Java MediaMetadata.getDescription方法代码示例

import android.media.MediaMetadata; //导入方法依赖的package包/类
private static List<MediaSession.QueueItem> convertToQueue(
        Iterable<MediaMetadata> tracks, String... categories) {
    List<MediaSession.QueueItem> queue = new ArrayList<>();
    int count = 0;
    for (MediaMetadata track : tracks) {

        // We create a hierarchy-aware mediaID, so we know what the queue is about by looking
        // at the QueueItem media IDs.
        String hierarchyAwareMediaID = MediaIDHelper.createMediaID(
                track.getDescription().getMediaId(), categories);

        MediaMetadata trackCopy = new MediaMetadata.Builder(track)
                .putString(MediaMetadata.METADATA_KEY_MEDIA_ID, hierarchyAwareMediaID)
                .build();

        // We don't expect queues to change after created, so we use the item index as the
        // queueId. Any other number unique in the queue would work.
        MediaSession.QueueItem item = new MediaSession.QueueItem(
                trackCopy.getDescription(), count++);
        queue.add(item);
    }
    return queue;

}
 

import android.media.MediaMetadata; //导入方法依赖的package包/类
/**
 *
 * @return
 */

public static List<MediaBrowser.MediaItem> getMediaItems() {
    List<MediaBrowser.MediaItem> retVal = new ArrayList<MediaBrowser.MediaItem>()  ;

    MediaBrowser.MediaItem newMediaItem = null ;

    for (MediaMetadata aMetadata:  musicCollectionMap.values()) {
        newMediaItem = new MediaBrowser.MediaItem( aMetadata.getDescription(), MediaBrowser.MediaItem.FLAG_PLAYABLE) ;
        retVal.add( newMediaItem) ;
    }

    return retVal ;
}
 

import android.media.MediaMetadata; //导入方法依赖的package包/类
public void update(MediaMetadata metadata, PlaybackState state, MediaSession.Token token) {
    if (state == null || state.getState() == PlaybackState.STATE_STOPPED ||
            state.getState() == PlaybackState.STATE_NONE) {
        muziKarMusicService.stopForeground(true);
        try {
            muziKarMusicService.unregisterReceiver(this);
        } catch (IllegalArgumentException ex) {
            Log.w ( TAG, "update metadata=" + metadata) ;
        }
        muziKarMusicService.stopSelf();
        return;
    }
    if (metadata == null) {
        return;
    }
    boolean isPlaying = state.getState() == PlaybackState.STATE_PLAYING;
    Notification.Builder notificationBuilder = new Notification.Builder(muziKarMusicService);
    MediaDescription description = metadata.getDescription();

    notificationBuilder
            .setContentTitle(description.getTitle())
            .setVisibility(Notification.VISIBILITY_PUBLIC)
            .setOngoing(isPlaying)
            .setWhen(isPlaying ? System.currentTimeMillis() - state.getPosition() : 0)
            .setShowWhen(isPlaying)
            .setUsesChronometer(isPlaying)
            .setContentText(description.getSubtitle())
            .setLargeIcon(LocalMusicSource.getAlbumBitmap(muziKarMusicService, description.getMediaId()))
            .setStyle(new Notification.MediaStyle().setMediaSession(token).setShowActionsInCompactView(0, 1, 2))
            .setColor(muziKarMusicService.getApplication().getResources().getColor(R.color.colorPrimary))
            .setSmallIcon(R.drawable.art);

    if ((state.getActions() & PlaybackState.ACTION_SKIP_TO_PREVIOUS) != 0) {
        notificationBuilder.addAction(previousAction);
    }

    notificationBuilder.addAction(isPlaying ? pauseAction : playAction);
    if ((state.getActions() & PlaybackState.ACTION_SKIP_TO_NEXT) != 0) {
        notificationBuilder.addAction(nextAction);
    }

    Notification notification = notificationBuilder.build();

    if (isPlaying && !runningFlag) {
        muziKarMusicService.startService(new Intent(muziKarMusicService.getApplicationContext(), MuziKarMusicService.class));
        muziKarMusicService.startForeground(NOTIFICATION_ID, notification);
        runningFlag = true;
    } else {
        if (!isPlaying) {
            muziKarMusicService.stopForeground(false);
            runningFlag = false;
        }
        notificationManager.notify(NOTIFICATION_ID, notification);
    }
}
 

import android.media.MediaMetadata; //导入方法依赖的package包/类
public void update(MediaMetadata metadata, PlaybackState state, MediaSession.Token token) {
    if (state == null || state.getState() == PlaybackState.STATE_STOPPED ||
            state.getState() == PlaybackState.STATE_NONE) {
        mService.stopForeground(true);
        try {
            mService.unregisterReceiver(this);
        } catch (IllegalArgumentException ex) {
            // ignore receiver not registered
        }
        mService.stopSelf();
        return;
    }
    if (metadata == null) {
        return;
    }
    boolean isPlaying = state.getState() == PlaybackState.STATE_PLAYING;
    Notification.Builder notificationBuilder = new Notification.Builder(mService);
    MediaDescription description = metadata.getDescription();

    notificationBuilder
            .setStyle(new Notification.MediaStyle()
                    .setMediaSession(token)
                    .setShowActionsInCompactView(0, 1, 2))
            .setColor(mService.getApplication().getResources().getColor(R.color.notification_bg))
            .setSmallIcon(R.drawable.ic_notification)
            .setVisibility(Notification.VISIBILITY_PUBLIC)
            .setContentIntent(createContentIntent())
            .setContentTitle(description.getTitle())
            .setContentText(description.getSubtitle())
            .setLargeIcon(MusicLibrary.getAlbumBitmap(mService, description.getMediaId()))
            .setOngoing(isPlaying)
            .setWhen(isPlaying ? System.currentTimeMillis() - state.getPosition() : 0)
            .setShowWhen(isPlaying)
            .setUsesChronometer(isPlaying);

    // If skip to next action is enabled
    if ((state.getActions() & PlaybackState.ACTION_SKIP_TO_PREVIOUS) != 0) {
        notificationBuilder.addAction(mPrevAction);
    }

    notificationBuilder.addAction(isPlaying ? mPauseAction : mPlayAction);

    // If skip to prev action is enabled
    if ((state.getActions() & PlaybackState.ACTION_SKIP_TO_NEXT) != 0) {
        notificationBuilder.addAction(mNextAction);
    }

    Notification notification = notificationBuilder.build();

    if (isPlaying && !mStarted) {
        mService.startService(new Intent(mService.getApplicationContext(), MusicService.class));
        mService.startForeground(NOTIFICATION_ID, notification);
        mStarted = true;
    } else {
        if (!isPlaying) {
            mService.stopForeground(false);
            mStarted = false;
        }
        mNotificationManager.notify(NOTIFICATION_ID, notification);
    }
}