Source code
package android.support.v4.media;
public abstract class TransportController {
public abstract int getBufferPercentage();
public abstract long getCurrentPosition();
public abstract long getDuration();
public abstract int getTransportControlFlags();
public abstract boolean isPlaying();
public abstract void pausePlaying();
public abstract void registerStateListener(TransportStateListener transportStateListener);
public abstract void seekTo(long j);
public abstract void startPlaying();
public abstract void stopPlaying();
public abstract void unregisterStateListener(TransportStateListener transportStateListener);
}