从android应用程序获得facebook个人登录电子邮件

Question

我得到了从facebook账户收到邮件的许可。虽然我没能拿到。总是一根空的绳子。这是我的密码。请帮帮我。

我在添加我使用的代码。它是从堆栈溢出复制的。

fbLogin.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { LoginManager.getInstance().logInWithReadPermissions(LoginActivity.this, Arrays.asList("public_profile","email","basic_info")); } });

    callbackManager = CallbackManager.Factory.create();

    LoginManager.getInstance().registerCallback(callbackManager,
            new FacebookCallback<LoginResult>() {
                @Override
                public void onSuccess(LoginResult loginResult) {
                    GraphRequest.newMeRequest(
                            loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
                                @Override
                                public void onCompleted(JSONObject user, GraphResponse response) {
                                    if (response.getError() != null) {
                                        // handle error
                                    } else {
                                        socialData = new ArrayList<NameValuePair>();
                                        String email = user.optString("email");
                                        String id = user.optString("id");
                                        String name = user.optString("name");
                                        socialData.add(new BasicNameValuePair("id",id));
                                        socialData.add(new BasicNameValuePair("name",name));
                                        socialData.add(new BasicNameValuePair("email",email));
                                        Log.e("id",id);
                                        Log.e("name",name);
                                        Log.e("email",email);
                                        Log.e("object",user.toString());
                                        // send email and id to your web server
                                        SocialLogin socialLogin = new SocialLogin();
                                        socialLogin.execute("app/social-login");

                                    }
                                }
                            }).executeAsync();

                }

                @Override
                public void onCancel() {
                    Toast.makeText(LoginActivity.this, "Login Cancel", Toast.LENGTH_LONG).show();
                }

                @Override
                public void onError(FacebookException exception) {
                    Toast.makeText(LoginActivity.this, exception.getMessage(), Toast.LENGTH_LONG).show();
                }
            });

‘

这是我的输出

E/id﹕ 1046433868724117
E/name﹕ Jafer Poovan P
E/email﹕ '

Answer 1

试着使用这段代码。工作成功了。

​

loginButton = (LoginButton) findViewById(R.id.login_button);

List < String > permissionNeeds = Arrays.asList("user_photos", "email",
	"user_birthday", "public_profile", "AccessToken");
loginButton.registerCallback(callbackManager,
new FacebookCallback < LoginResult > () {@Override
	public void onSuccess(LoginResult loginResult) {

		System.out.println("onSuccess");

		String accessToken = loginResult.getAccessToken()
			.getToken();
		Log.i("accessToken", accessToken);

		GraphRequest request = GraphRequest.newMeRequest(
		loginResult.getAccessToken(),
		new GraphRequest.GraphJSONObjectCallback() {@Override
			public void onCompleted(JSONObject object,
			GraphResponse response) {
				Log.i("LoginActivity", response.toString());
				try {
					id = object.getString("id");
					try {
						URL profile_pic = new URL(
							"http://graph.facebook.com/" + id + "/picture?type=large");
						Log.i("profile_pic",
						profile_pic + "");

					} catch (MalformedURLException e) {
						e.printStackTrace();
					}
					name = object.getString("name");
					email = object.getString("email");
					gender = object.getString("gender");
					birthday = object.getString("birthday");
				} catch (JSONException e) {
					e.printStackTrace();
				}
			}
		});
		Bundle parameters = new Bundle();
		parameters.putString("fields",
			"id,name,email,gender, birthday");
		request.setParameters(parameters);
		request.executeAsync();
	}

	@Override
	public void onCancel() {
		System.out.println("onCancel");
	}

	@Override
	public void onError(FacebookException exception) {
		System.out.println("onError");
		Log.v("LoginActivity", exception.getCause().toString());
	}
});

​

有关更多信息和完全facebook登录代码Check my answer HERE。

Answer 2

查看v2.4：4的changelog中的“声明性字段”

现在您必须在API调用中指定字段，例如：/me?fields=name,email

...else您只得到字段"id“和"name”。