あなたはあなたが持っている、あなたがトラックを再生することができるしている場合は、あなたがSpotifyPlayer参照を持って動作しているようだと言うのチュートリアルを、従った場合。そのgetPlayerメソッドはあなたにそれを与えます。
SpotifyPlayerはUIコンポーネントではありません。そのプレイヤー（https://spotify.github.io/android-sdk/player/）を取得したら、独自のUIを作成し、プレーヤーのアクション（メソッド）やイベントにボタンなどを接続します。
public class PlayerActivity extends BaseActivity {
private ImageView buttonPlayPause;
private TextView labelNowPlaying;
private RecyclerView trackListRecyclerView;
private TrackListAdapter trackListAdapter;
private RecyclerView.LayoutManager trackListLayoutManager;
private Player spotifyPlayer;
private ConnectionStateCallback spotifyConnectionStateCallback;
private Player.NotificationCallback spotifyPlayerNotificationCallback;
private Player.OperationCallback spotifyPlayerOperationCallback;
private String spotifyAccessToken;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_player);
buttonPlayPause = (ImageView) findViewById(R.id.button_play_pause);
labelNowPlaying = (TextView) findViewById(R.id.label_now_playing);
buttonPlayPause.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// toggle spot pause/play
if (spotifyPlayer == null) {
Toast.makeText(PlayerActivity.this, "Spotify player not ready", Toast.LENGTH_SHORT).show();
} else {
// SpotifyPlayer provides init and connect methods; direct controls (play uri, pause, seek, skip, resume); and state (metadata and playbackstate)
PlaybackState playbackState = spotifyPlayer.getPlaybackState();
Log.d(Constants.TAG, "playPause click, playbackState:" + playbackState);
Metadata metadata = spotifyPlayer.getMetadata();
if (!playbackState.isPlaying && playbackState.positionMs == 0) {
// nothing has been started yet play track 1
Track track = trackListAdapter.getFirstTrack();
labelNowPlaying.setText(track.getName());
spotifyPlayer.playUri(null, track.getUri(), 0, 0);
return;
}
if (playbackState.isPlaying) {
spotifyPlayer.pause(spotifyPlayerOperationCallback);
return;
}
if (!playbackState.isPlaying && playbackState.positionMs > 0) {
// TODO how to tell if player is paused, idPlaying false and just position != 0? or is there an actual pause state, weird?
spotifyPlayer.resume(spotifyPlayerOperationCallback);
return;
}
// get here it's weird
Log.d(Constants.TAG, "error unexepected playback state:" + playbackState);
Toast.makeText(PlayerActivity.this, "Spotify playback state weird:" + playbackState, Toast.LENGTH_LONG).show();
}
}
});
spotifyPlayerNotificationCallback = new Player.NotificationCallback() {
@Override
public void onPlaybackEvent(PlayerEvent playerEvent) {
Log.d(Constants.TAG, "Spotify player notif callback: playback event: " + playerEvent.name());
handleSpotifyEvent(playerEvent);
}
@Override
public void onPlaybackError(Error error) {
Log.d(Constants.TAG, "Spotify player notif callback: playback error: " + error.name());
handleSpotifyError(error);
}
};
// recycler view
List<Track> playList = application.getPlaylist();
trackListRecyclerView = (RecyclerView) findViewById(R.id.track_list_recycler);
trackListRecyclerView.setHasFixedSize(true);
trackListLayoutManager = new LinearLayoutManager(this);
trackListRecyclerView.setLayoutManager(trackListLayoutManager);
trackListAdapter = new TrackListAdapter(PlayerActivity.this, playList);
trackListRecyclerView.setAdapter(trackListAdapter);
// get track list click events as observable
trackListAdapter.asObservable().subscribe(new Action1<Track>() {
@Override
public void call(Track track) {
// TODO make other adapter list items not clickable until one is processed?
