android.media.session.PlaybackState#STATE_NONE源码实例Demo

下面列出了android.media.session.PlaybackState#STATE_NONE 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： android-music-player 文件： MusicPlayerActivity.java

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    MediaBrowser.MediaItem item = getItem(position);
    int itemState = MediaItemViewHolder.STATE_NONE;
    if (item.isPlayable()) {
        String itemMediaId = item.getDescription().getMediaId();
        int playbackState = PlaybackState.STATE_NONE;
        if (mCurrentState != null) {
            playbackState = mCurrentState.getState();
        }
        if (mCurrentMetadata != null &&
                itemMediaId.equals(mCurrentMetadata.getDescription().getMediaId())) {
            if (playbackState == PlaybackState.STATE_PLAYING ||
                playbackState == PlaybackState.STATE_BUFFERING) {
                itemState = MediaItemViewHolder.STATE_PLAYING;
            } else if (playbackState != PlaybackState.STATE_ERROR) {
                itemState = MediaItemViewHolder.STATE_PAUSED;
            }
        }
    }
    return MediaItemViewHolder.setupView((Activity) getContext(), convertView, parent,
        item.getDescription(), itemState);
}

源代码2 项目： android_9.0.0_r45 文件： MediaSessionRecord.java

@Override
public void setPlaybackState(PlaybackState state) {
    int oldState = mPlaybackState == null
            ? PlaybackState.STATE_NONE : mPlaybackState.getState();
    int newState = state == null
            ? PlaybackState.STATE_NONE : state.getState();
    synchronized (mLock) {
        mPlaybackState = state;
    }
    final long token = Binder.clearCallingIdentity();
    try {
        mService.onSessionPlaystateChanged(MediaSessionRecord.this, oldState, newState);
    } finally {
        Binder.restoreCallingIdentity(token);
    }
    mHandler.post(MessageHandler.MSG_UPDATE_PLAYBACK_STATE);
}

源代码3 项目： android-music-player 文件： MusicPlayerActivity.java

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    MediaBrowser.MediaItem item = getItem(position);
    int itemState = MediaItemViewHolder.STATE_NONE;
    if (item.isPlayable()) {
        String itemMediaId = item.getDescription().getMediaId();
        int playbackState = PlaybackState.STATE_NONE;
        if (mCurrentState != null) {
            playbackState = mCurrentState.getState();
        }
        if (mCurrentMetadata != null &&
                itemMediaId.equals(mCurrentMetadata.getDescription().getMediaId())) {
            if (playbackState == PlaybackState.STATE_PLAYING ||
                playbackState == PlaybackState.STATE_BUFFERING) {
                itemState = MediaItemViewHolder.STATE_PLAYING;
            } else if (playbackState != PlaybackState.STATE_ERROR) {
                itemState = MediaItemViewHolder.STATE_PAUSED;
            }
        }
    }
    return MediaItemViewHolder.setupView((Activity) getContext(), convertView, parent,
        item.getDescription(), itemState);
}

源代码4 项目： android-music-player 文件： MusicPlayerActivity.java

@Override
public void onClick(View v) {
    final int state = mCurrentState == null ?
            PlaybackState.STATE_NONE : mCurrentState.getState();
    if (state == PlaybackState.STATE_PAUSED ||
            state == PlaybackState.STATE_STOPPED ||
            state == PlaybackState.STATE_NONE) {

        if (mCurrentMetadata == null) {
            mCurrentMetadata = MusicLibrary.getMetadata(MusicPlayerActivity.this,
                    MusicLibrary.getMediaItems().get(0).getMediaId());
            updateMetadata(mCurrentMetadata);
        }
        getMediaController().getTransportControls().playFromMediaId(
                mCurrentMetadata.getDescription().getMediaId(), null);

    } else {
        getMediaController().getTransportControls().pause();
    }
}

源代码5 项目： LyricHere 文件： PlaybackControlBaseActivity.java

/**
 * Check if the MediaSession is active and in a "playback-able" state
 * (not NONE and not STOPPED).
 *
 * @return true if the MediaSession's state requires playback controls to be visible.
 */
protected boolean shouldShowControls() {
    MediaControllerCompat mediaController = mMediaController;
    if (mediaController == null ||
            mediaController.getMetadata() == null ||
            mediaController.getPlaybackState() == null) {
        return false;
    }
    switch (mediaController.getPlaybackState().getState()) {
        case PlaybackState.STATE_ERROR:
        case PlaybackState.STATE_NONE:
        case PlaybackState.STATE_STOPPED:
            return false;
        default:
            return true;
    }
}

源代码6 项目： io2015-codelabs 文件： MusicPlayerActivity.java

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    MediaBrowser.MediaItem item = getItem(position);
    int itemState = MediaItemViewHolder.STATE_NONE;
    if (item.isPlayable()) {
        String itemMediaId = item.getDescription().getMediaId();
        int playbackState = PlaybackState.STATE_NONE;
        if (mCurrentState != null) {
            playbackState = mCurrentState.getState();
        }
        if (mCurrentMetadata != null &&
                itemMediaId.equals(mCurrentMetadata.getDescription().getMediaId())) {
            if (playbackState == PlaybackState.STATE_PLAYING ||
                playbackState == PlaybackState.STATE_BUFFERING) {
                itemState = MediaItemViewHolder.STATE_PLAYING;
            } else if (playbackState != PlaybackState.STATE_ERROR) {
                itemState = MediaItemViewHolder.STATE_PAUSED;
            }
        }
    }
    return MediaItemViewHolder.setupView((Activity) getContext(), convertView, parent,
        item.getDescription(), itemState);
}

