我是 iPhone 开发的新手。我正在做一个应用程序，其中用户通过 Facebook 进行了 2 次登录，一旦他提交了他的凭据并点击了登录按钮，我必须从 Facebook 获取名字、电子邮件和性别等详细信息，并且在获取用户之后必须被引导到应用程序的注册页面填写详细信息，我需要此应用程序与 iPhone 4,4s 和 5 兼容。
我尝试使用 Facebook Graph API 执行此操作，但无法获得，因此任何人都可以帮助我。
提前致谢。
【问题讨论】：
标签： iphone ios objective-c facebook
请参考以下链接，以便您有所了解。
https://www.parse.com/tutorials/integrating-facebook-in-ios
Facebook iOS 6 - get user info
get Facebook user profile data after getting access token in iOS 5
Display a user's profile name and image through the Facebook instance for iOS
How to cache Facebook User Info with Facebook Login in IOS App
How do I get the full User object using Facebook Graph API and facebook ios sdk?
希望对你有帮助....
【讨论】：
【讨论】：
您必须使用图形路径来获取用户信息。
-(void)getEmailId
{
[facebook requestWithGraphPath:@"me" andDelegate:self];
}
- (void)openSession
{
if (internetActive) {
NSArray *permissions=[NSArray arrayWithObjects:@"read_stream",@"email",nil];
[FBSession openActiveSessionWithReadPermissions:permissions allowLoginUI:YES completionHandler:
^(FBSession *session,
FBSessionState state, NSError *error) {
[self sessionStateChanged:session state:state error:error];
}];
}else
{
UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"" message:@"Internet Not Connected" delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
[alert show];
}
}
#pragma mark- request delegate methods
- (void)request:(FBRequest *)request didLoad:(id)result
{
NSLog(@"request did load successfully....");
// __block NSDictionary *dictionary=[[NSDictionary alloc] init];
if ([result isKindOfClass:[NSDictionary class]]) {
NSDictionary* json = result;
NSLog(@"email id is %@",[json valueForKey:@"email"]);
NSLog(@"json is %@",json);
[[NSUserDefaults standardUserDefaults] setValue:[json valueForKey:@"email"] forKey:@"fbemail"];
[self.viewController login:YES];
}
}
- (void)request:(FBRequest *)request didFailWithError:(NSError *)error
{
UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"" message:@"Server not responding.." delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
[alertView show];
[self fblogout];
[self showLoginView];
NSLog(@"request did fail with error");
}
- (void)sessionStateChanged:(FBSession *)session
state:(FBSessionState) state
error:(NSError *)error
{
switch (state) {
case FBSessionStateOpen: {
//state open action
}
// Initiate a Facebook instance
facebook = [[Facebook alloc]
initWithAppId:FBSession.activeSession.appID
andDelegate:nil];
// Store the Facebook session information
facebook.accessToken = FBSession.activeSession.accessToken;
facebook.expirationDate = FBSession.activeSession.expirationDate;
if (![[NSUserDefaults standardUserDefaults] valueForKey:@"fbemail"]) {
[MBProgressHUD showHUDAddedTo:self.viewController.view animated:YES];
[self getEmailId];
}
break;
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
// Once the user has logged in, we want them to
// be looking at the root view.
