从Facebook活动上发布结果代码

Question

我正试图通过我的Android应用程序在Facebook上进行共享网址链接。下面是代码。 问题，我需要能够检测到帖子是否成功，或者用户取消或其他一些错误，我能够发帖，但我无法得到任何回报。即。永远不会调用onActivityResult。我错过了什么？感谢。

public static void openFacebook(Activity activity, View view, String urlToShare) {

        //String urlToShare = "www.korvac.com";

        Intent shareIntent = new Intent();
        shareIntent.setAction(Intent.ACTION_SEND);
        shareIntent.setType("text/plain");
        shareIntent.putExtra(Intent.EXTRA_TEXT, urlToShare);
        // See if official Facebook app is found
        boolean facebookAppFound = false;
        List<ResolveInfo> matches = activity.getPackageManager().queryIntentActivities(
                shareIntent, 0);
        for (ResolveInfo info : matches) {

            if (info.activityInfo.packageName.startsWith("com.facebook.katana")) {
                // "com.facebook.katana" is the package name for Facebook app
                // "com.facebook.orca" is for FB Messenger app
                shareIntent.setPackage(info.activityInfo.packageName);
                facebookAppFound = true;
                break;
            }
        }
        // As fallback, launch sharer.php in a browser
        if (!facebookAppFound) {
            String sharerUrl = "https://www.facebook.com/sharer/sharer.php?u="
                    + urlToShare;
            shareIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(sharerUrl));
        }

        activity.startActivityForResult(shareIntent, 90);

    }

    /* Called when the second activity's finished */
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        switch(requestCode) {
        case 90:
            if (resultCode == RESULT_OK) {
                Bundle res = data.getExtras();
                String result = res.getString("param_result");
                Log.d("facebook", "result:"+result);
            }
            else{
                Log.d("facebook", "result:"+ "failed");
            }
            break;
        }
    }