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Facebook登錄名獲取用戶名，但配置文件電子郵件顯示我的Android應用程序為空

[英]Facebook Login Getting Username,But Profile email Showing Null from my Android app

 原文  2015-08-26 09:06:43  9   1    android/ facebook/ facebook-login/ facebook-sdk-3.1

問題描述

我在我的android應用中使用facebook登錄。

1.它可以很好地提取並顯示用戶名，但是用戶的電子郵件ID顯示為空。

2.如何獲取用戶的電子郵件ID，請提前幫助任何人解決此問題。

鏈接我推薦了

MainActivity.java 

public class MainActivity extends FragmentActivity {

    private LoginButton loginBtn;
    private Button postImageBtn;
    private Button updateStatusBtn;

    private TextView userName;

    private UiLifecycleHelper uiHelper;

    private static final List<String> PERMISSIONS = Arrays.asList("publish_actions","email");

    private static String message = "Sample status posted from android app";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        uiHelper = new UiLifecycleHelper(this, statusCallback);
        uiHelper.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        userName = (TextView) findViewById(R.id.user_name);
        loginBtn = (LoginButton) findViewById(R.id.fb_login_button);



        loginBtn.setBackgroundResource(R.drawable.fb);
        loginBtn.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
        loginBtn.setReadPermissions(Arrays.asList("email","user_photos")); 
        loginBtn.setUserInfoChangedCallback(new UserInfoChangedCallback() {
            @Override
            public void onUserInfoFetched(GraphUser user) 
            {
                if (user != null) {
                    userName.setText("Hello, " + user.getName());








                } else {
                    userName.setText("You are not logged");
                     Log.i("Not available", "No Facebook user");
                }
            }
        });

        postImageBtn = (Button) findViewById(R.id.post_image);
        postImageBtn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View view) {
                postImage();
            }
        });

        updateStatusBtn = (Button) findViewById(R.id.update_status);
        updateStatusBtn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

            }
        });

        buttonsEnabled(false);
    }

    private Session.StatusCallback statusCallback = new Session.StatusCallback() {
        @Override
        public void call(Session session, SessionState state,Exception exception) {
            if (state.isOpened())
            {
                buttonsEnabled(true);
                Log.d("FacebookSampleActivity", "Facebook session opened");

                getUserData(session,state);




            } else if (state.isClosed()) {
                buttonsEnabled(false);
                Log.d("FacebookSampleActivity", "Facebook session closed");
            }
        }
    };

    public void buttonsEnabled(boolean isEnabled) {
        postImageBtn.setEnabled(isEnabled);
        updateStatusBtn.setEnabled(isEnabled);
    }

    public void postImage() {
        if (checkPermissions()) {
            Bitmap img = BitmapFactory.decodeResource(getResources(),
                    R.drawable.ic_launcher);
            Request uploadRequest = Request.newUploadPhotoRequest(
                    Session.getActiveSession(), img, new Request.Callback() {
                        @Override
                        public void onCompleted(Response response) {
                            Toast.makeText(MainActivity.this,
                                    "Photo uploaded successfully",
                                    Toast.LENGTH_LONG).show();
                        }
                    });
            uploadRequest.executeAsync();
        } else {
            requestPermissions();
        }
    }

    public void postStatusMessage() {
        if (checkPermissions()) {
            Request request = Request.newStatusUpdateRequest(
                    Session.getActiveSession(), message,
                    new Request.Callback() {
                        @Override
                        public void onCompleted(Response response) {
                            if (response.getError() == null)
                                Toast.makeText(MainActivity.this,
                                        "Status updated successfully",
                                        Toast.LENGTH_LONG).show();
                        }
                    });
            request.executeAsync();
        } else {
            requestPermissions();
        }
    }

    public boolean checkPermissions() {
        Session s = Session.getActiveSession();
        if (s != null) 
        {

            return s.getPermissions().contains("publish_actions");
        } else
            return false;
    }

    public void requestPermissions()
    {
        Session s = Session.getActiveSession();
        if (s != null)
            s.requestNewPublishPermissions(new Session.NewPermissionsRequest(this,PERMISSIONS));
    }

    @Override
    public void onResume() {
        super.onResume();
        uiHelper.onResume();
        buttonsEnabled(Session.getActiveSession().isOpened());
    }

    @Override
    public void onPause() {
        super.onPause();
        uiHelper.onPause();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        uiHelper.onDestroy();
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        uiHelper.onActivityResult(requestCode, resultCode, data);
    }

    @Override
    public void onSaveInstanceState(Bundle savedState) {
        super.onSaveInstanceState(savedState);
        uiHelper.onSaveInstanceState(savedState);
    }



    private void getUserData(Session session, SessionState state)
    {
        if (state.isOpened())
        {
            Request.newMeRequest(session, new Request.GraphUserCallback()
            {
                @Override
                public void onCompleted(GraphUser user, Response response)
                {
                    if (response != null)
                    {
                        try
                        {
                            String name = user.getName();
                            // If you asked for email permission
                            String email = (String) user.getProperty("email");


                            Toast.makeText(getApplicationContext(), "Name: " + name + " Email: " + email, Toast.LENGTH_SHORT).show();
                        }
                        catch (Exception e)
                        {
                            e.printStackTrace();
                            //Log.d(LOG_TAG, "Exception e");
                        }

