@Override
public void onViewCreated(final View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);

    // This is done in a post() since the dialog must be drawn before locating.
    getView().post(new Runnable() {

        @Override
        public void run() {

            Window dialogWindow = getDialog().getWindow();

            // Make the dialog possible to be outside touch
            dialogWindow.setFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL,
                    WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL);
            dialogWindow.clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);

            getView().invalidate();
        }
    });
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Hide title of the dialog
    setStyle(STYLE_NO_FRAME, 0);
}

window.setFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
        WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);

@Override
public void onStart() {
    // mDialogView is member variable
    mDialogView = getView();
    mDialogView.setOnTouchListener(new View.OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            float eventX = event.getRawX();
            float eventY = event.getRawY();

            int location[] = new int[2];
            mDialogView.getLocationOnScreen(location);

            if (eventX < location[0] || eventX > (location[0] + mDialogView.getWidth()) || eventY < location[1]
                    || eventY > location[1] + mDialogView.getHeight()) {
                dismiss();
                return true;
            }
            return false;
        }
    });
}

FragmentTransaction transaction = fragmentManager.beginTransaction();
    // For a little polish, specify a transition animation
    transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
    // To make it fullscreen, use the 'content' root view as the container
    // for the fragment, which is always the root view for the activity
    transaction.add(android.R.id.content, newFragment)
               .addToBackStack(null).commit();

@NonNull
@Override
public Dialog onCreateDialog(@Nullable final Bundle savedInstanceState) {
    final Dialog dialog = super.onCreateDialog(savedInstanceState);
    dialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL);
    return dialog;
}