ios - 通过 iOS Graph API 使用用户位置将照片上传到自己的墙上

Question

我需要在用户的 facebook 墙上张贴一张带有用户位置的照片(从相机拍摄)。现在，facebook 照片对象有一个名为 place 的字段。 :

object containing id and name of Page associated with this location, and a location field containing geographic information such as latitude, longitude, country, and other fields (fields will vary based on geography and availability of information)

现在我如何得到这个地方，附上照片并上传到用户墙上。这是我的照片上传代码:

NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                       resultImage, @"picture",
                                       location, @"place",
                                       nil];

        [appDelegate.facebook requestWithGraphPath:@"me/photos"
                                         andParams:params
                                     andHttpMethod:@"POST"
                                       andDelegate:self];

但是，我如何在此处获取位置参数？谁能帮忙？提前致谢。

Answer 1

根据 this documentation，地点对象只能是所需位置的 Facebook 页面 ID。 .所以，这就是我在上传照片时设法获取用户位置的方法。

-(void)fbCheckForPlace:(CLLocation *)location
{
    NSString *centerLocation = [[NSString alloc] initWithFormat:@"%f,%f",
                                location.coordinate.latitude,
                                location.coordinate.longitude];
    NSLog(@"center location is : %@",centerLocation);
    NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                    @"place",  @"type",
                                    centerLocation, @"center",
                                    @"1000",  @"distance",
                                    nil];
    [centerLocation release];
    [appDelegate.facebook requestWithGraphPath:@"search" andParams:params andDelegate:self];
}

当前位置是通过调用CLLocationManager delegate获取的，并传入上述方法。

接下来，如果这个请求成功，地点对象被插入到一个可变数组中。

NSArray *resultData = [result objectForKey:@"data"];
        for (NSUInteger i=0; i<[resultData count] && i < 5; i++) 
        {
            [self.listOfPlaces addObject:[resultData objectAtIndex:i]];
        }

然后照片上传方法被触发:

- (void)uploadPhotoWithLocation
{
    NSString *placeId = [[self.listOfPlaces objectAtIndex:0] objectForKey:@"id"];

    params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   self.resultImage, @"picture",
                                   placeId, @"place",
                                   nil];

    [appDelegate.facebook requestWithGraphPath:@"me/photos"
                                     andParams:params
                                 andHttpMethod:@"POST"
                                   andDelegate:self];
}

我已经取得了可用签到的第一个附近位置 ( [self.listOfPlaces objectAtIndex:0] )，现在该应用程序可以成功发布用户当前附近位置的照片。