title: Set camera focus at controlled fixed distance on Android
body: <p>My device has only two focus modes, AUTO and FIXED (as per getSupportedFocusModes()).
  I want to set my camera at a fixed focus distance of 'x' (x being whatever I like, or whatever I can get from the camera..). (I'm aware of <code>setFocusMode(Camera.Parameters.FOCUS_MODE_FIXED)</code>, but this seems to be fixed only on the farthest possible setting..)</p>
  
  <p>Can this be done? (Android version 4.2.2)</p>