我是iOS开发的新手，我试图从Facebook获取用户详细信息。这是我使用的代码，但是当它调用我的应用程序时挂起。在下面的代码中，当我无法在设置＆gt; Facebook中使用Facebook登录设备时，它无法工作。请帮帮我。
-(Void)LoginWithFB {
ACAccountStore *accountStore = [[ACAccountStore alloc] init];
ACAccountType *facebookAccountType = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];
SLComposeViewController *vc = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];
id options = @{
ACFacebookAppIdKey: @"1501842240102594",
ACFacebookPermissionsKey: @[ @"email"],
};
[accountStore requestAccessToAccountsWithType:facebookAccountType
options:options
completion:^(BOOL granted, NSError *error) {
if (granted)
{
// Return back logined facebook Account
ACAccount *fbAccount = [[accountStore accountsWithAccountType:facebookAccountType] lastObject];
// Do What you want...
// Request friend list
//http://graph.facebook.com/000000000/picture
SLRequest *friendsListRequest = [SLRequest requestForServiceType:SLServiceTypeFacebook
requestMethod:SLRequestMethodGET
URL: [[NSURL alloc] initWithString:@"https://graph.facebook.com/me"]parameters:nil];
friendsListRequest.account = fbAccount;
[friendsListRequest performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) {
// Parse response JSON
NSError *jsonError = nil;
NSDictionary *dictionaryForFacebookData = [NSJSONSerialization JSONObjectWithData:responseData
options:NSJSONReadingAllowFragments
error:&jsonError];
// NSString *proficePicture = [NSString stringWithFormat:@"http://graph.facebook.com/415790901901979/picture"];
NSMutableDictionary *dictionaryParameter = [[NSMutableDictionary alloc]init];
[dictionaryParameter setObject:@"facebook" forKey:@"registrationsource"];
[dictionaryParameter setObject:[dictionaryForFacebookData objectForKey:@"first_name"] forKey:@"firstname"];
[dictionaryParameter setObject:[dictionaryForFacebookData objectForKey:@"last_name"] forKey:@"lastname"];
[dictionaryParameter setObject:[dictionaryForFacebookData objectForKey:@"email"] forKey:@"email"];
[dictionaryParameter setObject:@"yes" forKey:@"status"];
WebServiceClass *objectToCallApi = [[WebServiceClass alloc]init];
NSDictionary *dictionaryReturnValue = [objectToCallApi callAPIWebservice:dictionaryParameter stringURL:[[Singelton sharedInstance] passMethodName:@"login"]];
if (![[dictionaryReturnValue objectForKey:@"success"] isEqualToString:@"1"])
{
[UIAlertView showWithTitle:ALERT_TITLE message:[dictionaryReturnValue objectForKey:@"message"] handler:^(UIAlertView *alertview, NSInteger buttonindex){
}];
}
if ([[dictionaryReturnValue objectForKey:@"success"] isEqualToString:@"1"])
{
APP_DELEGATE.intTabbarNumber = 0;
NSMutableDictionary *data =[[NSMutableDictionary alloc]init];
[data setObject:[NSString stringWithFormat:@"%@ %@",[dictionaryReturnValue objectForKey:@"firstname"], [dictionaryReturnValue objectForKey:@"lastname"]] forKey:@"fullname"];
[data setObject:dictionaryReturnValue[@"username"] forKey:@"username"];
[data setObject:dictionaryReturnValue[@"email"] forKey:@"email"];
[data setObject:dictionaryReturnValue[@"userid"] forKey:@"userid"];
NSMutableArray *arrayOfExistingUser;
if([[NSUserDefaults standardUserDefaults] valueForKey:@"Users"] != nil)
{
arrayOfExistingUser = [[[NSUserDefaults standardUserDefaults] valueForKey:@"Users"] mutableCopy];
for (int i=0; i<arrayOfExistingUser.count; i++)
{
if ([[[arrayOfExistingUser objectAtIndex:i]objectForKey:@"userid"] isEqualToString:[data objectForKey:@"userid"]])
{
[arrayOfExistingUser removeObjectAtIndex:i];
}
}
}
else
{
arrayOfExistingUser = [[NSMutableArray alloc]init];
