ACAccountStore Facebook错误

Question

我有一个user_photos启用了Facebook 权限的应用.问题是,如果我去Facebook并删除应用程序,iOS不会注意到这一点.ACAccountStore说我有权限,所以requestAccess...返回"授予",但是一旦我尝试了SLRequest,我就会得到一个错误Error validating access token: User XXXXX has not authorized application YYYYY,并且应用程序不再出现在Facebook上.

解决方法是转到设备上的"设置" - >"Facebook",然后关闭并重新启用我的应用程序的权限.下次我尝试requestAccess,我被要求再次确认访问,然后应用程序重新安装在Facebook,一切正常.

ACAccountStore *accountStore = [[[ACAccountStore alloc] init] autorelease];
ACAccountType *accountType = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];

[accountStore requestAccessToAccountsWithType:accountType
                                      options:@{ACFacebookAppIdKey:       kFacebookAppID,
                                                ACFacebookPermissionsKey: @[@"user_photos"]}
                                   completion:^(BOOL granted, NSError *error)
{
   if( error ) {
      NSLog( @"account permission error %@", error );
   }
   else if( granted ) {
      NSURL *requestURL = [NSURL URLWithString:@"https://graph.facebook.com/me/albums"];
      SLRequest *request = [SLRequest requestForServiceType:SLServiceTypeFacebook
                                              requestMethod:SLRequestMethodGET
                                                        URL:requestURL
                                                 parameters:[NSMutableDictionary dictionary]];
      NSArray *accounts = [accountStore accountsWithAccountType:accountType];
      if( [accounts count] > 0 ) {
         request.account = accounts[0];
         [request performRequestWithHandler:^ (NSData *responseData, NSHTTPURLResponse *response, NSError *error)
         {
            if( error ) {
               NSLog( @"error accessing Facebook account: %@", error );
            }
            else {
               NSDictionary *data = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:nil];
               if( data[@"error"] != nil ) {
                  NSLog( @"error loading request: %@", data[@"error"] );
               }
               else {
                  NSLog( @"success! %@", data );
               }
            }
         }];
      }
      else {
         NSLog( @"error: no Facebook accounts" );
      }
   }
}];

在我的情况下,我总是从Facebook删除应用程序后得到最后的错误("错误加载请求:"),没有其他错误.在设备的设置中切换应用程序的权限后,我获得了成功.

Answer 1

根据Apple的说法,这可以按预期工作(BS!).实际上,事实证明你必须先ACAccountStore通过电话与Facebook同步renewCredentialsForAccount.在这种情况下,结果是ACAccountCredentialRenewResultRejected.然后您可以ACAccountStore requestAccessToAccountsOfType再次呼叫,最终会提示用户再次允许您的应用.