How to identify that a user came from laucher or from shortcut of my Android App?

I am developing an android app where i am creating a shortcut from HomeActivity and from that shortcut i move back to HomeActivity.

My problem is i want to send some url in shortcut and want to get back that url when user come from shortcut to HomeAtivity.

Here's code :

HomeActivity

private void addShortcut() {

    Intent shortcutIntent = new Intent(getApplicationContext(),HomeActivity.class);
    shortcutIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
    shortcutIntent.putExtra("shortcutKey", "http://ift.tt/1IRkq5d");
    shortcutIntent.setAction(Intent.ACTION_MAIN);

    Intent addIntent = new Intent();
    addIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
    addIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, AppConstants.shortcutTitle);
    addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE,
            Intent.ShortcutIconResource.fromContext(getApplicationContext(),R.drawable.ic_launcher));
    addIntent.putExtra("duplicate", false);
    addIntent.setAction("com.android.launcher.action.INSTALL_SHORTCUT");

    getApplicationContext().sendBroadcast(addIntent);

    Toast.makeText(getApplicationContext(), AppConstants.shortcutDone, 40).show();

Shortcut is created successfully. Now i click on Shortcut and come back to HomeActivity and getting intent but with null pointer exception...

String  shortcutUrl = getIntent().getStringExtra("shortcutKey");

    if(shortcutUrl.equals("")){

        setupWebView("http://ift.tt/gbk8l4");

    }
    else{

        Log.e("shortcut was created", "url from shortcut");
        setupWebView(shortcutUrl);

    }

So what should i do to get that data back.Thanks in advance and ready to vote up for right answer.