iOS:XMPPFramework:无法使用gmail帐户登录

我正在使用robbiehanson的XMPPFramework开发一个简单的聊天应用程序.我在我的系统中安装了eJabberd服务器并创建了一些用户.我设置hostname ="localhost"并尝试使用该用户凭据登录.它已成功登录.当我更改主机名即hostname ="talk.google.com"时.我无法登录.我收到了"登录尝试被阻止"的邮件和

仅供参考,

- (BOOL)connectWithUsername:(NSString*)username WithPassword:(NSString*)pwd
{
    if (![xmppStream isDisconnected]) {
        return YES;
    }

   // NSString *myJID = [[NSUserDefaults standardUserDefaults] stringForKey:kXMPPmyJID];
    //NSString *myPassword = [[NSUserDefaults standardUserDefaults] stringForKey:kXMPPmyPassword];
    NSString* myJID=username;
    NSString* myPassword=pwd;
    //
    // If you don't want to use the Settings view to set the JID,
    // uncomment the section below to hard code a JID and password.
    //
    // Replace me with the proper JID and password:
    //  myJID = @"user@gmail.com/xmppframework";
    //  myPassword = @"";

    if (myJID == nil || myPassword == nil) {
        NSLog(@"JID and password must be set before connecting!");

        return NO;
    }

    [xmppStream setMyJID:[XMPPJID jidWithString:myJID]];
    password = myPassword;

    NSError *error = nil;
    if (![xmppStream connectWithTimeout:100 error:&error])
    {
        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error connecting"
                                                             message:@"See console for error details."
                                                           delegate:nil
                                                  cancelButtonTitle:@"Ok"
                                                  otherButtonTitles:nil];
        [alertView show];

        NSLog(@"Error connecting: %@", error);

        return NO;
    }


    [self goOnline];

    return YES;
}

我需要在Google Developer Console中注册应用吗？请向我提供在XMPPFramework中集成Gmail帐户的解决方案.