Button Action on login Button click in FBConnect API

Question

I am using fbconnect api in my project.When the login dialog gets opened where we entered our credentials ,when I click on login button there is something performed and it is redirected to the publish page. My problem is I am not getting which action is performed on that login button so that I can put an indicator over there.

I have attached a screenshot to specify which button I am talking about. enter image description here

Any suggestions will be highly appreciated!

EmptyStack · Accepted Answer · 2011-08-30T10:13:55.223

4

Do you want to steal others' Facebook passwords? :)

It seems, FBConnect uses UIWebView to load the pages from web. Those form elements are not created from the code. So you can not have the access to those methods/actions.

Tracking the login button action using UIWebViewDelegate:

In webView:shouldStartLoadWithRequest:navigationType: delegate method in FBDialog.m, you can see the request which are sent from the login view.

You can read the URL by using [request.URL absoluteString]. Check if that URL contains the string https://www.facebook.com/login.php?m=m. If it is YES then probably a login request is being sent. You can do your action there.

Note: I am not sure this will always work. You can do further research to find a better solution.

edited Aug 30 '11 at 10:13

answered Jun 02 '11 at 12:04

EmptyStack

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Here is standard Facebook dialog that appears when device is not support multitasking. – SVGreg Jun 02 '11 at 12:13
@Simon no my requirement is when I click this button activity indicator gets opened until new dialog gets open. – Gypsa Jun 02 '11 at 12:30
@Gypsa, You want to show an activity indicator when user taps the login button? FBConnect already displays an activity indicator, right? – EmptyStack Jun 02 '11 at 12:49
no it dont display on clicking login button which is shown in screenshot – Gypsa Jun 02 '11 at 13:01
@Gypsa, Ok. You don't want to display an activity indicator when the login button is pressed. What you want to do when the login button is pressed? – EmptyStack Jun 02 '11 at 13:07
@Simon: I mean the screenshot in question. – SVGreg Jun 02 '11 at 14:01
@Gypsa: as say Simon - you need to use UIWebViewDelegate to catch login action – SVGreg Jun 02 '11 at 14:04

score 1 · Answer 2 · answered Jun 02 '11 at 12:05

When you push login button - the login request will send to FB server only. To get answer you need to implement FBSessionDelegate protocol:

/**
 * Called when the user successfully logged in.
 */
- (void)fbDidLogin;

/**
 * Called when the user dismissed the dialog without logging in.
 */
- (void)fbDidNotLogin:(BOOL)cancelled;

/**
 * Called when the user logged out.
 */
- (void)fbDidLogout;

Button Action on login Button click in FBConnect API

2 Answers2