Question

我正在设计一个应用程序，它使用Facebook在表视图中显示提要..所以为了获得提要的结果我称之为方法 FBSDKGraphRequest 但我不知道如何从 FBSDKGraphRequest 外部检索结果的值，因为它们位于完成块中。我想在表格视图中显示名称和消息....

代码说明如下： -

FBSDKGraphRequest *request = [[FBSDKGraphRequest alloc]initWithGraphPath:Path parameters:@{ @"fields": @"feed{from,message,created_time}",} tokenString:accessToken version:FBSDK_TARGET_PLATFORM_VERSION HTTPMethod:@"GET"];
[request startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {

    if(error)
        NSLog(@"No Data");

    else {
       FeedCount = [NSDictionary dictionaryWithDictionary:result];
       NSDictionary*feed = [FeedCount objectForKey:@"feed"];
       NSArray*array1 = [feed objectForKey:@"data"];
       NSArray*array3 = [array1 valueForKey:@"from"];
       NSLog(@"Data:%@",array3); ---------------> **Displaying Data**
         }
   }];
NSLog(@"FeedCount:%@",FeedCount);----------------->**Showing Null**

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Answer 1

要从fbsdk获取字典结果，请将变量声明为__block NSDictionary *json;

然后将此内部块指定为

json =[FeedCount objectForKey:@"feed"];

你有没有试过这个，

__block NSDictionary *json;

FBSDKGraphRequest *request = [[FBSDKGraphRequest alloc]initWithGraphPath:Path parameters:@{ @"fields": @"feed{from,message,created_time}",} tokenString:accessToken version:FBSDK_TARGET_PLATFORM_VERSION HTTPMethod:@"GET"];
[request startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {

    if(error)
        NSLog(@"No Data");

    else {
       FeedCount = [NSDictionary dictionaryWithDictionary:result];
       json = [FeedCount objectForKey:@"feed"];
       NSArray*array1 = [feed objectForKey:@"data"];
       NSArray*array3 = [array1 valueForKey:@"from"];
       NSLog(@"Data:%@",array3); ---------------> **Displaying Data**
         }
   }];
NSLog(@"json:%@",json);

如何在块外使用FBSDKGraphRequest的结果

1 个答案: