Android : unable to open url after lock screen

My code to open url in browser is

private void openBrowserUrl(String url) {
    Intent i = new Intent(Intent.ACTION_VIEW);
    System.out.println("============Url==================" + url);

    i.setData(Uri.parse(url));
    startActivity(i);
    unlock(UNLOCK_TO_HOME);
}

Above is working fine when there is no pattern lock.

But When I tried to open browser after pattern lock, url value remain blank.

I have custom lock screen in my application.. When phone is locked, after that, I tried to unlock the phone at that time custom lock screen is opened by my application. and in that I have written this code. I got url value and it successfully passes to browser.

But, I tried with above process with patter lock(default lock system of android)

then the flow is

custom lock screen-->open url code(got the url value)-->default pattern lock-->browser without url value.

In above flow, when pattern lock is there, browser unable to get url which I have passed.