SimpleCamera.java

private Camera getCameraInstance() {
     try {
         // attempt to get a Camera instance
         // this will open the default camera, which is the back-facing camera (if it exists)
         mCamera = Camera.open();

         // need to handle the Media Server Dying
         mCamera.setErrorCallback(getErrorCallback());
         Log.d(TAG, "Camera Opened Successfully");
     } catch (RuntimeException e) {
         Log.d(TAG, "Failed to Open Camera - " + e.getMessage());
         // Camera is not available (in use or does not exist)
     }
     return mCamera; // returns null if camera is unavailable
 }