问题
I'm trying to add a custom user action to my media session so that it shows up on the android auto action card, but I can't seem to get it to work. I've looked around, but didn't find much on how to explicitly add a custom action. I've included all the relevant code that is a part of my implementation of the only custom action I am trying to implement.
I would like to know what is it I'm missing and/or is doing wrong. Thank you.
public class MyMediaBrowserService extends MediaBrowserServiceCompat{
//Variables Declared here ...
@Override
public void onCreate(){
mediaSession = new MediaSessionCompat(this, TAG);
mediaSessionCallback = new MyMediaSessionCallback();
mediaSession.setCallback(mediaSessionCallback);
// Enable callbacks from MediaButtons and TransportControls
mediaSession.setFlags(
MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS |
MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS);
MediaSessionCompat.Token token = mediaSession.getSessionToken();
setSessionToken(token);
mediaNotificationManager = new MediaNotificationManager(this);
// Set an initial PlaybackState with ACTION_PLAY, so media
buttons can start the player
mStateBuilder = new PlaybackStateCompat.Builder()
.setActions(
PlaybackStateCompat.ACTION_PLAY |
PlaybackStateCompat.ACTION_PAUSE |
PlaybackStateCompat.ACTION_SKIP_TO_NEXT |
PlaybackStateCompat.ACTION_SKIP_TO_PREVIOUS)
.addCustomAction(CUSTOM_ACTION_REPEAT, "Repeat Mode",
R.drawable.ic_repeat_none);
mediaSession.setPlaybackState(mStateBuilder.build());
mediaSession.setActive(true);
mediaPlayer = new DefaultMediaPlayer(this,
new DefaultMediaPlaybackListener());
}
...
public class MyMediaSessionCallback extends
MediaSessionCompat.Callback {
//Variables Declared here ...
// The following methods are actually implemented in the
// project, and functions as they are supposed to.
// They are mentioned here for the sake of showing their
// existence with relations to the PlaybackStateCompat set
// above.
@Override public void onAddQueueItem(MediaDescriptionCompat
description) { ... }
@Override public void onRemoveQueueItem(MediaDescriptionCompat
description) { ... }
@Override public void onPlayFromMediaId(String mediaId,
Bundle extras) { .... }
@Override public void onPlay() { ... }
@Override public void onPause() { ... }
@Override public void onStop() { ... }
@Override public void onSkipToNext() { ... }
@Override public void onSkipToPrevious() { ... }
@Override public void onSeekTo(long pos) { ... }
// This is the actual implement of the onCustomAction method
// I never got it working so I figured I'll start by logging it
// first before spending time coding it
@Override
public void onCustomAction(String action,
Bundle extras) {
if(action.equals(CUSTOM_ACTION_REPEAT))
Log.e(TAG, "Custom action is REPEAT");
}
...
}
}
来源：https://stackoverflow.com/questions/53708164/adding-a-custom-user-action-to-the-android-media-session