title: Capture screen shot on Android phone when playing video and camera preview
body: <p>I have two HTC phones, one is HTC desire and another is HTC aria. I'm using ddms to capture the screenshot on HTC desire before, it works fine. However recently I buy one HTC aria, and I found when doing screenshot on camera preview and video playing (e.g. youtube clips), the result goes black.</p>
  
  <p>I think that might be some overlay issue, but just can't figure out how do capture screenshots on camera preview.</p>