@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {

boolean overrideUrlLoading = false;

if (url != null && url.startsWith("whatsapp://")) {

view.getContext().startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)));

overrideUrlLoading = true;

} else {

view.loadUrl(url);
}

return overrideUrlLoading;
        }