Facebook SDK：在我的 Android 应用程序中检索用户信息
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【中文标题】Facebook SDK：在我的 Android 应用程序中检索用户信息【英文标题】：Facebook SDK: retrieve User information in my Android application 【发布时间】：2014-07-14 11:06:45 【问题描述】：我是 android 开发的新手，我知道有很多关于我要问的示例，但我无法真正理解它们，而 facebook doc https://developers.facebook.com/docs/android/graph/ 中的示例非常复杂
我在我的代码中集成了 Facebook，如下所示
package com.example.museum;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.json.JSONException;
import org.json.JSONObject;
import com.facebook.Request;
import com.facebook.Response;
import com.facebook.Session;
import com.facebook.Session.StatusCallback;
import com.facebook.SessionState;
import com.facebook.android.DialogError;
import com.facebook.android.Facebook;
import com.facebook.android.FacebookError;
import com.facebook.android.Util;
import com.facebook.model.GraphUser;
import android.app.Activity;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.DialogInterface.OnClickListener;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.StrictMode;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;
public class MainActivity extends Activity implements android.view.View.OnClickListener
Facebook fb;
ImageView pic, button, signup;
SharedPreferences sp;
TextView welcome;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
String APP_ID = getString(R.string.app_id);
fb = new Facebook(APP_ID);
welcome = (TextView)findViewById(R.id.welcome);
sp = getPreferences(MODE_PRIVATE);
String access_token = sp.getString("access_token", null);
long expires = sp.getLong("access_expires", 0);
if (access_token != null)
fb.setAccessToken(access_token);
if (expires != 0)
fb.setAccessExpires(expires);
button = (ImageView) findViewById(R.id.login);
pic = (ImageView) findViewById(R.id.picture_pic);
signup = (ImageView)findViewById(R.id.signup);
signup.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
// TODO Auto-generated method stub
Intent i = new Intent(getApplicationContext(),One.class);
startActivity(i);
);
button.setOnClickListener(this);
userInfo();
@SuppressWarnings("deprecation")
private void userInfo()
// TODO Auto-generated method stub
List<String> permissions = new ArrayList<String>();
permissions.add("email");
if(fb.isSessionValid())
button.setImageResource(R.drawable.logout_button);
signup.setVisibility(ImageView.INVISIBLE);
//pic.setVisibility(ImageView.VISIBLE);
JSONObject obj = null;
URL img_value = null;
try
String jsonUser = fb.request("me");
obj = Util.parseJson(jsonUser);
String id = obj.optString("id");
String name = obj.optString("name");
Log.d("NAME", name);
// getting email of the user
//String email = obj.optString("email");
//for (int i = 0; i< 100 ; i++)Log.d("E_MAIL", email);
welcome.setText("Welcome to Museum, " + name);
// img_value = new URL("https://graph.facebook.com/"+id+"/picture?height=100&type=normal&width=100&redirect=0");
// Bitmap bmp = BitmapFactory.decodeStream(img_value.openConnection().getInputStream());
// pic.setImageBitmap(bmp);
// pic.setVisibility(ImageView.VISIBLE);
catch (FacebookError e)
// TODO Auto-generated catch block
e.printStackTrace();
Log.d("Error", "FacebookError");
catch (JSONException e)
Log.d("Error", "JSONException");
e.printStackTrace();
catch (IOException e)
Log.d("Error", "IOException");
e.printStackTrace();
catch (Exception e)
// TODO Auto-generated catch block
e.printStackTrace();
for (int i = 0; i< 50 ; i++)Log.d("Error", "Exception");
else
button.setImageResource(R.drawable.login_button);
pic.setVisibility(ImageView.INVISIBLE);
@Override
public void onClick(View v)
// TODO Auto-generated method stub
if(fb.isSessionValid())
// button close our session - log out of facebook
try
fb.logout(getApplicationContext());
userInfo();
catch (MalformedURLException e)
// TODO Auto-generated catch block
e.printStackTrace();
catch (IOException e)
// TODO Auto-generated catch block
e.printStackTrace();
else
//login to facebook
fb.authorize(MainActivity.this, new Facebook.DialogListener()
@Override
public void onFacebookError(FacebookError e)
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "fbError", Toast.LENGTH_SHORT).show();
@Override
public void onError(DialogError e)
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "onError", Toast.LENGTH_SHORT).show();
@Override
public void onComplete(Bundle values)
// TODO Auto-generated method stub
Editor editor = sp.edit();
editor.putString("access_token", fb.getAccessToken());
editor.putLong("access_expires", fb.getAccessExpires());
editor.commit();
userInfo();
@Override
public void onCancel()
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "onCancel", Toast.LENGTH_SHORT).show();
);
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
fb.authorizeCallback(requestCode, resultCode, data);
我需要检索用户信息，例如他的电子邮件、他的位置、他的生日以及他喜欢的最重要的页面，我知道我必须使用权限，请告诉我该怎么做。
任何帮助将不胜感激。
【问题讨论】：
【参考方案1】：您需要发出新的回调请求。像这样：
Session.OpenRequest openRequest = new Session.OpenRequest(Login.this);
openRequest.setPermissions(Arrays.asList("email", "user_birthday"));
openRequest.setCallback(new Session.StatusCallback()
// callback when session changes state
@Override
public void call(Session session, SessionState state,
Exception exception)
if (session.isOpened())
// make request to the /me API
Request request = Request.newMeRequest(session,
new Request.GraphUserCallback()
// callback after Graph API response with user
// object
@Override
public void onCompleted(GraphUser gUser,
Response response)
if (gUser != null)
String email = gUser.getProperty("email").toString();
String firstName = gUser.getFirstName();
String lastName = gUser.getLastName();
String username = gUser.getUsername();
String birthday = gUser.getBirthday();
);
request.executeAsync();
);
【讨论】：
您的意思是代替我的方法 userInfo() 还是除此之外？在哪里添加它我有点困惑 @مروانعلىفهمى 你应该可以把它放在你的userInfo() 方法中
那么什么是“用户”，它是一个捆绑包吗？因为我不明白在做什么！
我这样做并试图在日志中输出它，但我什么也没得到......确定我只是替换了 userInfo() 中的内容并且它可以工作
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