/
MusicPlayerAlbumDemoFragment.java
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/
MusicPlayerAlbumDemoFragment.java
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/*
* Copyright 2021 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
*
* https://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 io.material.catalog.musicplayer;
import io.material.catalog.R;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import androidx.recyclerview.widget.ListAdapter;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.appcompat.widget.Toolbar;
import android.view.LayoutInflater;
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.core.view.ViewCompat;
import androidx.transition.TransitionManager;
import com.google.android.material.appbar.AppBarLayout;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.android.material.transition.MaterialArcMotion;
import com.google.android.material.transition.MaterialContainerTransform;
import dagger.android.support.DaggerFragment;
import io.material.catalog.musicplayer.MusicData.Album;
import io.material.catalog.musicplayer.MusicData.Track;
/** A Fragment that displays an album's details. */
public class MusicPlayerAlbumDemoFragment extends DaggerFragment {
public static final String TAG = "MusicPlayerAlbumDemoFragment";
private static final String ALBUM_ID_KEY = "album_id_key";
public static MusicPlayerAlbumDemoFragment newInstance(long albumId) {
MusicPlayerAlbumDemoFragment fragment = new MusicPlayerAlbumDemoFragment();
Bundle bundle = new Bundle();
bundle.putLong(ALBUM_ID_KEY, albumId);
fragment.setArguments(bundle);
return fragment;
}
@Nullable
@Override
public View onCreateView(
@NonNull LayoutInflater layoutInflater,
@Nullable ViewGroup viewGroup,
@Nullable Bundle bundle) {
return layoutInflater.inflate(R.layout.cat_music_player_album_fragment, viewGroup, false);
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle bundle) {
ViewGroup container = view.findViewById(R.id.container);
Toolbar toolbar = view.findViewById(R.id.toolbar);
ImageView albumImage = view.findViewById(R.id.album_image);
TextView albumTitle = view.findViewById(R.id.album_title);
TextView albumArtist = view.findViewById(R.id.album_artist);
RecyclerView songRecyclerView = view.findViewById(R.id.song_recycler_view);
setUpAlbumViews(container, toolbar, albumImage, albumTitle, albumArtist, songRecyclerView);
AppBarLayout appBarLayout = view.findViewById(R.id.app_bar_layout);
FloatingActionButton fab = view.findViewById(R.id.fab);
View musicPlayerContainer = view.findViewById(R.id.music_player_container);
appBarLayout.addOnOffsetChangedListener(
(appBarLayout1, verticalOffset) -> {
float verticalOffsetPercentage =
(float) Math.abs(verticalOffset) / (float) appBarLayout1.getTotalScrollRange();
if (verticalOffsetPercentage > 0.2F && fab.isOrWillBeShown()) {
fab.hide();
} else if (verticalOffsetPercentage <= 0.2F
&& fab.isOrWillBeHidden()
&& musicPlayerContainer.getVisibility() != View.VISIBLE) {
fab.show();
}
});
// Set up music player transitions
Context context = requireContext();
MaterialContainerTransform musicPlayerEnterTransform =
createMusicPlayerTransform(context, /* entering= */ true, fab, musicPlayerContainer);
fab.setOnClickListener(
v -> {
TransitionManager.beginDelayedTransition(container, musicPlayerEnterTransform);
fab.setVisibility(View.GONE);
musicPlayerContainer.setVisibility(View.VISIBLE);
});
MaterialContainerTransform musicPlayerExitTransform =
createMusicPlayerTransform(context, /* entering= */ false, musicPlayerContainer, fab);
musicPlayerContainer.setOnClickListener(
v -> {
TransitionManager.beginDelayedTransition(container, musicPlayerExitTransform);
musicPlayerContainer.setVisibility(View.GONE);
fab.setVisibility(View.VISIBLE);
});
}
protected void setUpAlbumViews(
@NonNull ViewGroup container,
@NonNull Toolbar toolbar,
@NonNull ImageView albumImage,
@NonNull TextView albumTitle,
@NonNull TextView albumArtist,
@NonNull RecyclerView songRecyclerView) {
long albumId = getArguments().getLong(ALBUM_ID_KEY, 0L);
Album album = MusicData.getAlbumById(albumId);
// Set the transition name which matches the list/grid item to be transitioned from for
// the shared element transition.
ViewCompat.setTransitionName(container, album.title);
// Set up toolbar
ViewCompat.setElevation(toolbar, 0F);
toolbar.setNavigationOnClickListener(v -> getActivity().onBackPressed());
// Set up album info area
albumImage.setImageResource(album.cover);
albumTitle.setText(album.title);
albumArtist.setText(album.artist);
// Set up track list
songRecyclerView.setLayoutManager(new LinearLayoutManager(requireContext()));
TrackAdapter adapter = new TrackAdapter();
songRecyclerView.setAdapter(adapter);
adapter.submitList(album.tracks);
}
private static MaterialContainerTransform createMusicPlayerTransform(
Context context, boolean entering, View startView, View endView) {
MaterialContainerTransform musicPlayerTransform =
new MaterialContainerTransform(context, entering);
musicPlayerTransform.setPathMotion(new MaterialArcMotion());
musicPlayerTransform.setScrimColor(Color.TRANSPARENT);
musicPlayerTransform.setStartView(startView);
musicPlayerTransform.setEndView(endView);
musicPlayerTransform.addTarget(endView);
return musicPlayerTransform;
}
/** An adapter to hold an albums list of tracks. */
class TrackAdapter extends ListAdapter<Track, TrackAdapter.TrackViewHolder> {
TrackAdapter() {
super(Track.DIFF_CALLBACK);
}
@NonNull
@Override
public TrackViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
return new TrackViewHolder(
LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.cat_music_player_track_list_item, viewGroup, false));
}
@Override
public void onBindViewHolder(@NonNull TrackViewHolder trackViewHolder, int i) {
trackViewHolder.bind(getItem(i));
}
/** A ViewHolder for a single track item. */
class TrackViewHolder extends RecyclerView.ViewHolder {
private final ImageView playingIcon;
private final TextView trackNumber;
private final TextView trackTitle;
private final TextView trackDuration;
TrackViewHolder(View view) {
super(view);
playingIcon = view.findViewById(R.id.playing_icon);
trackNumber = view.findViewById(R.id.track_number);
trackTitle = view.findViewById(R.id.track_title);
trackDuration = view.findViewById(R.id.track_duration);
}
public void bind(Track track) {
playingIcon.setVisibility(track.playing ? View.VISIBLE : View.INVISIBLE);
trackNumber.setText(String.valueOf(track.track));
trackTitle.setText(track.title);
trackDuration.setText(track.duration);
}
}
}
}