从Facebook提取个人资料图片并存储在Parse中

Question

我设法将Fb与Parse集成，并能够登录/注册并填充他们的名字，电子邮件解析。但是，当我尝试检索Facebook图片并存储到数据库中时，它根本不起作用。我的代码在makeMeRequest（）下面如下，我在登录过程完成后调用它。

感谢您对此的专家帮助（我尝试了很多从网上找到的方法，但没有一种方法可行）。我不知道我在这里是否遗漏了什么。欣赏一个lor。感谢。

private void makeMeRequest() {
    Request request = Request.newMeRequest(ParseFacebookUtils.getSession(),
            new Request.GraphUserCallback() {
                @Override
                public void onCompleted(final GraphUser user, Response response) {
                    if (user != null) {
                        // Create a JSON object to hold the profile info
                        JSONObject userProfile = new JSONObject();
                        try {
                            // Populate the JSON object
                            userProfile.put("facebookId", user.getId());
                            userProfile.put("username", user.getName());

                            currentUser.setUsername(user.getFirstName());
                            currentUser.setEmail(user.asMap().get("email").toString());



                            AsyncTask<Void, Void, Bitmap> t = new AsyncTask<Void, Void, Bitmap>(){
                                protected Bitmap doInBackground(Void... p) {
                                    Bitmap bm = null;
                                    try {
                                        URL aURL = new URL("http://graph.facebook.com/"+ user.getId()+"/picture?type=large");
                                        URLConnection conn = aURL.openConnection();
                                        conn.setUseCaches(true);
                                        conn.connect(); 
                                        InputStream is = conn.getInputStream(); 
                                        BufferedInputStream bis = new BufferedInputStream(is); 
                                        bm = BitmapFactory.decodeStream(bis);
                                        bis.close(); 
                                        is.close();
                                    } catch (IOException e) { 
                                        e.printStackTrace(); 
                                    }
                                    return bm;
                                }

                                protected void onPostExecute(Bitmap bm){

                                        Drawable drawable = new BitmapDrawable(getResources(), bm);
                                        ByteArrayOutputStream stream = new ByteArrayOutputStream();
                                        bm.compress(Bitmap.CompressFormat.PNG, 100, stream);
                                        byte[] byteArray = stream.toByteArray();

                                        byteArray = FileHelper.reduceImageForUpload(byteArray);

                                        ParseFile file = new ParseFile("profile_pix", byteArray);
                                        currentUser.put(ParseConstants.KEY_FILE, file);


                                }
                            };
                            t.execute();    


                            try {
                                currentUser.save();
                            } catch (ParseException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }




                            // Show the user info
                            //updateViewsWithProfileInfo();
                        } catch (JSONException e) {

                        }

                    } else if (response.getError() != null) {
                        if ((response.getError().getCategory() == FacebookRequestError.Category.AUTHENTICATION_RETRY)
                                || (response.getError().getCategory() == FacebookRequestError.Category.AUTHENTICATION_REOPEN_SESSION)) {

                            //onLogoutButtonClicked();
                        } else {

                        }
                    }
                }
            });
    request.executeAsync();

}