How to know if a Fragment is Visible?

Question

I\'m using the support library v4 and my questions are, How to know if a Fragment is Visible? and How can I change the propierties of the Layout inflated in the Fragment? Th

Answer 1

ArticleFragment articleFrag = (ArticleFragment)
            getSupportFragmentManager().findFragmentById(R.id.article_fragment);

    if (articleFrag != null && articleFrag.isVisible()) {

        // Call a method in the ArticleFragment to update its content
        articleFrag.updateArticleView(position);
    }

see http://developer.android.com/training/basics/fragments/communicating.html