http://agilecatcloud.com/2014/12/09/ios-%E3%81%8B%E3%82%89-android-%E3%81%B8-%EF%BC%9A-facebook-%E3%81%AF%E5%84%AA%E5%85%88%E9%A0%86%E4%BD%8D%E3%82%92%E5%88%87%E3%82%8A%E6%9B%BF%E3%81%88%E3%82%8B%E3%81%AE%E3%81%8B%EF%BC%9F/