ARCore – How do I change camera focus to “Auto Focus”?

Question

I am trying to implement the Augmented Images example but for an object that is really close to the camera. Thus, I need the focus to be changed as the fixed focus makes the foreground object completely blurred.

I am using Java in Android Studio along with Sceneform ARCore 1.6 for this project and it would really help if some code were posted along with a solution so I can implement this.

I have tried the following, but get an error saying 'Cannot resolve symbol 'context''

Session session = new Session(context);
Config config = new Config(session);

config.setFocusMode(Config.FocusMode.AUTO);
session.configure(config);

Answer 1

Use the following code for proper configuration:

Session session = new Session(context);
Config configuration = new Config(session);

if (enableAutoFocus) {
    configuration.setFocusMode(Config.FocusMode.AUTO);
} else {
    configuration.setFocusMode(Config.FocusMode.FIXED);
}

session.configure(configuration);

But at the time of writing this post, Google confirms that autofocus isn't working in ARCore 1.8 for some LG models.