labelNowPlaying.setText(track.getName());
spotifyPlayer.playUri(null, track.getUri(), 0, 0);
}
});
// spotify player callback
spotifyConnectionStateCallback = new ConnectionStateCallback() {
@Override
public void onLoggedIn() {
Log.d(Constants.TAG, "Spotify connection callback: User logged in");
}
@Override
public void onLoggedOut() {
Log.d(Constants.TAG, "Spotify connection callback: user logged out");
}
@Override
public void onLoginFailed(Error e) {
Log.d(Constants.TAG, "Spotify connection callback: login failed: " + e.toString());
}
@Override
public void onTemporaryError() {
Log.d(Constants.TAG, "Spotify connection callback: temp error occurred");
}
@Override
public void onConnectionMessage(String message) {
Log.d(Constants.TAG, "Spotify connection callback: connection message: " + message);
}
};
spotifyPlayerOperationCallback = new Player.OperationCallback() {
@Override
public void onSuccess() {
Log.d(Constants.TAG, "Spotify operation callback: success");
}
@Override
public void onError(Error error) {
Log.d(Constants.TAG, "Spotify operation callback: error " + error.name());
Toast.makeText(PlayerActivity.this, "Spotify op error: " + error.name(), Toast.LENGTH_SHORT).show();
}
};
spotifyAccessToken = application.getSpotifyAccessToken();
initSpotifyPlayer();
}
@Override
protected void onDestroy() {
Spotify.destroyPlayer(this);
super.onDestroy();
}
//
// private
//
//
// SPOT
//
private void initSpotifyPlayer() {
Log.d(Constants.TAG, "initSpotifyPlayer");
if (spotifyAccessToken == null) {
Toast.makeText(this, "Spotify access token not present, cannot continue", Toast.LENGTH_LONG).show();
return;
}
Config playerConfig = new Config(this, spotifyAccessToken, application.getSpotifyClientId());
Spotify.getPlayer(playerConfig, this, new SpotifyPlayer.InitializationObserver() {
@Override
public void onInitialized(SpotifyPlayer player) {
spotifyPlayer = player;
spotifyPlayer.addConnectionStateCallback(spotifyConnectionStateCallback);
spotifyPlayer.addNotificationCallback(spotifyPlayerNotificationCallback);
}
@Override
public void onError(Throwable throwable) {
Log.e(Constants.TAG, "Could not initialize player: " + throwable.getMessage());
}
});
}
private void handleSpotifyEvent(final PlayerEvent playerEvent) {
Log.d(Constants.TAG, "Spotify playerEvent:" + playerEvent.name());
switch (playerEvent) {
case kSpPlaybackEventAudioFlush:
break;
case kSpPlaybackNotifyAudioDeliveryDone:
break;
case kSpPlaybackNotifyBecameActive:
break;
case kSpPlaybackNotifyBecameInactive:
break;
case kSpPlaybackNotifyContextChanged:
break;
case kSpPlaybackNotifyLostPermission:
Toast.makeText(PlayerActivity.this, "Spotify player perms lost (logged in elsewhere?)", Toast.LENGTH_LONG).show();
buttonPlayPause.setImageResource(android.R.drawable.ic_media_play);
startActivity(new Intent(PlayerActivity.this, MainActivity.class));
break;
case kSpPlaybackNotifyMetadataChanged:
break;
case kSpPlaybackNotifyNext:
break;
case kSpPlaybackNotifyPause:
buttonPlayPause.setImageResource(android.R.drawable.ic_media_play);
break;
case kSpPlaybackNotifyPlay:
buttonPlayPause.setImageResource(android.R.drawable.ic_media_pause);
// TODO get current playing track here?
//labelNowPlaying.setText(spotifyPlayer.getMetadata().currentTrack.
break;
case kSpPlaybackNotifyPrev:
break;
case kSpPlaybackNotifyRepeatOff:
break;
case kSpPlaybackNotifyRepeatOn:
break;
case kSpPlaybackNotifyShuffleOff:
break;
case kSpPlaybackNotifyShuffleOn:
break;
case kSpPlaybackNotifyTrackChanged:
break;
case kSpPlaybackNotifyTrackDelivered:
break;
default:
break;
}
}
private void handleSpotifyError(final Error error) {
Log.e(Constants.TAG, "Spotify Error:" + error.name());
switch (error) {
// corrupt track, add is playing, need perms, travel restriction, etc
default:
break;
}
}
}
がこれをクリアするためにどうもありがとうございます。ここでは
は、（完全または完璧！、包括的ではないが、始めるのに役立つかもしれない一つのサンプルプロジェクトからの簡単な例ではない）に役立つかもしれない例です。アップ:) – Kirmani88