为何Facebook Graph API无法获取页面全部公开活动？

This is directly tied to Facebook's data access restriction policy announced in April 2018. Let’s break down the key reasons behind this behavior:

• Event visibility & API permission constraints
  After the policy rolled out, Facebook imposed strict limits on which public page events the Graph API can retrieve. Only specific events will be returned: usually those scheduled within the next 7 days, or events set to fully public and configured to allow API scraping. Past events, events targeted to specific audiences, or those without proper API permissions enabled by the page admin get filtered out—even if they’re visible on the page’s frontend.

• Legacy API version limitations
  You’re using Graph API v2.12, a version that was active right when the 2018 restrictions were introduced. Facebook has since discontinued support for older API versions, and these legacy builds face even tighter permission scopes. While newer API versions still have restrictions, they follow more transparent rules, whereas v2.12’s limited access is a major contributor to the partial results.

• Page-level configuration impacts
  Even if the page displays many events to regular users, some events might have non-public privacy settings or restricted discoverability rules. These settings can make events visible to frontend visitors but inaccessible to the Graph API due to the 2018 data access policies.

If you want to dig deeper, you could test with a newer supported API version, check the privacy settings of the missing events on the page, or review Facebook’s official developer docs for the latest event API guidelines.

内容的提问来源于stack exchange，提问作者Jen