FBSDKLoginManager Class Reference
Inherits from | NSObject |
Declared in | FBSDKLoginManager.h |
Overview
FBSDKLoginManager
works directly with [FBSDKAccessToken currentAccessToken]
and
sets the “currentAccessToken” upon successful authorizations (or sets nil
in case of logOut
).
You should check [FBSDKAccessToken currentAccessToken]
before calling logIn* to see if there is
a cached token available (typically in your viewDidLoad).
If you are managing your own token instances outside of “currentAccessToken”, you will need to set “currentAccessToken” before calling logIn* to authorize further permissions on your tokens.
Properties
Class Methods
renewSystemCredentials:
Issues an asynchronous renewCredentialsForAccount call to the device’s Facebook account store.
+ (void)renewSystemCredentials:(void ( ^ ) ( ACAccountCredentialRenewResult result , NSError *error ))handler
Parameters
- handler
The completion handler to call when the renewal is completed. This can be invoked on an arbitrary thread.
Discussion
This can be used to explicitly renew account credentials and is provided as a convenience wrapper around
[ACAccountStore renewCredentialsForAccount:completion]
. Note the method will not issue the renewal call if the the
Facebook account has not been set on the device, or if access had not been granted to the account (though the handler
wil receive an error).
If the [FBSDKAccessToken currentAccessToken]
was from the account store, a succesful renewal will also set
a new “currentAccessToken”.
Declared In
FBSDKLoginManager.h
Instance Methods
logInWithPublishPermissions:fromViewController:handler:
Logs the user in or authorizes additional permissions.
- (void)logInWithPublishPermissions:(NSArray *)permissions fromViewController:(UIViewController *)fromViewController handler:(FBSDKLoginManagerRequestTokenHandler)handler
Parameters
- permissions
the optional array of permissions. Note this is converted to NSSet and is only an NSArray for the convenience of literal syntax.
- fromViewController
the view controller to present from. If nil, the topmost view controller will be automatically determined as best as possible.
- handler
the callback.
Discussion
Use this method when asking for publish permissions. You should only ask for permissions when they are needed and explain the value to the user. You can inspect the result.declinedPermissions to also provide more information to the user if they decline permissions.
This method will present UI the user. You typically should check if [FBSDKAccessToken currentAccessToken]
already contains the permissions you need before asking to reduce unnecessary app switching. For example,
you could make that check at viewDidLoad.
Declared In
FBSDKLoginManager.h
logInWithPublishPermissions:handler:
use logInWithPublishPermissions:fromViewController:handler: instead (Deprecated: use logInWithPublishPermissions:fromViewController:handler: instead)
- (void)logInWithPublishPermissions:(NSArray *)permissions handler:(FBSDKLoginManagerRequestTokenHandler)handler
Declared In
FBSDKLoginManager.h
logInWithReadPermissions:fromViewController:handler:
Logs the user in or authorizes additional permissions.
- (void)logInWithReadPermissions:(NSArray *)permissions fromViewController:(UIViewController *)fromViewController handler:(FBSDKLoginManagerRequestTokenHandler)handler
Parameters
- permissions
the optional array of permissions. Note this is converted to NSSet and is only an NSArray for the convenience of literal syntax.
- fromViewController
the view controller to present from. If nil, the topmost view controller will be automatically determined as best as possible.
- handler
the callback.
Discussion
Use this method when asking for read permissions. You should only ask for permissions when they are needed and explain the value to the user. You can inspect the result.declinedPermissions to also provide more information to the user if they decline permissions.
This method will present UI the user. You typically should check if [FBSDKAccessToken currentAccessToken]
already contains the permissions you need before asking to reduce unnecessary app switching. For example,
you could make that check at viewDidLoad.
Declared In
FBSDKLoginManager.h
logInWithReadPermissions:handler:
use logInWithReadPermissions:fromViewController:handler: instead (Deprecated: use logInWithReadPermissions:fromViewController:handler: instead)
- (void)logInWithReadPermissions:(NSArray *)permissions handler:(FBSDKLoginManagerRequestTokenHandler)handler
Declared In
FBSDKLoginManager.h