android - 如何通过更高分辨率的 graphRequest 加载 Facebook 封面照片？ [安卓 | Facebook v2.3]

Question

我正在编写一个 Android 应用程序，我需要用户使用 Facebook 登录。

登录工作正常，我也得到了一张个人资料图片，但图片的分辨率非常低 - 大约 50 px x 50 px。有没有可能得到一个更好的？

以下代码用于在 Facebook 登录过程和 GraphRequest.newMeRequest 之后加载图像.

public class LoadFacebookUserPicture extends AsyncTask<String, Void, Bitmap> {

    private Context context;

    public LoadFacebookUserPicture (Context context) {
        this.context = context;
    }

    @Override
    protected Bitmap doInBackground(String... params) {
        try {
            URL url = new URL(params[0]);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoInput(true);
            connection.connect();
            InputStream input = connection.getInputStream();
            Bitmap myBitmap = BitmapFactory.decodeStream(input);
            FileOutputStream fos = context.openFileOutput("test.png", Context.MODE_PRIVATE);
            myBitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
            fos.close();
            return null;
        } catch (Exception e) {
            e.printStackTrace();
            Log.e("LoadFacebookUserPicture", e.getMessage());
        }
        Log.e("LoadFacebookUserPicture", "Passt");
        return null;
    }

}

这是请求，在类 LoadFacebookUserPicture 中被调用。

  GraphRequest request = GraphRequest.newMeRequest(
                        currentAccessToken,
                        new GraphRequest.GraphJSONObjectCallback() {
                            @Override
                            public void onCompleted(
                                    JSONObject object,
                                    GraphResponse response) {
                                // Save facebook data
                                SharedPreferences sharedPref = getApplicationContext().getSharedPreferences(getString(R.string.userdata_facebook), Context.MODE_PRIVATE);
                                SharedPreferences.Editor editor = sharedPref.edit();
                                try {
                                    // Lese von FB json objekt
                                    int fb_id = ((JSONObject) object).getInt("id");
                                    String fb_name = ((JSONObject) object).getString("name");
                                    String fb_gender = ((JSONObject) object).getString("gender");
                                    String fb_link = ((JSONObject) object).getString("link");
                                    JSONObject json_data = ((JSONObject) object).getJSONObject("picture").getJSONObject("data");
                                    String fb_picture_url = json_data.getString("url");
                                    // Schreibe in private shared pref der activity
                                    editor.putInt(getString(R.string.fb_user_id), fb_id);
                                    editor.putString(getString(R.string.fb_user_name), fb_name);
                                    editor.putString(getString(R.string.fb_user_gender), fb_gender);
                                    editor.putString(getString(R.string.fb_user_link), fb_link);
                                    editor.putString(getString(R.string.fb_user_picture_url), fb_picture_url);
                                    editor.commit();

                                    String[] params = new String[1];
                                    params[0] = fb_picture_url;
                                    new LoadFacebookUserPicture(MainActivity.this).execute(params);
                                } catch (JSONException e) {
                                    e.printStackTrace();
                                } catch (Exception ex) {
                                    ex.printStackTrace();
                                }
                            }
                        });
                Bundle parameters = new Bundle();
                parameters.putString("fields", "id,name,birthday,gender,link,picture");
                request.setParameters(parameters);
                request.executeAsync();

Answer 1

试试这个，这会给你一个更好的形象

http://graph.facebook.com/<fb_id >/picture?type=large