@Override
                        public void onClick(DialogInterface dialog, int which) {
                            dialog.dismiss();
                            if (alertboxBlock) {
                                result.confirm();
                            }
                        }
This method can be called in any thread, and if it is not called in the main thread,
it will be automatically distributed to the main thread.

@param url
@param additionalHttpHeaders
app/src/main/java/com/example/jingbin/webviewstudy/view/WVJBWebView.java