In my Unity IOS game, I am unsuccessfully trying to use FB.Feed to share a screenshot on the user's wall.
Facebook documentation uses FB.Api to publish the screenshot, but this method does not display a share dialog, it simply uploads the pic to Facebook.
Answers I have found so far:
Upload the picture using FB.Api, and then parse the FBResult for the picture URL, and feed that to FB.Feed Link to answer.
This method triggers an error, since it is not possible to use a Facebook URL as source for a picture.
Save the picture locally and prepend "File://" to the picture path. Link to question. This does not seem to work either, and the Facebook documentation does not seem to have any information on URL formatting.
My question:
Is this the correct (and only) way to display a share dialog when publishing a picture? Or am I looking in the wrong direction?
FB.Feed only allows you to post link to images. It doesn't upload the images to Facebook. Therefore, these images need to hosted somewhere on the net and not locally.
The best way to make it work is either upload the images to FB (with privacy property set to EVERYONE) using FB.API, and then share the link to that picture via FB.Feed. If you don't want to create duplicate stories, i.e. one from posting the picture and another from FB.Feed, make sure that you set no_story to true.
Related
My goal is to post to my FB page (/{page-id}/feed) a link to a website, choosing the image to show instead of the picture scraped automatically from the web page. The image I'd like to show is not in the web page, so I cannot use the og:image tag.
I'm using the current API (v2.9) and this is what I've tried so far in the Graph API Explorer:
the picture parameter, that does not work as expected (it doesn't replace the automatic image)
picture and link parameters both pointing to the image url, with an action button, but it must have the same url used for the link parameter
the child_attachments parameter, but I need at least 2 images and the final result is quite different, too
additional fields of the link parameter, but thy were removed in the 2.9 API
a lot of combinations between these parameters, with no luck
What am I missing?
For information regarding why it isn't working. I assume they removed it to force users to add it to their website like Twitter did with their Twitter cards and maybe to stop impersonating pages.
https://developers.facebook.com/docs/sharing/reference/feed-dialog#deprecated-params
We currently allow users to post images to their FB wall by using FB.Feed() with a URL of existing images on our CDN and we can include a description, a link, caption, etc.. The interface for posting the image is great because it's built by Facebook and gives the ability to choose who sees it (friends, me only, etc.).
We now want to allow users the ability to post images of their creations in the game, which obviously can't be pre-taken images on our CDN, and we'd prefer avoiding the route of uploading all the images to our CDN then using FB.Feed().
I know it's possibly to upload an image using FB.API() but this requires us building a custom popup to allow the users to type what they want to say for the message of the image rather than using the built-in popup from FB.Feed() and it doesn't give the options of who sees the post and as far as I can tell, it doesn't let us add a link, description and caption.
TLDR: Is FB.API() the only way to UPLOAD an image to a user's wall? If so, this requires building a custom interface for it instead of using the built-in FB.Post() interface, right?
Thanks,
Colter
Edit: I didn't see this post until now, but it's a similar question but I want to know if there is the ability to add a description, link and caption to the image AND use the built-in FB interface.
Copy/paste from Brian Jew's comment above:
"There currently isn't a way to upload screenshots without FB.API(). It does sound like an interesting idea to have something like that for FB.Feed() though."
I'm stuck with this problem for several weeks now and will try to give a short and detailed explanation below:
Situation
Users visiting the websites and has the option to generate an image with the GD-library. So every users generated a personal image. Simple... until now. After generating the image, the user gets the option to share this image to Facebook. This is done via the OpenGraph protocol.
What's working (Yeah!)
Generating the image is working perfectly fine. Sharing something to Facebook is working also.
Problem
Although the following code is used on sharing the image (fbrefresh=CAN_BE_ANYTHING). FB stills pulls an old image. Sometimes this is a really old image, sometimes it's a more current generated image. But never the just generated image.
And now?
As said I've already tried the fbrefresh=CAN_BE_ANYTHING. Also in de debug tool the right image isn't showing up, but this is probably because the generated image has an unique ID generated from the users cookie. So this id is only usable when the users clicks on generate and after that shares the generated image.
