如果朋友们的应用程序安装iOS版Facebook的检查 [英] iOS facebook check if friends have app installed

问题描述

有已经与Facebook的API的ios的方式来获得已经安装了谁是你的应用程序的好友列表？我基本上需要类似字与朋友，他们可以决定哪些你的FB朋友都在玩游戏什么的。我有一个解决方案，它需要一些额外的数据库使用但也许希望FB的API有一些内置该类型的查询。

Is there already a way with the facebook ios API to get a list of friends who have your app installed? I basically require something similar to "Words with Friends" where they can determine which of your FB friends are playing the game. I have one solution which requires some extra database use but was hoping maybe the FB api had something built in for this kind of query.

推荐答案

创建一个 FBFriendPickerDelegate 委托类并覆盖该功能：

Create a FBFriendPickerDelegate delegate class and override this function:

-(BOOL)friendPickerViewController:(FBFriendPickerViewController *)friendPicker shouldIncludeUser:(id<FBGraphUser>)user{
    BOOL installed = [user objectForKey:@"installed"] != nil;
    return installed;
}

对于没有安装应用的用户，安装字段将无，但您有权要求当你加载数据：

For users that do not have your app installed, installed field will be nil, but you have to request it when you load data:

self.friendsController = [[FBFriendPickerViewController alloc] initWithNibName:nil bundle:nil];
//...
NSSet *fields = [NSSet setWithObjects:@"installed", nil];
self.friendPickerController.fieldsForRequest = fields;
//...
[self.friendsController loadData];

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