我有以下代码：
[[[PFFacebookUtils logInInBackgroundWithAccessToken:[FBSDKAccessToken currentAccessToken]] continueWithSuccessBlock:^id(BFTask *task) {
PFUser *user = task.result;
return user;
}] continueWithSuccessBlock:^id(BFTask *task) {
BFTaskCompletionSource *source = [BFTaskCompletionSource taskCompletionSource];
FBSDKGraphRequest *request = [[FBSDKGraphRequest alloc] initWithGraPHPath:@"me" parameters:nil];
[request startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection,id result,NSError *error) {
if (error) {
[source setError:error];
return;
}
[source setResult:result];
}];
return source.task;
}];
FBSDKGraphRequest在Bolts任务之外工作正常,但在任务内部没有调用startWithCompletionHandler.
有任何想法吗？
解决方法
我找到了解决方法.只需将其包装在主线程块中即可.它会像魅力一样工作.
dispatch_async(dispatch_get_main_queue(),^{
FBSDKGraphRequest *request = [[FBSDKGraphRequest alloc] initWithGraPHPath:@"me" parameters:nil];
[request startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection,NSError *error) {
if (error) {
[source setError:error];
return;
}
[source setResult:result];
}];
});
