progress.java

  /**
     * a method to handle the state of the auth widgets, it displays a progress bar while the
     * firebase authentication network process
     * @param state if true the progress bar will be shown
     * @param view  holds the auth widget to hide or dispaly
     */
    private void showProgress(boolean state,View view){
        mProgressBarContainer =view.findViewById(R.id.progress_bar_container);
        mEmailPasswordAuthContainer = view.findViewById(R.id.email_password_auth_container);
        if(state) {
            mProgressBarContainer.setVisibility(View.VISIBLE);
            mEmailPasswordAuthContainer.setVisibility(View.GONE) ;
        } else {
            mProgressBarContainer.setVisibility(View.GONE) ;
            mEmailPasswordAuthContainer.setVisibility(View.VISIBLE);
        }
    }