使用Symfony 2的所有页面的SetLocale（）

I'm trying to make multi languages site with symfony 2, the question now is how to make $request->setLocale() applicable on all pages or methods.For the moment I needed in every method to call $request->setLocale($newlanguage);

public function methodAAction()
{
    ...
    $request->setLocale($new_language);
    return $this->render('x');
}

public function methodBAction()
{
     ...
    $request->setLocale($new_language);
    return $this->render('y');
}

Is there any way to make it Global , I mean to call it only one time for all pages

You can do this with a listener which sets the locale for every request. See my answer on another question for some good code. Only the setLocaleForUnauthenticatedUser is necessary for your problem.