我正在驗證用戶身份以使用他與之關聯的Google帳戶。問題在於,每當用戶通過我的應用程序登錄時,即使我點擊了先前測試中的「允許訪問」,Google的身份驗證視圖中也始終顯示「允許訪問」。這是正常的還是我在做我的代碼錯誤?請幫助我們。iOS:Google身份驗證代碼
我用下面的代碼洛在出:
- (IBAction)signIn:(id)sender {
if(!isSignedIn){
[self signOutFromAll];
NSString *keychainItemName = nil;
// save keychain
keychainItemName = kKeychainItemName;
NSString *scope = @"https://www.googleapis.com/auth/plus.me";
NSString *clientID = kClientID;
NSString *clientSecret = kClientSecret;
SEL finishedSel = @selector(viewController:finishedWithAuth:error:);
GTMOAuth2ViewControllerTouch *viewController;
viewController = [GTMOAuth2ViewControllerTouch controllerWithScope:scope
clientID:clientID
clientSecret:clientSecret
keychainItemName:keychainItemName
delegate:self
finishedSelector:finishedSel];
[[self navigationController]pushViewController:viewController animated:YES];
} else {
[self displayAlertWithMessage:@"Currently Signed in."];
} }
- (IBAction)signOut:(id)sender {
[self signOutFromAll];
[self displayAlertWithMessage:@"Signed out."]; }
這是代表:
- (void)viewController:(GTMOAuth2ViewControllerTouch *)viewController
finishedWithAuth:(GTMOAuth2Authentication *)auth
error:(NSError *)error{
if(error != nil){
// Authentication failed...
NSLog(@"Authentication error: %@", error);
NSData *responseData = [[error userInfo] objectForKey:@"data"];
if([responseData length] > 0)
NSLog(@"%@", [[[NSString alloc]initWithData:responseData encoding:NSUTF8StringEncoding]autorelease]);
self.auth = nil;
} else {
// Authentication succeeded...
isSignedIn = YES;
self.auth = auth;
}
}
而且awakeFromNib:
- (void)awakeFromNib{
// Fill in the Client ID and Client Secret text fields
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
// First, we'll try to get the saved Google authentication, if any, from the keychain
// Normal applications will hardcode in their client ID and client secret,
// But the sample app allows the user to enter them in a text field, and saves them in the preferences
NSString *clientID = [defaults stringForKey:kGoogleClientIDKey];
NSString *clientSecret = [defaults stringForKey:kGoogleClientSecretKey];
GTMOAuth2Authentication *auth;
auth = [GTMOAuth2ViewControllerTouch authForGoogleFromKeychainForName:kKeychainItemName
clientID:clientID
clientSecret:clientSecret];
if (auth.canAuthorize) {
// There is saved google authentication
// self.serviceSegments.selectedSegmentIndex = 0;
}
// Save the authentication object, which holds the auth tokens
self.auth = auth;
[self setAuth:auth];
isSignedIn = self.auth.canAuthorize;
}
通過我參考的方式對於這些代碼是在這個鏈接:http://code.google.com/p/gtm-oauth2/wiki/Introduction#Using_the_OAuth_2_Controllers
雖然clientID,clientSecret,keychainItemName是正確的,但我得到了「GTMOAuth2ViewControllerTouch * viewController」中的nil值。你可以解釋這裏有什麼問題嗎? – Ponting 2013-06-17 11:31:25