Question

有人可以帮助我吗？我制作了一个自定义的故事，它完美无缺，我只能弄清楚这种常见的动作类型有什么问题。窗口只是在打开和关闭后的第二个例外。

public void publishCommonOpenGraphStory() {

    OpenGraphObject book = OpenGraphObject.Factory.createForPost("book");
    book.setProperty("title", "Harry Potter");
    book.setProperty("description", "Description of HP book.");
    book.setProperty("url", "https://www.facebook.com/pages/Harry-Potter-6/115538755123952?rf=376474059116356");
    book.setProperty("image", "<img_url>"); // url was long so I cut it there

    OpenGraphAction ogAction = GraphObject.Factory.create(OpenGraphAction.class);
    ogAction.setProperty("book", book);
    ogAction.setType("books.reads");

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

我得到一个错误：

07-25 14:44:19.671  31907-31907/com.example.facebooktest E/ActivityResult.onComplete﹕ Error: com.facebook.FacebookException: Failed to generate preview for user.

我不知道问题出在哪里，对我来说一切似乎都没问题。

Answer 1

我弄清楚该方法有什么问题。当使用常见的facebook对象（例如本例中的books.book）时，您必须检查每个对象必需的字段（非空）。我不得不将book isbn number添加为属性，必须填写：

book.getData().setProperty("isbn", "2-07-057267-6");

这可以在facebook开发者网站的docs中找到。例： books.book doc

整个方法代码现在看起来像这样：

public void publishCommonOpenGraphStory() {
    OpenGraphObject book = OpenGraphObject.Factory.createForPost("books.book");
    book.setProperty("title", "Harry Potter");
    book.setProperty("description", "Description of HP book.");
    book.setProperty("url", "https://www.facebook.com/pages/Harry-Potter-6/115538755123952?rf=376474059116356");
    book.setProperty("image", "<img link>");
    book.getData().setProperty("isbn", "2-07-057267-6");


    OpenGraphAction ogAction = GraphObject.Factory.create(OpenGraphAction.class);
    ogAction.setProperty("book", book);
    ogAction.setType("books.reads");

    FacebookDialog shareDialog = new FacebookDialog.OpenGraphActionDialogBuilder(this, ogAction, "book")
            .build();
    uiHelper.trackPendingDialogCall(shareDialog.present());
}

无法为用户生成预览 - 具有共同的操作类型

1 个答案: