ios - Facebook 好友请求对话框停止在 UIWebView 上工作

Question

我使用 stackoverflow 上的帖子在 iPhone 上实现了“添加 friend ”对话框:
Facebook friends dialog returns "Unknown method" error ，它是为 Android 实现的，但很容易转换为 iPhone。

直到几天前它停止工作之前它一直运行良好，现在它向我抛出一个错误:

HitMe 发生错误。请稍后再试。
API 错误代码:3
API错误描述:未知方法
错误消息:此显示类型不支持此方法

我尝试在 facebook roadmap 中搜索:https://developers.facebook.com/roadmap/ 但找不到任何提及更改的内容，有没有人遇到过这个问题或知道在 iPhone 上实现“好友请求”对话框的另一种方法？

这是我为实现“好友请求”对话框而对 Facebook 2.0 sdk 所做的更改:

在Facebook.m中的dialog:andParams:andDelegate:方法中我将原来的代码替换为如下代码:

-(void)dialog:(NSString *)action
 andParams:(NSMutableDictionary *)params
 andDelegate:(id <FBDialogDelegate>)delegate {

[_fbDialog release];

NSString *dialogURL;

if ([action isEqualToString:kFriends]) 
{
    dialogURL = [kDialogBaseURLForFriends stringByAppendingString:action];
}
else 
{
    dialogURL = [kDialogBaseURL stringByAppendingString:action];
}

if ([action isEqualToString:kFriends])
{
    [params setObject:@"popup" forKey:@"display"];
}
else 
{
    [params setObject:@"touch" forKey:@"display"];
}

[params setObject:kSDKVersion forKey:@"sdk"];
[params setObject:kRedirectURL forKey:@"redirect_uri"];

if ([action isEqualToString:kLogin]) {
    [params setObject:@"user_agent" forKey:@"type"];
    _fbDialog = [[FBLoginDialog alloc] initWithURL:dialogURL loginParams:params delegate:self];
} else {
    [params setObject:_appId forKey:@"app_id"];
    if ([self isSessionValid]) {
        [params setValue:[self.accessToken stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]
                  forKey:@"access_token"];
        [self extendAccessTokenIfNeeded];
    }

    // by default we show dialogs, frictionless cases may have a hidden view
    BOOL invisible = NO;

    // frictionless handling for application requests
    if ([action isEqualToString:kApprequests]) {        
        // if frictionless requests are enabled
        if (self.isFrictionlessRequestsEnabled) {
            //  1. show the "Don't show this again for these friends" checkbox
            //  2. if the developer is sending a targeted request, then skip the loading screen
            [params setValue:@"1" forKey:@"frictionless"];  
            //  3. request the frictionless recipient list encoded in the success url
            [params setValue:@"1" forKey:@"get_frictionless_recipients"];
        }

        // set invisible if all recipients are enabled for frictionless requests
        id fbid = [params objectForKey:@"to"];
        if (fbid != nil) {
            // if value parses as a json array expression get the list that way
            SBJsonParser *parser = [[[SBJsonParser alloc] init] autorelease];
            id fbids = [parser objectWithString:fbid];
            if (![fbids isKindOfClass:[NSArray class]]) {
                // otherwise seperate by commas (handles the singleton case too)
                fbids = [fbid componentsSeparatedByString:@","];
            }                
            invisible = [self isFrictionlessEnabledForRecipients:fbids];             
        }
    }

    _fbDialog = [[FBDialog alloc] initWithURL:dialogURL
                                       params:params
                              isViewInvisible:invisible
                         frictionlessSettings:_frictionlessRequestSettings 
                                     delegate:delegate];
}

[_fbDialog show];

其中 kFriends 是@"friends"，kDialogBaseURLForFriends 是@"https://facebook.com/dialog/"

Answer 1

适用于 IOS6。

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
    if ([(NSMutableURLRequest *)request respondsToSelector:@selector(setValue:forHTTPHeaderField:)]) {
        [(NSMutableURLRequest *)request setValue:@" Safari/537.1" forHTTPHeaderField:@"User_Agent"];
    }
}