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I have found a services from Google which provides to access to Google APIs for various Google Services. I could set up a project in iPhone and create API access for iOS applications (via OAuth2.0) and native applications. I wanted to use the native API for my iPhone app. It API gives me email,fullname,firstname,lastname,google_id,gender,dob,profile_image. How do I use these in my iPhone Application, Any sample apps, snippets available?
Please help me.
Here is my code :
-(void) loadGmail_Login
{
NSString *keychainItemName = nil;
if ([self shouldSaveInKeychain]) {
keychainItemName = kKeychainItemName;
}
// For GTM applications, the scope is available as
NSString *scope = @"http://www.google.com/m8/feeds/";
// ### Important ###
// GTMOAuthViewControllerTouch is not designed to be reused. Make a new
// one each time you are going to show it.
// Display the autentication view.
GTMOAuthAuthentication *auth;
auth = [GTMOAuthViewControllerTouch authForGoogleFromKeychainForName:kKeychainItemName];
GTMOAuthViewControllerTouch *viewController = [[[GTMOAuthViewControllerTouch alloc]
initWithScope:scope
language:nil
appServiceName:keychainItemName
delegate:self
finishedSelector:@selector(viewController:finishedWithAuth:error:)] autorelease];
// You can set the title of the navigationItem of the controller here, if you want.
// Optional: display some html briefly before the sign-in page loads
NSString *html = @"<html><body bgcolor=silver><div align=center>Loading sign-in page...</div></body></html>";
[viewController setInitialHTMLString:html];
[[self navigationController] pushViewController:viewController animated:YES];
}
- (void)viewController:(GTMOAuthViewControllerTouch *)viewController
finishedWithAuth:(GTMOAuthAuthentication *)auth
error:(NSError *)error
{
if (error != nil)
{
// Authentication failed (perhaps the user denied access, or closed the
// window before granting access)
NSLog(@"Authentication error: %@", error);
NSData *responseData = [[error userInfo] objectForKey:@"data"]; // kGTMHTTPFetcherStatusDataKey
if ([responseData length] > 0) {
// show the body of the server's authentication failure response
NSString *str = [[[NSString alloc] initWithData:responseData
encoding:NSUTF8StringEncoding] autorelease];
NSLog(@"%@", str);
}
[self setAuthentication:nil];
}
else
{
// save the authentication object
[self setAuthentication:auth];
// Just to prove we're signed in, we'll attempt an authenticated fetch for the
// signed-in user
[self doAnAuthenticatedAPIFetch];
}
}
- (void)doAnAuthenticatedAPIFetch
{
NSString *urlStr;
// Google Contacts feed
//
// https://www.googleapis.com/oauth2/v2/userinfo
urlStr = @"http://www.google.com/m8/feeds/contacts/default/thin";
NSURL *url = [NSURL URLWithString:urlStr];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[mAuth authorizeRequest:request];
NSError *error = nil;
NSURLResponse *response = nil;
NSData *data = [NSURLConnection sendSynchronousRequest:request
returningResponse:&response
error:&error];
if (data) {
// API fetch succeeded
NSString *str = [[[NSString alloc] initWithData:data
encoding:NSUTF8StringEncoding] autorelease];
NSLog(@"API response: %@", str);
GGCXml_Adaptor *localAlphabetXMLParser = [[GGCXml_Adaptor alloc] init];
[localAlphabetXMLParser processBooksXML:data];
[localAlphabetXMLParser release];
// [self updateUI];
} else {
// fetch failed
NSLog(@"API fetch error: %@", error);
}
}
- (void)setAuthentication:(GTMOAuthAuthentication *)auth {
[mAuth autorelease];
mAuth = [auth retain];
}
996
OAuth2 lets users grant third-party apps access to their web resources, without sharing their passwords, through a security object known as an access token. OAuth2 works with the following four actors: authorization server: responsible for authentication and authorization; provides the access token.
First you will need to get token from Google API, For this 1st step you will have to follow this tutorial and in the end of this link there is whole source code for iOS for getting token from google API
http://technogerms.com/login-with-google-using-oauth-2-0-for-ios-xcode-objective-c/
Then in the next step you have to send that token to Google API to request user Data, I just needed the first step So I am sharing my searchings
133
1. Tutorial Reference: http://technogerms.com/login-with-google-using-oauth-2-0-for-ios-xcode-objective-c/
2. Api Reference : https://code.google.com/apis/console/
3. Source code: https://github.com/emysa341/Login-with-gmail-google-g--using-oath-2.0-protocol/archive/master.zip
32
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