Facebook API - How to cancel Graph Request

Question

I occasionally need to cancel a FaceBook graph request, but there seems to be no cancel or similar method in their API to do so. At the moment, crashes sometimes occur as th

Answer 1

Since SDK 3.1, it's very easy, as startWithCompletionHandler: returns a FBRequestConnection object, which has a -(void)cancel; method.

For example:

// In interface or .h definitions:
@property (strong, nonatomic) FBRequest             *fBRequest;
@property (strong, nonatomic) FBRequestConnection   *fbConnection;

// when needed in class (params should be set elsewhere, this is just an example):
self.fBRequest = [[FBRequest alloc] initWithSession:[FBSession activeSession] graphPath:@"me/photos" parameters:params HTTPMethod:@"POST"];
self.fbConnection = [self.fBRequest startWithCompletionHandler:^(FBRequestConnection *connection, id result, NSError *error){
    NSLog(@"Publish complete, error: %d", error.code);
}];

// now, to cancel anywhere in the class, just call:
[self.fbConnection cancel];