安卓/ Facebook : Insufficient priviledges when using Api

Question

在我的主要 Activity 中，我有以下代码:

    FacebookSdk.sdkInitialize(getApplicationContext());

我还添加了一个按钮，用于在我的 Facebook 时间轴上创建帖子:

Button b1 = (Button) findViewById(R.id.button1);
        b1.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                ShareLinkContent content = new ShareLinkContent.Builder()
                .setContentUrl(Uri.parse("https://developers.facebook.com"))
                .build();

                ShareApi.share(content, new FacebookCallback<Sharer.Result>() {

                    @Override
                    public void onSuccess(Result arg0) {
                        // TODO Auto-generated method stub

                    }

                    @Override
                    public void onError(FacebookException arg0) {
                        // TODO Auto-generated method stub

                    }

                    @Override
                    public void onCancel() {
                        // TODO Auto-generated method stub

                    }
                });


            }

当我在智能手机上运行我的应用程序并单击按钮时，我总是会收到以下消息(onError 回调):

Insufficient permissions for sharing content via Api.

我已经在 list 文件中配置了 com.facebook.app.FacebookContentProvider、com.facebook.sdk.ApplicationId、com.facebook.FacebookActivity。并且还在 Facebook 上注册了我的应用程序。

请问缺少什么？我应该在我的应用程序上添加 Facebook 登录按钮吗？

Answer 1

我发现当 AccessToken.getCurrentAccessToken() 返回 null 时会发生此错误。因此，在使用 ShareAPI 之前，我必须明确向 Facebook 进行身份验证。

我在 Facebook 的源代码中看到了它，网址为 http://android-education-project.googlecode.com/svn/trunk/facebook_4_0_0/src/com/facebook/share/ShareApi.java。 :

/**
     * Share the content.
     *
     * @param callback the callback to call once the share is complete.
     */
    public void share(FacebookCallback<Sharer.Result> callback) {
        if (!this.canShare()) {
            ShareInternalUtility.invokeCallbackWithError(
                    callback, "Insufficient permissions for sharing content via Api.");
            return;
        }
        final ShareContent shareContent = this.getShareContent();

        // Validate the share content
        try {
            ShareContentValidation.validateForApiShare(shareContent);
        } catch (FacebookException ex) {
            ShareInternalUtility.invokeCallbackWithException(callback, ex);
            return;
        }

        if (shareContent instanceof ShareLinkContent) {
            this.shareLinkContent((ShareLinkContent) shareContent, callback);
        } else if (shareContent instanceof SharePhotoContent) {
            this.sharePhotoContent((SharePhotoContent) shareContent, callback);
        } else if (shareContent instanceof ShareVideoContent) {
            this.shareVideoContent((ShareVideoContent) shareContent, callback);
        } else if (shareContent instanceof ShareOpenGraphContent) {
            this.shareOpenGraphContent((ShareOpenGraphContent) shareContent, callback);
        }

    }

/**
     * Returns true if the current access token has the publish_actions permission.
     *
     * @return true if the current access token has the publish_actions permission, false otherwise.
     */
    public boolean canShare() {
        if (this.getShareContent() == null) {
            return false;
        }
        final AccessToken accessToken = AccessToken.getCurrentAccessToken();
        if (accessToken == null) {
            return false;
        }
        final Set<String> permissions = accessToken.getPermissions();
        if (permissions == null) {
            return false;
        }
        return (permissions.contains("publish_actions"));
    }