title: ExoPlayer - changing thumb in DefaultTimeBar
body: <p>As I understand from releas note of version 2.4.0 Exoplayer<code>SeekBar</code> was replaced by <code>DefaultTimeBar</code>.
  <a href="https://github.com/google/ExoPlayer/blob/dev-v2/RELEASENOTES.md" rel="nofollow noreferrer">https://github.com/google/ExoPlayer/blob/dev-v2/RELEASENOTES.md</a></p>
  
  <p>As I can seen, as on 19Feb2017: <a href="https://github.com/bigexxx/ExoPlayer/blob/c5db6f39a6e07b4f98364ff40476e4e213172488/library/src/main/java/com/google/android/exoplayer2/ui/PlaybackControlView.java" rel="nofollow noreferrer">https://github.com/bigexxx/ExoPlayer/blob/c5db6f39a6e07b4f98364ff40476e4e213172488/library/src/main/java/com/google/android/exoplayer2/ui/PlaybackControlView.java</a>
  exo_progress was SeekBar type:</p>
  
  <p>(line 285):
  <code>progressBar = (SeekBar) findViewById(R.id.exo_progress);</code></p>
  
  <p>And right now:
  github.com/google/ExoPlayer/blob/release-v2/library/ui/src/main/java/com/google/android/exoplayer2/ui/PlaybackControlView.java</p>
  
  <p>it is:</p>
  
  <p>(line: 384):<code>timeBar = (TimeBar) findViewById(R.id.exo_progress);</code></p>
  
  <p>DefaultTimeBar does not have method like <code>.setThumb()</code> and it seems to me that thumb is created as <code>Canvas</code> in <code>drawPlayhead(Canvas canvas)</code>.</p>
  
  <p>Question: is is possible to set own thumb icon in <code>DefaultTimeBar</code>?</p>