如何从ExoPlayer获取媒体会话令牌

import com.google.android.exoplayer2.ExoPlayer;
import com.google.android.exoplayer2.MediaSession;
import com.google.android.exoplayer2.ui.PlayerNotificationManager;

// 初始化 ExoPlayer
ExoPlayer player = new SimpleExoPlayer.Builder(context).build();

// 创建 MediaSession
MediaSession mediaSession = new MediaSession.Builder(context, player)
    .setSessionActivity(pendingIntent)
    .build();

// 获取媒体会话令牌
MediaSession.Token mediaSessionToken = mediaSession.getSessionToken();

// 使用媒体会话令牌进行进一步操作，例如设置 PlayerNotificationManager
PlayerNotificationManager notificationManager = new PlayerNotificationManager.Builder(context, NOTIFICATION_ID)
    .setMediaSessionToken(mediaSessionToken)
    .build();

// 确保 MediaSession 处于激活状态
mediaSession.setActive(true);