Question

如何从Facebook登录获取电子邮件ID

添加的权限是

mFBLoginButton.setReadPermissions("user_friends");
mFBLoginButton.setReadPermissions("public_profile");
mFBLoginButton.setReadPermissions("email");
mFBLoginButton.setReadPermissions("user_birthday");

我正在通过Facebook教程进行登录并访问我正在使用GraphRequest代码的电子邮件，如下所示

new GraphRequest(
        AccessToken.getCurrentAccessToken(),
        "/me?fields=email",
        null,
        HttpMethod.GET,
        new GraphRequest.Callback() {
            public void onCompleted(GraphResponse response) {
                if (response != null)
                    Log.d(TAG, " response " + response.toString());
            }
        }
).executeAsync();

但我没有在回复中收到电子邮件。请帮助我一些人

Answer 1

正如'Md Abdul Gafur'所提到的，请确保您的Facebook帐户已正确设置。

将依赖项添加到build.gradle：

编译'com.facebook.android:facebook-android-sdk:4.2.0'

将facebook活动添加到AndroidManifest.xml：

    <activity
        android:name="com.facebook.FacebookActivity"
        android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.Translucent.NoTitleBar" />

然后在你的actvitiy覆盖onActivityResult：

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

使用以下网址登录您的活动：

FacebookSdk.sdkInitialize(mContext.getApplicationContext());
    FacebookSdk.setApplicationId(mApiKey);
    mCallbackManager = CallbackManager.Factory.create();
    LoginManager.getInstance().registerCallback(mCallbackManager, new FacebookCallback<LoginResult>() {
        @Override
        public void onSuccess(LoginResult loginResult) {
            GraphRequest request = GraphRequest.newMeRequest(loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
                @Override
                public void onCompleted(JSONObject user, GraphResponse response) {
                    if (response.getError() != null) {
                        // handle error
                    } else {
                        if (user != null) {
                            // Get the data you need 
                            String email = user.optString("email", "");
                        } else {
                            //handle null user
                        }
                    }
                }
            });
            request.executeAsync();
        }

        @Override
        public void onCancel() {
           //handle cancel
        }

        @Override
        public void onError(FacebookException exception) {
           // handle exception
        }
    });
    LoginManager.getInstance().logInWithReadPermissions(mContext, Collections.singletonList("public_profile"));

Answer 2

您需要在登录获取权限时使用参数询问permissions`，您还必须考虑这样一个事实：并非所有登录用户都有分配给其帐户的电子邮件，也有访问权限的权限。

可以使用手机号码打开并验证自己的Facebook帐户，因此您帐户中不存在电子邮件的可能性。

希望此信息有所帮助！

Answer 3

使用此代码。它的成功运作。您可以通过此获取所有用户数据。

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());
	}
});

从facebook SDK登录获取电子邮件

3 个答案: