在Android上检索Facebook个人资料帖子（状态）

Question

我是Android和Java开发的新手，我正在尝试找出一种方法来检索当前用户的个人资料帖子，并将其保存在我的智能手机上的文本文件中，以便进一步处理。

我可以检索用户名，电子邮件，性别，年龄范围和生日。到目前为止一切正常，当Facebook与我的应用程序连接时，正在编写文本文件。

下面的类是如何编码以检索提到的数据，如果有人知道如何通过这种方法检索帖子，请建议？

谢谢！

package com.example.daunte_pc.anique;

import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.design.widget.NavigationView;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.MenuItem;
import android.widget.Toast;

import com.facebook.AccessToken;
import com.facebook.CallbackManager;
import com.facebook.FacebookCallback;
import com.facebook.FacebookException;
import com.facebook.FacebookSdk;
import com.facebook.GraphRequest;
import com.facebook.GraphResponse;
import com.facebook.login.LoginResult;
import com.facebook.login.widget.LoginButton;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.File;
import java.io.FileWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Arrays;


public class SocialActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener{
    private static final String TAG = "SocialActivity";
    LoginButton loginButton;
    CallbackManager callbackManager;
    ProgressDialog progressDialog;
    URL profile_pic;
    String id;
    DrawerLayout drawerLayout;
    ActionBarDrawerToggle actionBarDrawerToggle;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_social);

        drawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
        actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.open,R.string.close);
        drawerLayout.addDrawerListener(actionBarDrawerToggle);
        NavigationView navigationView = (NavigationView)findViewById(R.id.navigation);
        actionBarDrawerToggle.syncState();
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        navigationView.setNavigationItemSelectedListener(this);

        FacebookSdk.sdkInitialize(getApplicationContext());
        loginButton = (LoginButton)findViewById(R.id.login_button);
        callbackManager = CallbackManager.Factory.create();
        loginButton.setReadPermissions(Arrays.asList("public_profile", "email", "user_birthday", "user_status","user_posts"));


        loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(final LoginResult loginResult) {
                progressDialog = new ProgressDialog(SocialActivity.this);
                progressDialog.setMessage("Please Wait! Anique_Profile's being processed!");
                progressDialog.show();
                String accessToken = loginResult.getAccessToken().getToken();
                Log.i("accessToken",accessToken);



                GraphRequest request = GraphRequest.newMeRequest(AccessToken.getCurrentAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
                    @Override
                    public void onCompleted(JSONObject object, GraphResponse response) {
                        Log.i("Test",response.toString());

                        Bundle bFacebookData = getFacebookData(object);
                        String name = bFacebookData.getString( "name");
                        String email = bFacebookData.getString( "email");
                        String gender = bFacebookData.getString( "gender");
                        String profilepic = bFacebookData.getString( "profile_pic");
                        String age_range = bFacebookData.getString( "age_range");
                        String birthday = bFacebookData.getString( "birthday");
                        String posts = bFacebookData.getString( "posts{message}");



                        Intent in = new Intent(SocialActivity.this, Facebook_Profile.class);
                        in.putExtra("name", name);
                        in.putExtra("email", email);
                        in.putExtra("gender", gender);
                        in.putExtra("Image", profilepic);
                        in.putExtra("posts", posts);

                        startActivity(in);

                        try{
                            File root = new File(Environment.getExternalStorageDirectory(),"Anique Text Files");
                            if (! root.exists()){
                                root.mkdir();
                            }

                            File filePath = new File(root, "myFile.txt");
                            FileWriter writer = new FileWriter(filePath);
                            writer.append("Name : "+ name+"\n");
                            writer.append("\n");
                            writer.append("Email : "+ email+"\n");
                            writer.append("\n");
                            writer.append("Gender : "+ gender+"\n");
                            writer.append("\n");
                            writer.append("Age : "+ age_range+"\n");
                            writer.append("\n");
                            writer.append("Birthday : "+ birthday+"\n");
                            writer.append("\n");
                            writer.append("Posts : "+ posts+"\n");
                            writer.append("\n");
                            writer.flush();
                            writer.close();
                            Toast.makeText(SocialActivity.this,"Success!! Logged into Anique_Profile as per given user information. ",Toast.LENGTH_LONG).show();
                            Toast.makeText(SocialActivity.this, "Data is Written!", Toast.LENGTH_LONG).show();
                        }catch (Exception ex){
                            ex.printStackTrace();
                        }

                        progressDialog.hide();
                        finish();
                    }
                });

                Bundle params = new Bundle();
                params.putString("fields", "id, name, email, gender, age_range, birthday, posts, feed");
                request.setParameters(params);
                request.executeAsync();
            }


            @Override
            public void onCancel() {
            }

            @Override
            public void onError(FacebookException error) {
            }
        });
    }

    private Bundle getFacebookData(JSONObject object) {

        Bundle bundle = new Bundle();
        try{
            id = object.getString("id");
            profile_pic = new URL("https://graph.facebook.com/" + id + "/picture?width=200&height=200");
            Log.i("profile_pic", profile_pic +"");
            bundle.putString("profile_pic",profile_pic.toString());
        }catch (JSONException ex){
            ex.printStackTrace();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
        bundle.putString("idFacebook",id);

        if(object.has("name")){
            try{
                bundle.putString("name", object.getString("name"));
            }catch (JSONException ex){
                ex.printStackTrace();
            }
        }

        if(object.has("email")){
            try{
                bundle.putString("email", object.getString("email"));
            }catch (JSONException ex){
                ex.printStackTrace();
            }
        }

        if(object.has("gender")){
            try{
                bundle.putString("gender", object.getString("gender"));
            }catch (JSONException ex){
                ex.printStackTrace();
            }
        }

        if(object.has("age_range")){
            try{
                bundle.putString("age_range", object.getString("age_range"));
            }catch (JSONException ex){
                ex.printStackTrace();
            }
        }

        if(object.has("birthday")){
            try{
                bundle.putString("birthday", object.getString("birthday"));
            }catch (JSONException ex){
                ex.printStackTrace();
            }
        }

        if(object.has("posts")){
            try{
                bundle.putString("posts", object.getString("posts"));
            }catch (JSONException ex){
                ex.printStackTrace();
            }
        }


        return bundle;
    }

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        callbackManager.onActivityResult(requestCode, resultCode, data);
    }

}

Answer 1

  

我希望获取当前用户个人资料状态，以便捕获特定关键字以预测某些内容。在我的应用程序上向用户显示帖子没有异议。但这似乎并不合适，因为此处涉及预测。

您需要对数据做一些事情，这些数据或多或少直接有益于用户的“应用内体验”开始......如果唯一的目的是对数据进行背景分析，Facebook将不会批准这一点。与用户体验没有直接联系。

阅读用户帖子所需的权限为user_posts，但文档会将此列为不适用的用例之一：

  

不可见地使用此数据，例如情绪分析或防范垃圾邮件机器人。

https://developers.facebook.com/docs/facebook-login/permissions/v3.0#reference-user_posts