Ios 为什么从帐户加载Twitter帐户要花这么长时间？

下面是我用来访问存储在设备上的twitter帐户的代码；在我的设备上加载通常需要30秒左右，在模拟器上加载要快得多

ACAccountStore *account = [[ACAccountStore alloc] init];
ACAccountType *accountType = [account
                              accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];

[account requestAccessToAccountsWithType:accountType
                                 options:nil completion:^(BOOL granted, NSError *error)
 {
     if (granted == YES)
     {
         NSArray *arrayOfAccounts = [account
                                     accountsWithAccountType:accountType];

         if ([arrayOfAccounts count] > 0)
         {
             self.twitterAccount =
             [arrayOfAccounts lastObject];

             UIAlertView* loggedInAlert = [[UIAlertView alloc] initWithTitle:@"Success!" message:@"Successfully logged in to Twitter" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
             [loggedInAlert show];
         }
         else {
             NSLog(@"There are not any accounts to post to");
             self.twitterAccount = NULL;
             UIAlertView* noAccountAlert = [[UIAlertView alloc] initWithTitle:@"No Twitter Account Found" message:@"Check the settings of your device and make sure you are logged in to Twitter" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
             [noAccountAlert show];
         }
     } else {
         UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"Authentication Failed" message:@"Failed to gain access to Twitter account" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
         [alert show];
     }
 }];

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您是否在设备上启用了网络调节功能？我从未启用过。但是，即使这是我需要做的事情，我也不能合理地期望其他用户会这样做，是吗？不，我不能。网络调节是为了测试目的故意降低连接速度。用户将没有此选项。