Facebook SDK 3.2

如果你是用github下載FacebookSDK
你將先build the framework

打開command line進入FacebookSDK的路徑
輸入
scripts/build_framework.sh
Then, FacebookSDK.framework will appear in FacebookSDK/build

在Delegate中一定要實做下面這兩個方法，不然授權完回到我們的App時不會觸發login等相關的動作。
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
return [self.facebook handleOpenURL:url];
}

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
return [self.facebook handleOpenURL:url];
}

這裡有詳細教學
http://www.erawppa.com/整合-ios-facebook-sdk/
http://bani.org/blog/?tag=objective-c