Intent intent = new Intent(Intent.ACTION_SEND);
                intent .setType("text/plain");
                intent .setPackage("com.android.twitter");
                intent .putExtra(Intent.EXTRA_TEXT, "Hello World this message came from android app");
                try {
                    getActivity().startActivity(intent);
                } catch (android.content.ActivityNotFoundException ex) {
                    Toast.makeText(getActivity(),"Twiter not been installed.", Toast.LENGTH_LONG).show();
                }