Here's some information how to get your Facebook API Key s for Android app and adjust it for FB login. Login into your FB account: Clic k on your app: There you'll have FB app ID: Then go to Settings on the left side menu: Click "Add platform" Ch oose Android: nFill this form with data below the screenshot: + +++++++++++++++++++++++++ ++++++++++ Package Name: com.yourpackage.n ame (replace with your package name) Class Name: com.yourpac kage.name.Home (replace with your app home class name) Key Hashes: XXXXXXxx xxxxXXXXxxxXXXX== (replace with