源代码7 项目： io2015-codelabs 文件： MusicPlayerActivity.java

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    MediaBrowser.MediaItem item = getItem(position);
    int itemState = MediaItemViewHolder.STATE_NONE;
    if (item.isPlayable()) {
        String itemMediaId = item.getDescription().getMediaId();
        int playbackState = PlaybackState.STATE_NONE;
        if (mCurrentState != null) {
            playbackState = mCurrentState.getState();
        }
        if (mCurrentMetadata != null &&
                itemMediaId.equals(mCurrentMetadata.getDescription().getMediaId())) {
            if (playbackState == PlaybackState.STATE_PLAYING ||
                playbackState == PlaybackState.STATE_BUFFERING) {
                itemState = MediaItemViewHolder.STATE_PLAYING;
            } else if (playbackState != PlaybackState.STATE_ERROR) {
                itemState = MediaItemViewHolder.STATE_PAUSED;
            }
        }
    }
    return MediaItemViewHolder.setupView((Activity) getContext(), convertView, parent,
        item.getDescription(), itemState);
}

源代码8 项目： io2015-codelabs 文件： MusicPlayerActivity.java

@Override
public void onClick(View v) {
    final int state = mCurrentState == null ?
            PlaybackState.STATE_NONE : mCurrentState.getState();
    if (state == PlaybackState.STATE_PAUSED ||
            state == PlaybackState.STATE_STOPPED ||
            state == PlaybackState.STATE_NONE) {

        if (mCurrentMetadata == null) {
            mCurrentMetadata = MusicLibrary.getMetadata(MusicPlayerActivity.this,
                    MusicLibrary.getMediaItems().get(0).getMediaId());
            updateMetadata(mCurrentMetadata);
        }
        getMediaController().getTransportControls().playFromMediaId(
                mCurrentMetadata.getDescription().getMediaId(), null);

    } else {
        getMediaController().getTransportControls().pause();
    }
}

源代码9 项目： android-music-player 文件： MusicPlayerActivity.java

@Override
public void onClick(View v) {
    final int state = mCurrentState == null ?
            PlaybackState.STATE_NONE : mCurrentState.getState();
    if (state == PlaybackState.STATE_PAUSED ||
            state == PlaybackState.STATE_STOPPED ||
            state == PlaybackState.STATE_NONE) {

        if (mCurrentMetadata == null) {
            mCurrentMetadata = MusicLibrary.getMetadata(MusicPlayerActivity.this,
                    MusicLibrary.getMediaItems().get(0).getMediaId());
            updateMetadata(mCurrentMetadata);
        }
        // ------------ CHANGE 5 - REMOVE FOLLOWING LINES FOR PLAYBACK ON A SERVICE
        mPlaybackManager.play(mCurrentMetadata);

        /* ------------ CHANGE 5 - UNCOMMENT FOLLOWING LINES FOR PLAYBACK ON A SERVICE
        getMediaController().getTransportControls().playFromMediaId(
                mCurrentMetadata.getDescription().getMediaId(), null);
        // ------------ CHANGE 5 - END OF PLAYBACK ON A SERVICE SNIPPET */

    } else {
        // ------------ CHANGE 6 - REMOVE FOLLOWING LINES FOR PLAYBACK ON A SERVICE
        mPlaybackManager.pause();

        /* ------------ CHANGE 6 - UNCOMMENT FOLLOWING LINES FOR PLAYBACK ON A SERVICE
        getMediaController().getTransportControls().pause();
        // ------------ CHANGE 6 - END OF PLAYBACK ON A SERVICE SNIPPET */
    }
}

源代码10 项目： io2015-codelabs 文件： MusicPlayerActivity.java

@Override
public void onClick(View v) {
    final int state = mCurrentState == null ?
            PlaybackState.STATE_NONE : mCurrentState.getState();
    if (state == PlaybackState.STATE_PAUSED ||
            state == PlaybackState.STATE_STOPPED ||
            state == PlaybackState.STATE_NONE) {

        if (mCurrentMetadata == null) {
            mCurrentMetadata = MusicLibrary.getMetadata(MusicPlayerActivity.this,
                    MusicLibrary.getMediaItems().get(0).getMediaId());
            updateMetadata(mCurrentMetadata);
        }
        // ------------ CHANGE 5 - REMOVE FOLLOWING LINES FOR PLAYBACK ON A SERVICE
        mPlaybackManager.play(mCurrentMetadata);

        /* ------------ CHANGE 5 - UNCOMMENT FOLLOWING LINES FOR PLAYBACK ON A SERVICE
        getMediaController().getTransportControls().playFromMediaId(
                mCurrentMetadata.getDescription().getMediaId(), null);
        // ------------ CHANGE 5 - END OF PLAYBACK ON A SERVICE SNIPPET */

    } else {
        // ------------ CHANGE 6 - REMOVE FOLLOWING LINES FOR PLAYBACK ON A SERVICE
        mPlaybackManager.pause();

        /* ------------ CHANGE 6 - UNCOMMENT FOLLOWING LINES FOR PLAYBACK ON A SERVICE
        getMediaController().getTransportControls().pause();
        // ------------ CHANGE 6 - END OF PLAYBACK ON A SERVICE SNIPPET */
    }
}

源代码11 项目： android-music-player 文件： MediaNotificationManager.java

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);
    }
}

源代码12 项目： io2015-codelabs 文件： MediaNotificationManager.java

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);
    }
}

源代码13 项目： android_9.0.0_r45 文件： MediaSessionRecord.java

/**
 * Check if the session is currently performing playback.
 *
 * @return True if the session is performing playback, false otherwise.
 */
public boolean isPlaybackActive() {
    int state = mPlaybackState == null ? PlaybackState.STATE_NONE : mPlaybackState.getState();
    return MediaSession.isActiveState(state);
}

方法所在类

android.media.session.PlaybackState