There is some custom attributes you can adjust from the xml:
foregroundColor : the equalizer bars color (default is black)
animDuration : (millisecs) the animation follows a pattern and the number of loops is infinite. To set the duration of each loop, use this attribute.
Initialization + animation
To start animating the equalizer you should add:
EqualizerView equalizer = (EqualizerView) findViewById(R.id.equalizer_view);
equalizer.animateBars(); // Whenever you want to tart the animation
equalizer.stopBars(); // When you want equalizer stops animating