Update parameter for focus mode doesn't seems to work

Hi there,

I was trying to reset the focus mode to continuous mode 2 seconds after user tapped to focus by using the updateParameters method, but it doesn't change at all. Below are the code snippets of the resetting part along with the tap to focus.

private View.OnTouchListener onFocusTouchListener = new View.OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            cvCamera.setOnTouchListener(null);
            faCamera.focus()
                    .whenDone(new PendingResult.Callback<FocusResult>() {
                        @Override
                        public void onResult(FocusResult focusResult) {
                            hideFocusIndicator();
                            cvCamera.setOnTouchListener(onFocusTouchListener);
                        }
                    });
            new Handler().postDelayed(new Runnable() {
                @Override
                public void run() {
                    faCamera.updateParameters(
                            UpdateRequest.builder()
                                    .focusMode(
                                            Selectors.firstAvailable(
                                                    FocusModeSelectors.continuousFocus(),
                                                    FocusModeSelectors.autoFocus(),
                                                    FocusModeSelectors.fixed()
                                            ))
                                    .build()
                    );
                }
            }, 2000);
            float x = event.getX();
            float y = event.getY();
            fiFocus.updateFocusIndicator((int) x, (int) y);
            showFocusIndicator();
            return true;
        }
        return false;
    }
};

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Update parameter for focus mode doesn't seems to work #94