title: How do I open the "front camera" on the Android platform?
body: <p>More generally, if a device has more than one embedded camera,
  is there a way to initialize one of them in particular?</p>
  
  <p>I didn't find it in Android reference documentation:</p>
  
  <ul>
  <li><a href="https://developer.android.com/reference/android/hardware/Camera.html" rel="noreferrer">https://developer.android.com/reference/android/hardware/Camera.html</a></li>
  <li><a href="https://developer.android.com/reference/android/hardware/camera2/package-summary.html" rel="noreferrer">https://developer.android.com/reference/android/hardware/camera2/package-summary.html</a></li>
  <li><a href="https://developer.android.com/reference/android/hardware/camera2/CameraManager.html" rel="noreferrer">https://developer.android.com/reference/android/hardware/camera2/CameraManager.html</a></li>
  </ul>
  
  <p>Samsung SHW-M100S has two cameras. If there is no reference to use two cameras, any idea how Samsung did...?</p>