在Facebook IOS SDK中禁用单点登录（SSO）

Question

We've built an iOS app that uses the Facebook SDK. Unfortunately, our client has asked that we disable backgrounding in the app and this means that the Facebook single-sign on (SSO) scheme doesn't work for us (as our app now starts from scratch when it is launched after the login/authorisation in the Facebook app).

So the question is: can we disable SSO in the Facebook iOS SDK such that it behaves like it did in older SDK versions with the Facebook login/ authorization happening within an in-app web-view?

Answer 1

Open Facebook.m file in FBconnect library and find:

- (void)authorize:(NSArray *)permissions
         delegate:(id<FBSessionDelegate>)delegate {

set:

   [self authorizeWithFBAppAuth:NO safariAuth:NO];

And FBconnect will authorize only with inside popup...

Answer 2

I don't know you can disable sso or not but i have a trick to do this.(every time need credential for login on facebook).

write these line in appDelegate's d idFinishLaunchingWithOptions method

NSHTTPCookieStorage* cookies = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (NSHTTPCookie* cookie in
[[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]) {
NSString *domainStr=(NSString *)[cookie domain];
NSLog(@"%@",domainStr);
if([domainStr isEqualToString:@".facebook.com" ])
{
[cookies deleteCookie:cookie];
}

Answer 3

[self authorizeWithFBAppAuth：NO safariAuth：NO];

Answer 4

you can save the state of your app before calling the facebook authentification process. but if the FB app is on the phone of your user, the

[facebook authorize:permissions delegate:self]

will redirect you to it.

But if you only have basic needs, you could use the webview part of the FB SDK. Using:

[facebook authorize:permissions delegate:self]

will make FB SDK displays a webview which will take care of the authorization process.