-[FBSession checkThreadAffinity]中的断言失败导致应用程序崩溃，“ FBSession：仅应从单个线程使用”

Question

我在我的应用程序中使用facebook SSON。 当我调用我的方法时[self openSessionWithAllowLoginUI：NO]; 在该块内，其崩溃并显示以下错误消息。

   *** Assertion failure in -[FBSession checkThreadAffinity], /Users/chrisp/tmp/build-sdk/ios-sdk/src/FBSession.m:1571
  Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'FBSession: should only be used from a single thread'
  *** First throw call stack:
  (0x2f2c2fd3 0x39a42ccf 0x2f2c2ead 0x2fc6fd5b 0x407c27 0x4050a5 0x406ab1 0x405c43 0x40662d 0x39f2a833 0x39f2a81f 0x39f2a777 0x2f28d8f1 0x2f28c1c5 0x2f1f6f4f 0x2f1f6d33 0x340fb663 0x31b4216d 0x7fdc7 0x2f0c0)
 libc++abi.dylib: terminating with uncaught exception of type NSException

我知道它说的东西就像我从两个或多个线程中调用FBSession一样，我应该从一个线程中调用它，但是我无法在其他地方调用此线程。

我的代码是：

-(void)facebook
{
ACAccountStore  *accountStore;
accountStore = [[ACAccountStore alloc]init];
ACAccountType *FBaccountType= [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];
NSDictionary *dictFB = [NSDictionary dictionaryWithObjectsAndKeys:kFACEBOOK_APPID,ACFacebookAppIdKey,@[@"email"],ACFacebookPermissionsKey, nil];
[accountStore requestAccessToAccountsWithType:FBaccountType options:dictFB completion:
 ^(BOOL granted, NSError *e) {
     if (granted)
     {
         NSArray *accounts = [accountStore accountsWithAccountType:FBaccountType];
         if ([accounts count] == 0) {
         }
         else{
             ACAccount *facebookAccount;
             NSLog(@"Facebook account Found");
             facebookAccount = [accounts firstObject];
             ACAccountCredential *facebookCredential = [facebookAccount credential];
             NSString *accessToken = [facebookCredential oauthToken];
             NSLog(@"Facebook Access Token: %@", accessToken);
             NSLog(@"facebook account =%@",facebookAccount);
         }
     }
     else
     {
         NSLog(@"error getting permission %@",e);
         [self openSessionWithAllowLoginUI:NO];
     }
 }];
}

但是，如果我不希望在块中使用它正常工作，但是我需要直接从需要在块中使用它的设置应用程序中实现Facebook SSO。

没有障碍，我这样称呼它：

-(void)facebook
{
ACAccountStore  *accountStore;
accountStore = [[ACAccountStore alloc]init];
ACAccountType *FBaccountType= [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];
NSDictionary *dictFB = [NSDictionary dictionaryWithObjectsAndKeys:kFACEBOOK_APPID,ACFacebookAppIdKey,@[@"email"],ACFacebookPermissionsKey, nil];
[self openSessionWithAllowLoginUI:NO];

}

如果您需要更多代码，请告诉我。

Answer 1

尝试做

dispatch_async(dispatch_get_main_queue(), ^{ 

   [self openSessionWithAllowLoginUI:NO]; 

});