我正在通过Accounts Framework整合facebook，我搜索并找到了一些方法来实现它。它是第一次工作，但后来显示在日志下面，没有提供任何信息。
日志：
Dictionary contains: {
error = {
code = 2500;
message = "An active access token must be used to query information about the current user.";
type = OAuthException;
};
}
我使用的代码
ACAccountStore *_accountStore=[[ACAccountStore alloc] init];;
ACAccountType *facebookAccountType = [_accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];
// We will pass this dictionary in the next method. It should contain your Facebook App ID key,
// permissions and (optionally) the ACFacebookAudienceKey
NSArray * permissions = @[@"email"];
NSDictionary *options = @{ACFacebookAppIdKey :@"my app id",
ACFacebookPermissionsKey :permissions,
ACFacebookAudienceKey:ACFacebookAudienceFriends};
// Request access to the Facebook account.
// The user will see an alert view when you perform this method.
[_accountStore requestAccessToAccountsWithType:facebookAccountType
options:options
completion:^(BOOL granted, NSError *error) {
if (granted)
{
// At this point we can assume that we have access to the Facebook account
NSArray *accounts = [_accountStore accountsWithAccountType:facebookAccountType];
// Optionally save the account
[_accountStore saveAccount:[accounts lastObject] withCompletionHandler:nil];
//NSString *uid = [NSString stringWithFormat:@"%@", [[_accountStore valueForKey:@"properties"] valueForKey:@"uid"]] ;
NSURL *requestURL = [NSURL URLWithString:[@"https://graph.facebook.com" stringByAppendingPathComponent:@"me"]];
SLRequest *request = [SLRequest requestForServiceType:SLServiceTypeFacebook
requestMethod:SLRequestMethodGET
URL:requestURL
parameters:nil];
request.account = [accounts lastObject];
[request performRequestWithHandler:^(NSData *data,
NSHTTPURLResponse *response,
NSError *error) {
if(!error){
NSDictionary *list =[NSJSONSerialization JSONObjectWithData:data
options:kNilOptions error:&error];
NSLog(@"Dictionary contains: %@", list );
userName=[list objectForKey:@"name"];
NSLog(@"username %@",userName);
userEmailID=[list objectForKey:@"email"];
NSLog(@"userEmailID %@",userEmailID);
userBirthday=[list objectForKey:@"birthday"];
NSLog(@"userBirthday %@",userBirthday);
userLocation=[[list objectForKey:@"location"] objectForKey:@"name"];
NSLog(@"userLocation %@",userLocation);
}
else{
//handle error gracefully
}
}];
}
else
{
NSLog(@"Failed to grant access\n%@", error);
}
}];
任何线索的朋友出了什么问题......谢谢。
答案 0 :(得分：14)
问题在于，当我在设备内更改我的Facebook设置时，访问令牌已超时。因此，如果您收听ACAccountStoreDidChangeNotification，则可以调用renewCredentialsForAccount：以提示用户进行许可。
以下代码正在运行并在字典中获取用户信息。
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(accountChanged) name:ACAccountStoreDidChangeNotification object:nil];
}
-(void)getUserInfo
{
self.accountStore = [[ACAccountStore alloc]init];
ACAccountType *FBaccountType= [self.accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];
NSString *key = @"your_app_id";
NSDictionary *dictFB = [NSDictionary dictionaryWithObjectsAndKeys:key,ACFacebookAppIdKey,@[@"email"],ACFacebookPermissionsKey, nil];
[self.accountStore requestAccessToAccountsWithType:FBaccountType options:dictFB completion:
^(BOOL granted, NSError *e) {
if (granted) {
NSArray *accounts = [self.accountStore accountsWithAccountType:FBaccountType];
//it will always be the last object with single sign on
self.facebookAccount = [accounts lastObject];
NSLog(@"facebook account =%@",self.facebookAccount);
[self get];
} else {
//Fail gracefully...
NSLog(@"error getting permission %@",e);
}
}];
}
-(void)accountChanged:(NSNotification *)notif//no user info associated with this notif
{
[self attemptRenewCredentials];
}
-(void)attemptRenewCredentials{
[self.accountStore renewCredentialsForAccount:(ACAccount *)self.facebookAccount completion:^(ACAccountCredentialRenewResult renewResult, NSError *error){
if(!error)
{
switch (renewResult) {
case ACAccountCredentialRenewResultRenewed:
NSLog(@"Good to go");
[self get];
break;
case ACAccountCredentialRenewResultRejected:
NSLog(@"User declined permission");
break;
case ACAccountCredentialRenewResultFailed:
NSLog(@"non-user-initiated cancel, you may attempt to retry");
break;
default:
break;
}
}
else{
//handle error gracefully
NSLog(@"error from renew credentials%@",error);
}
}];
}
-(void)get
{
NSURL *requestURL = [NSURL URLWithString:@"https://graph.facebook.com/me"];
SLRequest *request = [SLRequest requestForServiceType:SLServiceTypeFacebook
requestMethod:SLRequestMethodGET
URL:requestURL
parameters:nil];
request.account = self.facebookAccount;
[request performRequestWithHandler:^(NSData *data,
NSHTTPURLResponse *response,
NSError *error) {
if(!error)
{
NSDictionary *list =[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
NSLog(@"Dictionary contains: %@", list );
}
else{
//handle error gracefully
NSLog(@"error from get%@",error);
//attempt to revalidate credentials
}
}];
self.accountStore = [[ACAccountStore alloc]init];
ACAccountType *FBaccountType= [self.accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];
NSString *key = @"your_app_id";
NSDictionary *dictFB = [NSDictionary dictionaryWithObjectsAndKeys:key,ACFacebookAppIdKey,@[@"friends_videos"],ACFacebookPermissionsKey, nil];
[self.accountStore requestAccessToAccountsWithType:FBaccountType options:dictFB completion:
^(BOOL granted, NSError *e) {}];
}
答案 1 :(得分：1)
你需要创建会话
[FBSession openActiveSessionWithReadPermissions:permissions
allowLoginUI:YES
completionHandler:^(FBSession *session, FBSessionState status, NSError *error){
if (session.isOpen) {
switch (status) {
case FBSessionStateOpen:
// here you get the token
NSLog(@"%@", session.accessToken);
break;
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
[[FBSession activeSession] closeAndClearTokenInformation];
break;
default:
break;
} // switch
}];
答案 2 :(得分：1)
请提供您的代码的更多详细信息...您的代码似乎没有会话..您必须拥有有效的会话..并且accessToken对于每个用户ID都是唯一的...在您的情况下我认为会话是没有..它可以知道你的访问令牌。所以，你得到这个错误...如果你想了解更多关于访问令牌..检查facebook演示项目与sdk ..你也可以通过这个.. http://developers.facebook.com/docs/concepts/login/access-tokens-and-types/