title: No Touch feedback after changing Button background color in Android
body: <p>I am using Android API 21 with Android Studio.</p>
  
  <p>I changed the background color of a button. It stopped giving the touch feedback as it was giving earlier.</p>
  
  <p>I was looking for the solution and found ways to create <code>drawables</code>, however I read about touch feedback on android's developer website and I found these:</p>
  
  <blockquote>
    <blockquote>
      <p><a href="https://developer.android.com/design/style/touch-feedback.html" rel="nofollow">https://developer.android.com/design/style/touch-feedback.html</a></p>
      
      <p>Incorporating your branding is much easier because the default touch feedback works with whatever hue you choose.</p>
    </blockquote>
  </blockquote>
  
  <p>and</p>
  
  <blockquote>
    <blockquote>
      <p><a href="https://developer.android.com/design/style/branding.html" rel="nofollow">https://developer.android.com/design/style/branding.html</a></p>
      
      <p>When customizing colors, touch feedback should be subtle — just slightly lighter or darker than the untouched color.</p>
    </blockquote>
  </blockquote>
  
  <p>Does that mean, touch feedback would work even if I changed the background, automatically? Or do I need to do some work to get it working?</p>
  
  <p>Also, If I need to reproduce the feedback manually, how would I do so (any better method than drawables in latest Android Studio)?</p>
  
  <p>Just starting out with android, so pretty confused. Appreciate your help. Thank you.</p>