}
[arrayOfExistingUser addObject:data];
[[NSUserDefaults standardUserDefaults] setObject:arrayOfExistingUser forKey:@"Users"];
[[NSUserDefaults standardUserDefaults] synchronize];
[[NSUserDefaults standardUserDefaults]setObject:dictionaryReturnValue forKey:@"dictionaryForLoginData"];
if ([[dictionaryReturnValue objectForKey:@"role"] isEqualToString:@"teacher"])
{
[APP_DELEGATE createTabbarInstanceForTeacher];
}
else if ([[dictionaryReturnValue objectForKey:@"role"] isEqualToString:@"student"])
{
[APP_DELEGATE createTabbarInstanceForstudent];
}
else if ([[dictionaryReturnValue objectForKey:@"role"] isEqualToString:@"parent"])
{
[APP_DELEGATE createTabbarInstanceForParent];
}
}
}];
}
else
{
SLComposeViewController *controller = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];
[controller.view resignFirstResponder];
controller.view.hidden = YES;
[self presentViewController:controller animated:NO completion:nil];
}
}];
}
答案 0 :(得分：0)
在您的方法签名中 - （Void）LoginWithFB ; Void 不是类型，但 void 是。这可能是问题所在。
答案 1 :(得分：0)
in .h file
#import <Accounts/Accounts.h>
#import <Social/Social.h>
@property (nonatomic, strong) ACAccountStore *accountStore;
@property (nonatomic, strong) ACAccount *facebookAccount;
in .m file
- (void) getuserdetails
{
self.accountStore = [[ACAccountStore alloc]init];
ACAccountType *FBaccountType= nil;
//[self.accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];
if (! FBaccountType) {
FBaccountType = [_accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];
}
NSString *key =kFBAppId;
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];
self.facebookAccount = [accounts lastObject];
NSLog(@"facebook account =%@",self.facebookAccount);
[self get];
}
else
{
NSLog(@"fb error %@",e.description);
dispatch_async(dispatch_get_main_queue(), ^
{
[self performSelectorOnMainThread:@selector(hideLoader) withObject:nil waitUntilDone:YES];
NSLog(@"%@",e.description);
if([e code]== ACErrorAccountNotFound)
{
UIAlertView* alt = [[UIAlertView alloc] initWithTitle:@"Account not found"
message:msgSetUpFBAccount delegate:self cancelButtonTitle:nil otherButtonTitles:@"Ok",nil];
[alt show];
}
else
{
UIAlertView* alt = [[UIAlertView alloc] initWithTitle:msgFBAccessDenied
message:@"" delegate:self cancelButtonTitle:nil otherButtonTitles:@"Ok",nil];
[alt show];
}
});
NSLog(@"error getting permission %@",e);
}
}];
}
-(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)
{
list =[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
NSLog(@"Dictionary contains: %@", list );
if([list objectForKey:@"error"]!=nil)
{
[self attemptRenewCredentials];
}
dispatch_async(dispatch_get_main_queue(),^{
});
}
else
{
[self performSelectorOnMainThread:@selector(hideLoader) withObject:nil waitUntilDone:YES];
NSLog(@"error from get%@",error);
}
}];
}
-(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");
UIAlertView* alt = [[UIAlertView alloc] initWithTitle:@"Access Denied"
message:@"You declined permission" delegate:self cancelButtonTitle:nil otherButtonTitles:@"Ok",nil];
[alt show];
break;
}
case ACAccountCredentialRenewResultFailed:
{
NSLog(@"non-user-initiated cancel, you may attempt to retry");
UIAlertView* alt = [[UIAlertView alloc] initWithTitle:@"Access Denied"
message:@"non-user-initiated cancel, you may attempt to retry" delegate:self cancelButtonTitle:nil otherButtonTitles:@"Ok",nil];
[alt show];
break;
}
default:
break;
}
}
else{
//handle error gracefully
NSLog(@"error from renew credentials%@",error);
}
}];
}