[self.navController popToRootViewControllerAnimated:NO];
[FBSession.activeSession closeAndClearTokenInformation];
facebook = nil;
[self showLoginView];
break;
default:
break;
}
[[NSNotificationCenter defaultCenter]
postNotificationName:FBSessionStateChangedNotification
object:session];
if (error) {
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle:@"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alertView show];
}
}
【讨论】：
您可以使用以下代码来做到这一点：
[FBSession openActiveSessionWithReadPermissions:@[@"email",@"user_location",@"user_birthday",@"user_hometown"]
allowLoginUI:YES
completionHandler:^(FBSession *session, FBSessionState state, NSError *error) {
switch (state) {
case FBSessionStateOpen:
[[FBRequest requestForMe] startWithCompletionHandler:^(FBRequestConnection *connection, NSDictionary<FBGraphUser> *user, NSError *error) {
if (error) {
NSLog(@"error:%@",error);
}
else
{
// retrive user's details at here as shown below
NSLog(@"FB user first name:%@",user.first_name);
NSLog(@"FB user last name:%@",user.last_name);
NSLog(@"FB user birthday:%@",user.birthday);
NSLog(@"FB user location:%@",user.location);
NSLog(@"FB user username:%@",user.username);
NSLog(@"FB user gender:%@",[user objectForKey:@"gender"]);
NSLog(@"email id:%@",[user objectForKey:@"email"]);
NSLog(@"location:%@", [NSString stringWithFormat:@"Location: %@\n\n",
user.location[@"name"]]);
}
}];
break;
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
[FBSession.activeSession closeAndClearTokenInformation];
break;
default:
break;
}
} ];
别忘了在你的代码中导入FacebookSDK/FacebookSDK.h。
编辑：Facebook SDK v4 更新（2015 年 4 月 23 日）
现在，Facebook 发布了新的 SDK，并进行了重大更改。其中不推荐使用 FBSession 类。因此建议所有用户迁移到新的 sdk 和 API。
下面我已经提到，我们如何通过 Facebook SDK v4 获取用户详细信息：
if ([FBSDKAccessToken currentAccessToken]) {
[[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:nil]
startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {
if (!error) {
NSLog(@”fetched user:%@”, result);
}
}];
}
但在获取用户详细信息之前，我们必须在代码中集成新的 Facebook 登录信息，如 Documentation here 中所述。
Here 是 SDK v4 的变更日志。我建议通过它进行更新。
【讨论】：
/me 并填写parameters 归档{ @"fields": @"id,name,email"}。
FBRequest *request = [FBRequest requestForMe];
[request startWithCompletionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
if (!error) {
// handle successful response
} else if ([error.userInfo[FBErrorParsedJSONResponseKey][@"body"][@"error"][@"type"] isEqualToString:@"OAuthException"]) { // Since the request failed, we can check if it was due to an invalid session
NSLog(@"The facebook session was invalidated");
[self logoutButtonTouchHandler:nil];
} else {
NSLog(@"Some other error: %@", error);
}
}];
【讨论】：
添加 info.plist 文件：
- (IBAction)btn_fb:(id)sender
{
if (!FBSession.activeSession.isOpen)
{
NSArray *_fbPermissions = @[@"email",@"publish_actions",@"public_profile",@"user_hometown",@"user_birthday",@"user_about_me",@"user_friends",@"user_photos",];
[FBSession openActiveSessionWithReadPermissions:_fbPermissions allowLoginUI:YES completionHandler:^(FBSession *session,FBSessionState state, NSError *error)
{
if (error)
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error" message:error.localizedDescription delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alertView show];
}
else if(session.isOpen)
{
[self btn_fb:sender];
}
}];
return;
}
[FBRequestConnection startWithGraphPath:@"me" parameters:[NSDictionary dictionaryWithObject:@"cover,picture.type(large),id,name,first_name,last_name,gender,birthday,email,location,hometown,bio,photos" forKey:@"fields"] HTTPMethod:@"GET" completionHandler:^(FBRequestConnection *connection, id result, NSError *error)
{
{
if (!error)
{
if ([result isKindOfClass:[NSDictionary class]])
{
NSLog(@"%@",result);
}
}
}
}];
}
【讨论】：
Facebook 目前已将其 SDK 版本更新为 4.x。要获取用户的个人资料信息，您需要在登录成功后显式调用图形 API（请求所需权限）。
FBSDKGraphRequest *request = [[FBSDKGraphRequest alloc]
initWithGraphPath:@"/me"
parameters:@{ @"fields": @"id,name,email"}
HTTPMethod:@"GET"];
[request startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {
// Insert your code here
}];
【讨论】：