在应用程序相册上发布带有标题的图片，无论它是否存在，都使用适用于iOS的Facebook SDK 3.1

Question

使用toblerpwn答案，我设法将图片发布到应用程序相册中。但这仅在已经创建应用程序相册时才有效（因为我需要指定相册 ID）。

另一方面，requestForUploadPhoto 便利方法创建应用程序相册（如果它不存在）并发布图片。

那么有人可以帮我弄清楚如何合并这两个问题吗？

Answer 1

感谢@deepak-lakshmanan，我设法解决了我的问题。

这个想法是使用/USER_ID/photos而不是/ALBUM_ID/photos发布到应用程序相册;这样，如果相册不存在，就会自动创建相册。

因此，要遵循的步骤是：

• 获取发布权限
• 然后使用 /me 检索用户 ID
• 最后将图片发布到应用程序相册中，/USER_ID/photos

这是我的代码，以防有人为此苦苦挣扎，我使用的是适用于iOS的Facebook SDK 3.1：

- (void)sendRequestFacebookPublishPermission {
    NSArray *permissions = [[NSArray alloc] initWithObjects:@"publish_stream", nil];
    if(!FBSession.activeSession.isOpen ) {
        [FBSession openActiveSessionWithPublishPermissions:permissions
                                           defaultAudience:FBSessionDefaultAudienceFriends
                                              allowLoginUI:YES
                                         completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
                                             [self requestFacebookPublishPermissionCompleted:session status:status error:error];
                                         }];
    } else if ([FBSession.activeSession.permissions indexOfObject:@"publish_actions"] == NSNotFound) {
        [FBSession.activeSession reauthorizeWithPublishPermissions:permissions
                                                   defaultAudience:FBSessionDefaultAudienceFriends
                                                 completionHandler:^(FBSession *session, NSError *error) {
                                                     [self requestFacebookPublishPermissionCompleted:session status:FBSessionStateOpen error:error];
                                                 }];
    } else {
        [self sendRequesFacebooktUserInfo];
    }
}
- (void)requestFacebookPublishPermissionCompleted:(FBSession *)session
                                            status:(FBSessionState)status
                                             error:(NSError *)error {
    if (error) {
        DLog(@"%@", error.localizedDescription);
    } else {
        [self sendRequesFacebooktUserInfo];
    }
}
-(void)sendRequesFacebooktUserInfo {
    FBRequestConnection *newConnection = [[FBRequestConnection alloc] init];
     // output the results of the request
    FBRequestHandler handler = ^(FBRequestConnection *connection, id result, NSError *error) {
        [self requestFacebookUserInfoCompleted:connection result:result error:error];
    };
    // create the request object, using the fbid as the graph path
    FBRequest *request = [[FBRequest alloc] initWithSession:FBSession.activeSession graphPath:@"me"];
    // add the request to the connection object
    [newConnection addRequest:request completionHandler:handler];
    // if there's an outstanding connection, just cancel
    [self.requestConnection cancel];
    // keep track of our connection, and start it
    self.requestConnection = newConnection;
    [newConnection start];
}
- (void)requestFacebookUserInfoCompleted:(FBRequestConnection *)connection
                                result:(id)result
                                 error:(NSError *)error {
    // not the completion we were looking for...
    if (self.requestConnection && connection != self.requestConnection) {
        return;
    }
    // clean this up, for posterity
    self.requestConnection = nil;
    if (error) {
        DLog(@"%@", error.localizedDescription);
    } else {
        FBGraphObject *dictionary = (FBGraphObject *)result;
        NSString* userId = (NSString *)[dictionary objectForKey:@"id"];
        [self sendRequestFacebookPublishOnAlbum:userId];
    }
}
- (void)sendRequestFacebookPublishOnAlbum:(NSString*)fbId {
    UIImage *imageToPost = /* get the image you need*/ ;
    /*
    //--- Facebook SDK convenience method : requestForUploadPhoto won't let me post image description ---//
    FBRequestConnection *newConnection = [FBRequestConnection startForUploadPhoto:screenshot completionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
        [self requestPostCardOnFacebookCompleted:connection result:result error:error];
    }];
    // if there's an outstanding connection, just cancel
    [self.requestConnection cancel];
    // keep track of our connection, and start it
    self.requestConnection = newConnection;
    //-----------------------------------------------------------------------------------------------------//
     */

    //--- http://stackoverflow.com/questions/12486852/facebook-ios-sdk-cannot-specify-an-album-using-fbrequests-requestforuploadphot ---//
    NSString *messagePublie = laCarte.message;
    NSDictionary *parameters = [NSDictionary dictionaryWithObjectsAndKeys:
                                screenshot, @"picture",
                                messagePublie , @"name",
                                nil] ;
    FBRequestConnection *newConnection = [[FBRequestConnection alloc] init];
    FBRequestHandler handler = ^(FBRequestConnection *connection, id result, NSError *error) {
        [self requestFacebookPublishOnAlbumCompleted:connection result:result error:error];
    };
    NSString *graphPath = [NSString stringWithFormat:@"%@/photos",fbId];
    FBRequest *request = [[FBRequest alloc] initWithSession:FBSession.activeSession graphPath:graphPath parameters:parameters HTTPMethod:@"POST"];
    [newConnection addRequest:request completionHandler:handler];
    // if there's an outstanding connection, just cancel
    [self.requestConnection cancel];
    // keep track of our connection, and start it
    self.requestConnection = newConnection;
    [newConnection start];
}
- (void)requestFacebookPublishOnAlbumCompleted:(FBRequestConnection *)connection result:(id)result error:(NSError *)error {
    if (self.requestConnection && connection != self.requestConnection) {
        return;
    }
    // clean this up, for posterity
    self.requestConnection = nil;
    if (error) {
        DLog(@"%@", error.localizedDescription);
    } else {
        DLog(@"%@", "Done");
    }
}