如何在 Facebook Android sdk 4.0 中使用 Graph Request 获取登录用户的电子邮件地址 [英] How to get the logged user's email address with Graph Request in Facebook Android sdk 4.0
问题描述
一旦用户使用 Facebook (sdk 4.0) 登录我的 Android 应用程序,我就会尝试获取他的电子邮件地址.我读过很多帖子问同样的事情,但我仍然无法让它工作.我只是用代码登录用户
I'm trying to get the user's email address once he's logged into my Android app with Facebook (sdk 4.0). I've read many posts asking the same thing but I still couldn't make it work. I simply log the user in with the code
LoginManager.getInstance().logInWithReadPermissions(this, Arrays.asList("public_profile", "user_friends", "email"));
然后我用
LoginManager.getInstance().registerCallback(fbCallbackManager,
new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
System.out.println(loginResult.getAccessToken().toString());
GraphRequest request = GraphRequest.newMeRequest(
loginResult.getAccessToken(),
new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(
JSONObject object,
GraphResponse response) {
System.out.println(object.toString());
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "email");
request.setParameters(parameters);
request.executeAsync();
}
@Override
public void onCancel() {
// App code
}
@Override
public void onError(FacebookException exception) {
// App code
}
});
输出只是
{AccessToken token:ACCESS_TOKEN_REMOVED permissions:[public_profile, contact_email, user_friends, email, basic_info]}
{"id":"xxxxxxxxxxxxxxx"}
即使我删除了字段"部分,我也会得到一个包含一堆用户公共信息的 JSON,但从来没有电子邮件字段.我正在我自己的 Facebook 帐户上对此进行测试,并且我确实有一个与之关联的电子邮件地址.
Even if I remove the "fields" part, I get a JSON with a bunch of the user's public info, but never the email field. I'm testing this on my own Facebook account, and I do have an email address associated to it.
推荐答案
您可以通过以下方式获取登录用户的电子邮件,但请注意,
You can get the logged user email as follows , But note that ,
他们不保证您会获得电子邮件地址 阅读这里 .
在某些情况下,虽然用户提供了电子邮件,但如果电子邮件无效,则它不会通过请求发送.
In some cases, though user has provided an email, it will not come through request, if the email is not valid.
@Override
public void onSuccess(LoginResult loginResult) {
GraphRequest request = GraphRequest.newMeRequest( AccessToken.getCurrentAccessToken(),
new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject object,GraphResponse response) {
try {
String email=object.getString("email");
Log.d(TAG + "user email ", email);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
request.executeAsync();
}
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