iOS Facebook SDK - 检查权限 [英] iOS Facebook SDK - Check Permissions

问题描述

我使用Facebook Objective-C SDK的最新版本在我的应用上完美运行了Facebook SSO。
如果用户做某事，我需要在应用程序内部获得额外的许可。如果用户之前给我的话，我不需要问这个许可，所以，我想，在Facebook SDK中应该有一个方法

I have a Facebook SSO working perfectly on my app, using last release of Facebook Objective-C SDK. I need to ask an extra permission inside the app if user do "something". I don't need to ask that permission if user gave it to me before, so, I guess, in Facebook SDK there should be a method

-(BOOL) checkPermission:(NSString*) permission;

所以我可以这样使用它：

so I can use it like this:

if( [facebook checkPermission:@"email"] ) {

有办法做到这一点吗？

Is there a way to do this?

推荐答案

这个问题有点陈旧，但您现在可以在不发出图形请求的情况下查看活动会话的权限。以下是在HelloFacebookSample中的完成方式：

This question is a bit old but you can now check what permissions the active session has without making a graph request. Here is how it's done in the HelloFacebookSample :

if ([FBSession.activeSession.permissions indexOfObject:@"publish_actions"] == NSNotFound) {
    // permission does not exist
} else {
    // permission exists
}

只需将publish_actions替换为email。

Just replace "publish_actions" with "email".

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