                    }
                }
            }).executeAsync();
        }
    }

1 個解決方案

解決方案1
 4 已采納  2015-08-27 08:50:40

我為我的問題找到了完美的解決方案。 下面添加了完美的代碼。

我引用的鏈接

MainActivity.class 

import android.support.v7.app.AppCompatActivity;
import android.text.Html;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
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.GraphRequestAsyncTask;
import com.facebook.GraphResponse;
import com.facebook.Profile;
import com.facebook.login.LoginManager;
import com.facebook.login.LoginResult;
import com.facebook.login.widget.LoginButton;
import com.facebook.login.widget.ProfilePictureView;
import com.facebook.share.model.ShareLinkContent;
import com.facebook.share.widget.ShareDialog;

import java.util.Arrays;
import org.json.JSONException;
import org.json.JSONObject;

public class MainActivity extends AppCompatActivity {
    CallbackManager callbackManager;
    Button share,details;
    ShareDialog shareDialog;
    LoginButton login;
    ProfilePictureView profile;
    Dialog details_dialog;
    TextView details_txt;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        FacebookSdk.sdkInitialize(getApplicationContext());
        setContentView(R.layout.activity_main);

        callbackManager = CallbackManager.Factory.create();
        login = (LoginButton)findViewById(R.id.login_button);
        profile = (ProfilePictureView)findViewById(R.id.picture);
        shareDialog = new ShareDialog(this);
        share = (Button)findViewById(R.id.share);
        details = (Button)findViewById(R.id.details);
        login.setReadPermissions("public_profile email");
        share.setVisibility(View.INVISIBLE);
        details.setVisibility(View.INVISIBLE);
        details_dialog = new Dialog(this);
        details_dialog.setContentView(R.layout.dialog_details);
        details_dialog.setTitle("Details");
        details_txt = (TextView)details_dialog.findViewById(R.id.details);
        details.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                details_dialog.show();
            }
        });


        if(AccessToken.getCurrentAccessToken() != null){
            RequestData();
            share.setVisibility(View.VISIBLE);
            details.setVisibility(View.VISIBLE);
        }
        login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if(AccessToken.getCurrentAccessToken() != null) {
                    share.setVisibility(View.INVISIBLE);
                    details.setVisibility(View.INVISIBLE);
                    profile.setProfileId(null);
                }
            }
        });
        share.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                ShareLinkContent content = new ShareLinkContent.Builder().build();
                shareDialog.show(content);

            }
        });
        login.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {

                if(AccessToken.getCurrentAccessToken() != null){
                    RequestData();
                    share.setVisibility(View.VISIBLE);
                    details.setVisibility(View.VISIBLE);
                }
            }

            @Override
            public void onCancel() {

            }

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

    }
    public void RequestData(){
        GraphRequest request = GraphRequest.newMeRequest(AccessToken.getCurrentAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
            @Override
            public void onCompleted(JSONObject object,GraphResponse response) {

                JSONObject json = response.getJSONObject();
                try {
                    if(json != null){
                        String text = "<b>Name :</b> "+json.getString("name")+"<br><br><b>Email :</b> "+json.getString("email")+"<br><br><b>Profile link :</b> "+json.getString("link");
                        details_txt.setText(Html.fromHtml(text));
                        profile.setProfileId(json.getString("id"));
                    }

                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }
        });
        Bundle parameters = new Bundle();
        parameters.putString("fields", "id,name,link,email,picture");
        request.setParameters(parameters);
        request.executeAsync();
    }

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

XML 

LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <com.facebook.login.widget.ProfilePictureView
        android:id="@+id/picture"
        android:layout_gravity="center"
        android:layout_marginTop="20dp"
        android:layout_width="200sp"
        android:layout_height="200sp"/>

    <com.facebook.login.widget.LoginButton
        android:id="@+id/login_button"
        android:layout_width="200sp"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginTop="20dp"
        android:layout_marginBottom="20dp" />
    <Button
        android:id="@+id/details"
        android:text="Show details"
        android:layout_gravity="center"
        android:layout_width="200sp"
        android:layout_marginBottom="20dp"
        android:layout_height="wrap_content" />
    <Button
        android:id="@+id/share"
        android:text="Share"
        android:layout_gravity="center"
        android:layout_width="200sp"
        android:layout_height="wrap_content" />
</LinearLayout>

清單：從開發人員站點更改您的AppId 

 <?xml version="1.0" encoding="utf-8"?>
    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.example.newdemoappbook"
        android:versionCode="1"
        android:versionName="1.0" >

        <uses-sdk
            android:minSdkVersion="8"
            android:targetSdkVersion="21" />

        <uses-permission android:name="android.permission.INTERNET" />


        <application
            android:allowBackup="true"
            android:icon="@drawable/ic_launcher"
            android:label="@string/app_name"
            android:theme="@style/AppTheme" >
            <meta-data android:name="com.facebook.sdk.ApplicationId" android:value="@string/facebook_app_id"/>

            <activity android:name="com.facebook.FacebookActivity"
                android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
                android:theme="@android:style/Theme.Translucent.NoTitleBar"
                android:label="@string/app_name" />
            <provider android:authorities="com.facebook.app.FacebookContentProvider4427**********"
                android:name="com.facebook.FacebookContentProvider"
                android:exported="true"/>

            <activity
                android:name=".MainActivity"
                android:label="@string/app_name" >
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />

                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
        </application>

    </manifest>

strings.xml中 

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">NewDemoAppbook</string>
    <string name="hello_world">Hello world!</string>
    <string name="action_settings">Settings</string>
    <string name="facebook_app_id">**********</string>

</resources>

最后下載最新的SDK，並在您的Eclipse中將其添加為庫。

下載SDK

謝謝。

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