physical back button not working in web view android.

Question

physical back button not working in webview. When clicking on any url in web view, it is not taking me back to previous url. It is going directly to app. I have tried the following codes.

Ist method:

@Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {

      if (webView != null) {
            if ((keyCode == KeyEvent.KEYCODE_BACK) && (webView.canGoBack())) {
                webView.goBack();
                return true;
            }
        }


        return super.onKeyDown(keyCode, event);
    }

}

Second method:-

@Override
    public void onBackPressed() {
        if (webView.canGoBack())
            webView.goBack();
        else
            super.onBackPressed();
    }
}