FBSDKGraphRequest - 文档

FBSDKGraphRequest

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Represents a request to the Facebook Graph API.

Discussion:

FBSDKGraphRequest encapsulates the components of a request (the Graph API path, the parameters, error recovery behavior) and should be used in conjunction with FBSDKGraphRequestConnection to issue the request.

Nearly all Graph APIs require an access token. Unless specified, the [FBSDKAccessToken currentAccessToken] is used. Therefore, most requests will require login first (see FBSDKLoginManager in FBSDKLoginKit.framework).

A - start method is provided for convenience for single requests.

By default, FBSDKGraphRequest will attempt to recover any errors returned from Facebook. You can disable this via disableErrorRecovery:.

Inherits from:	`NSObject`
Declared in:	`FBSDKGraphRequest.h`

属性

graphPath

The Graph API endpoint to use for the request, for example "me".

@property (nonatomic,
    copy,
    readonly) NSString *graphPath;

声明语言： FBSDKGraphRequest.h

HTTPMethod

The HTTPMethod to use for the request, for example "GET" or "POST".

@property (nonatomic,
    copy,
    readonly) NSString *HTTPMethod;

声明语言： FBSDKGraphRequest.h

parameters

The request parameters.

@property (nonatomic,
    strong,
    readonly) NSMutableDictionary *parameters;

声明语言： FBSDKGraphRequest.h

tokenString

The access token string used by the request.

@property (nonatomic,
    copy,
    readonly) NSString *tokenString;

声明语言： FBSDKGraphRequest.h

version

The Graph API version to use (e.g., "v2.0")

@property (nonatomic,
    copy,
    readonly) NSString *version;

声明语言： FBSDKGraphRequest.h

实例方法

initWithGraphPath:parameters:

Initializes a new instance that use use [FBSDKAccessToken currentAccessToken].

参数	描述
`graphPath`	The graph path (e.g., @"me").
`parameters`	The optional parameters dictionary.

- (instancetype)

`initWithGraphPath:`	`(NSString *)graphPath`
`parameters:`	`(NSDictionary *)parameters;`

声明语言： FBSDKGraphRequest.h

initWithGraphPath:parameters:HTTPMethod:

Initializes a new instance that use use [FBSDKAccessToken currentAccessToken].

参数	描述
`graphPath`	The graph path (e.g., @"me").
`parameters`	The optional parameters dictionary.
`HTTPMethod`	The optional HTTP method. nil defaults to @"GET".

- (instancetype)

`initWithGraphPath:`	`(NSString *)graphPath`
`parameters:`	`(NSDictionary *)parameters`
`HTTPMethod:`	`(NSString *)HTTPMethod;`

声明语言： FBSDKGraphRequest.h

initWithGraphPath:parameters:tokenString:version:HTTPMethod:

Initializes a new instance.

参数	描述
`graphPath`	The graph path (e.g., @"me").
`parameters`	The optional parameters dictionary.
`tokenString`	The token string to use. Specifying nil will cause no token to be used.
`version`	The optional Graph API version (e.g., @"v2.0"). nil defaults to FBSDK_TARGET_PLATFORM_VERSION.
`HTTPMethod`	The optional HTTP method (e.g., @"POST"). nil defaults to @"GET".

- (instancetype)

`initWithGraphPath:`	`(NSString *)graphPath`
`parameters:`	`(NSDictionary *)parameters`
`tokenString:`	`(NSString *)tokenString`
`version:`	`(NSString *)version`
`HTTPMethod:`	`(NSString *)HTTPMethod`
	`NS_DESIGNATED_INITIALIZER;`

声明语言： FBSDKGraphRequest.h

setGraphErrorRecoveryDisabled:

If set, disables the automatic error recovery mechanism.

参数	描述
`disable`	Whether to disable the automatic error recovery mechanism

- (void) setGraphErrorRecoveryDisabled:(BOOL)disable;

Discussion:

By default, non-batched FBSDKGraphRequest instances will automatically try to recover from errors by constructing a FBSDKGraphErrorRecoveryProcessor instance that re-issues the request on successful recoveries. The re-issued request will call the same handler as the receiver but may occur with a different FBSDKGraphRequestConnection instance.

This will override [FBSDKSettings setGraphErrorRecoveryDisabled:].

声明语言： FBSDKGraphRequest.h

startWithCompletionHandler:

Starts a connection to the Graph API.

参数	描述
`handler`	The handler block to call when the request completes.

- (FBSDKGraphRequestConnection *) startWithCompletionHandler:(FBSDKGraphRequestHandler)handler;

声明语言： FBSDKGraphRequest.h