Android Facebook-sdf Exception: Failed to generate preview for user

Question

i\'m developing a simple android app and i want post a status in facebook using OpenGraphObject and OpenGraphAction.

if i use new FacebookDialog.ShareDialogBuilder

Answer 1

We had the exact same error some times ago. Check you are using the correct action type in OpenGraphActionDialogBuilder. We fixed the same error just using the correct action type parameter. In your case you should check if "yourcity:visit" is the name of the action. Go to developer consolle https://developers.facebook.com/x/apps/your-app-id/open-graph/action-types/ and click on Get Code for the action you want to implement. Then read the url that should looks like something like this:

https://graph.facebook.com/me/app_namespace:app_action?...

then use the correct app_action in your code. It should fix!

Answer 2

Have been dealing with this error for hours. Heres how I fixed it. The Actions and Objects you specified in your code are the ones that cause the problem.

The samples provided on the Facebook developers guide aren't good enough I feel. Heres a sample code you can use that will work perfectly. Basically make sure your ObjectType -> eg: video.other is set correctly and your Action type e.g: video.watches is set right.

    void sometestCode(){
        OpenGraphObject video = OpenGraphObject.Factory.createForPost("video.other");
        video.setTitle("Awesome Video");
        video.setDescription("This video will show you how to make the Opengraph work");

        OpenGraphAction action = GraphObject.Factory.create(OpenGraphAction.class);
        action.setProperty("video", video);
        action.setType("video.watches");            

        FacebookDialog shareDialog = new FacebookDialog.OpenGraphActionDialogBuilder(this, action, "video")
                .build();
        uiHelper.trackPendingDialogCall(shareDialog.present());

    }