Is there any example on the internet that uses the same sort of strategy and is working? I've searched half the internet and didn't found it yet it's becoming more and more frustrating.
After generating the image, the user gets the option to share this image to Facebook. This is done via the OpenGraph protocol.
What exactly do you mean by the latter? Are you just uploading that image to the user’s wall/one of their albums, or are you publishing an Open Graph object with a user-generated photo attached? (Btw., user-generated photo is meant literally for OG actions – you should only do it with photos that the user has taken using f.e. their mobile phone camera while they where undertaking the action. I doubt if a GDlib-generated image fits into that description.)
Although the following code is used on sharing the image (fbrefresh=CAN_BE_ANYTHING). FB stills pulls an old image.
And by “pull” you mean what exactly, again? Do you upload the photo as an HTTP POST upload, do you upload it by URL, did you specify it as og:image for an OG object, or do you pass it as user-generated photo while publishing an action?
Now, usually the easiest way for resources referenced by a URL to get properly refreshed by the requesting client, is to attach a different value to the query string/as a GET parameter – f.e. the current unix timestamp: …/image.php?1984372634 or …/image.php?foo=bar&forcerefresh=1984372634
Since this value changes every second, it makes each of those URLs a different URL, and the requesting client absolutely has no choice but to request that resource, because he can not have it in its cache already.
I'm using the Graph API to post to a user's wall via a 3rd party website. The update contains a link to said 3rd party website. (In functionality, it's kind of like just putting a Facebook "Like" button on the 3rd party page, except I want some more finely-tuned control over how the caption looks on Facebook.)
I am not specifying a picture for the post. When the post is created, Facebook's bot automatically connects to the 3rd party page specified in the link and selects an image to use as a thumbnail. Sadly, the image is almost never relavant, and I would just rather Facebook not look for a thumbnail at all.
I can probably put some Open Graph tags on the page to help out Facebook's bot, but I don't see a way to use Open Graph to specify that you'd like to have no image, and that Facebook shouldn't choose one automatically.
Any way to do this?
Although Facebook seems to ignore the picture set to an empty string in the Graph API call, setting an Open Graph tag for the picture which is an empty string seems to have done the trick.
When you publishing the the stream, include the "picture" property in the request and just set it to an empty string. This will ensure you dont have a url on the post. My other suggestion would be to put the Open Graph tags on the pages you are sharing. This will ensure that both you and others who share the url will have the correct data and images show on Facebook. http://developers.facebook.com/docs/opengraph
So what I am trying to do is post an image that has been created by a user on an iphone into that users newsfeed.
The functionality I am having a hard time understanding if it is possible:
Can I pass a local NSURL (or URL?)(to a png file that lives in the documents folder) through a JSON string and onto Facebook?
i want to mimic the action of a user going to his/her facebook page, clicking into the textfield for their newsfeeld, uploading an image by clicking the "photos" icon and selecting an image from a local disk and uploading it. I would also like to add some text into the post optionally.
I'm just getting started with the Facebook api and it seems pretty tough right now, any help would be appreciated. code examples appreciated.
Thanks,
Nick
You'll need to use a third-party image host like YFrog or roll your own image host. Facebook requires that all media attachments (including photos) be hosted on the public web. Even though they cache the images themselves, the URL that you send to them has to have its own public URL. Many of the popular Twitter image hosts have simple REST APIs to achieve this.
You can also use Facebook itself to host the image via their photo.upload API, if you don't mind two side-effects: it will appear in the user's photo albums, and the thumbnail is likely to appear in the stream twice (once representing the addition to the photo album, and the second in the actual stream story you publish). You can't currently get around this doubling artifact, but it will give you a stable host for the uploaded image.
Just to clarify this. I was actually able to pass and image directly from the iPhone without a third party but that was posting an image to a users photo album. There are I think two methods in the fbconnect api for posting one contains an extra argument for a data argument which can be an image. I'll post more details when I'm in front of the documentation.