallback {
	private MediaDb mMediaDb;
	private Playlist mPlaylist;

	public static void start(@NonNull Context context, @NonNull Playlist playlist) {
	Intent intent = new Intent(context, PlaylistDetailsActivity.class);
	// TODO(b/123704452) Pass URI instead
	intent.putExtra("id", playlist.getId()); // TODO Add constant key
	context.startActivity(intent);
	}

	@Override
	protected void onCreate(@Nullable Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_playlist_details);

	setSupportActionBar(findViewById(R.id.activity_playlist_details_toolbar));
	ActionBar actionBar = getSupportActionBar();
	if (actionBar != null) {
	actionBar.setDisplayShowTitleEnabled(false);
	actionBar.setDisplayShowHomeEnabled(true);
	actionBar.setDisplayHomeAsUpEnabled(true);
	}

	mMediaDb = Globals.getMediaDb(this);
	mMediaDb.addPlaylistUpdateCallback(this);

	handleIntent();
	}

	@Override
	protected void onNewIntent(@Nullable Intent intent) {
	super.onNewIntent(intent);
	setIntent(intent);

	handleIntent();
	}

	@Override
	protected void onDestroy() {
	mMediaDb.removePlaylistUpdateCallback(this);

	super.onDestroy();
	}

	@Override
	public boolean onCreateOptionsMenu(@NonNull Menu menu) {
	getMenuInflater().inflate(R.menu.activity_pump, menu); // TODO activity_playlist_details ?
	return true;
	}

	@Override
	public boolean onSupportNavigateUp() {
	// TODO It should not be necessary to override this method
	onBackPressed();
	return true;
	}

	@Override
	public void onItemsInserted(int index, int count) { }

	@Override
	public void onItemsUpdated(int index, int count) {
	for (int i = index; i < index + count; ++i) {
	Playlist playlist = mMediaDb.getPlaylists().get(i);
	if (playlist.equals(mPlaylist)) {
	updateViews();
	break;
	}
	}
	}

	@Override
	public void onItemsRemoved(int index, int count) { }

	private void handleIntent() {
	Intent intent = getIntent();
	Bundle extras = intent != null ? intent.getExtras() : null;
	if (extras != null) {
	long id = extras.getLong("id");

	mPlaylist = mMediaDb.getPlaylistById(id);
	} else {
	mPlaylist = null;
	// TODO This shouldn't happen -- throw exception?
	}

	mMediaDb.loadData(mPlaylist);
	updateViews();
	}

	private void updateViews() {
	ImageView image0View = findViewById(R.id.activity_playlist_details_image_0);
	ImageView image1View = findViewById(R.id.activity_playlist_details_image_1);
	ImageView image2View = findViewById(R.id.activity_playlist_details_image_2);
	ImageView image3View = findViewById(R.id.activity_playlist_details_image_3);
	TextView nameView = findViewById(R.id.activity_playlist_details_name);
	TextView countView = findViewById(R.id.activity_playlist_details_count);

	// TODO Find a better way to handle 2x2 art
	Set<Uri> albumArtUris = new HashSet<>();
	List<Audio> audios = mPlaylist.getAudios();
	for (Audio audio : audios) {
	Album album = audio.getAlbum();
	if (album != null && album.getAlbumArtUri() != null) {
	albumArtUris.add(album.getAlbumArtUri());
	}
	}

	int numAlbumArt = albumArtUris.size();
	if (numAlbumArt == 0) {
	image0View.setImageURI(null);
	image1View.setImageURI(null);
	image2View.setImageURI(null);
	image3View.setImageURI(null);
	image0View.setVisibility(View.VISIBLE);
	image1View.setVisibility(View.GONE);
	image2View.setVisibility(View.GONE);
	image3View.setVisibility(View.GONE);
	} else if (numAlbumArt < 4) {
	Iterator<Uri> iterator = albumArtUris.iterator();
	image0View.setImageURI(iterator.next());
	image1View.setImageURI(null);
	image2View.setImageURI(null);
	image3View.setImageURI(null);
	image0View.setVisibility(View.VISIBLE);
	image1View.setVisibility(View.GONE);
	image2View.setVisibility(View.GONE);
	image3View.setVisibility(View.GONE);
	} else {
	Iterator<Uri> iterator = albumArtUris.iterator();
	image0View.setImageURI(iterator.next());
	image1View.setImageURI(iterator.next());
	image2View.setImageURI(iterator.next());
	image3View.setImageURI(iterator.next());
	image0View.setVisibility(View.VISIBLE);
	image1View.setVisibility(View.VISIBLE);
	image2View.setVisibility(View.VISIBLE);
	image3View.setVisibility(View.VISIBLE);
	}
	nameView.setText(mPlaylist.getName());
	// TODO(b/123037263) I18n -- Move to resource
	countView.setText(mPlaylist.getAudios().size() + " songs");

	ImageView playView = findViewById(R.id.activity_playlist_details_play);
	playView.setOnClickListener((view) ->
	AudioPlayerActivity.start(view.getContext(), mPlaylist));

	RecyclerView recyclerView = findViewById(R.id.activity_playlist_details_recycler_view);
	recyclerView.setHasFixedSize(true);
	recyclerView.setAdapter(new PlaylistAdapter(mMediaDb, mPlaylist));

	// TODO(b/123707260) Enable view caching
	//recyclerView.setItemViewCacheSize(0);
	//recyclerView.setRecycledViewPool(Globals.getRecycledViewPool(requireContext()));
	}

	private static class PlaylistAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
	private final MediaDb mMediaDb;
	private final Playlist mPlaylist;

	private PlaylistAdapter(@NonNull MediaDb mediaDb, @NonNull Playlist playlist) {
	setHasStableIds(true);
	mMediaDb = mediaDb;
	mPlaylist = playlist;
	}

	@Override
	public @NonNull RecyclerView.ViewHolder onCreateViewHolder(
	@NonNull ViewGroup parent, int viewType) {
	return new AudioViewHolder(LayoutInflater.from(parent.getContext())
	.inflate(viewType, parent, false));
	}

	@Override
	public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
	Audio audio = mPlaylist.getAudios().get(position);
	mMediaDb.loadData(audio); // TODO Where should we call this? In bind()?
	((AudioViewHolder) holder).bind(mPlaylist, audio);
	}

	@Override
	public int getItemCount() {
	return mPlaylist.getAudios().size();
	}

	@Override
	public long getItemId(int position) {
	return mPlaylist.getAudios().get(position).getId();
	}

	@Override
	public int getItemViewType(int position) {
	return R.layout.audio;
	}
	}

	private static class AudioViewHolder extends RecyclerView.ViewHolder {
	private AudioViewHolder(@NonNull View itemView) {
	super(itemView);
	}

	private void bind(@NonNull Playlist playlist, @NonNull Audio audio) {
	ImageView imageView = itemView.findViewById(R.id.audio_image);
	TextView titleView = itemView.findViewById(R.id.audio_title);
	TextView artistView = itemView.findViewById(R.id.audio_artist);

	Album album = audio.getAlbum();
	imageView.setImageURI(album == null ? null : album.getAlbumArtUri());
	titleView.setText(audio.getTitle());
	Artist artist = audio.getArtist();
	artistView.setText(artist == null ? null : artist.getName());

	itemView.setOnClickListener((view) ->
	AudioPlayerActivity.start(view.getContext(), playlist, getAdapterPosition()));
	}
	}
	}