FaceDetectionTutorial

Explanatory tutorial can be found here: http://blog.blundell-apps.com/tut-front-camera-face-detection-with-preview/

Load your front facing camera like this

FrontCameraRetriever.retrieveFor(context);

Add a preview to your activity layout

SurfaceView cameraSurface = new CameraSurfaceView(context, camera, this);
((FrameLayout) findViewById(R.id.helloWorldCameraPreview)).addView(cameraSurface);

Listen for face detection like this

@Override
public void onFaceDetected() {
   
}

@Override
public void onFaceTimedOut() {

}

@Override
public void onFaceDetectionNonRecoverableError() {

}