ios authentication with facebook and server side verification - iphone

Question

My iOs app authenticates user with Facebook using facebook-sdk.
Now application connects to server and has to confirm that the user identity. Which is recommended way?
Probably iphone has to send some kind of token to server and server has to confirm it with facebook api call
do you have link to these docs?

Answer 1

hello u want to login with Facebook in your ios Application i have use this code for it pls check it
first take web view in you r Application and do connection with Nib file .and enter your facebook Appl
- (void)viewDidLoad
{
[super viewDidLoad];
NSString *client_id = #"Enter your Application ";
NSString *redirect_uri = #"http://www.facebook.com/connect/login_success.html";
NSString *url_string = [NSString stringWithFormat:#"https://graph.facebook.com/oauth/authorize?client_id=%#&redirect_uri=%#&type=user_agent&display=touch", client_id, redirect_uri];
NSURL *url = [NSURL URLWithString:url_string];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[self.webView loadRequest:request];
}
-(IBAction)getText:(id)sender{
NSLog(#"%#",[webView stringByEvaluatingJavaScriptFromString:#"document.documentElement.outerHTML"]);
}
- (void)webViewDidFinishLoad:(UIWebView *)_webView {
NSString *url_string = [((_webView.request).URL) absoluteString];
NSLog(#"%#",url_string);
NSRange access_token_range = [url_string rangeOfString:#"access_token="];
//coolio, we have a token, now let's parse it out....
if (access_token_range.length > 0) {
int from_index = access_token_range.location + access_token_range.length;
NSString *access_token = [url_string substringFromIndex:from_index];
NSLog(#"access_token: %#", access_token);
htmldata=[webView stringByEvaluatingJavaScriptFromString:#"document.documentElement.outerHTML"];
NSLog(#"%#",htmldata);
NSLog(#"%#",url_string);
NSArray *arr1=[htmldata componentsSeparatedByString:#"<title>"];
NSString *data=[arr1 objectAtIndex:1];
NSArray *arr2=[data componentsSeparatedByString:#"</title>"];
value=[[NSString alloc]initWithString:[arr2 objectAtIndex:0]];
NSLog(#"%#",value);
if([value isEqualToString:#"Success"])
{
MainScreenController *C = [[MainScreenController alloc]init];
[self.navigationController pushViewController:C animated:YES];
[C release];
}
}
}
thanks