单击登录按钮后出现Andorid Facebook登录错误

Question

我有一个问题，Facebook登录按钮点击安卓。单击该按钮后，将显示错误页面，并显示消息“未登录:您未登录。请登录并重试”。

代码如下：

public class FacebookLoginFragment extends Fragment  {
private LoginButton loginButton;
private CallbackManager callbackManager;
public FacebookLoginFragment(){
    super();
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    callbackManager = CallbackManager.Factory.create();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.facebook_login_fragment, container, false);
    loginButton = (LoginButton) rootView.findViewById(R.id.login_button);
    loginButton.setReadPermissions("user_friends");
    loginButton.setFragment(this);
    loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
        @Override
        public void onSuccess(LoginResult loginResult) {
            System.out.println("Success");
            System.out.println(loginResult.getAccessToken());
        }

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

        @Override
        public void onError(FacebookException exception) {
            System.out.println("Error");
        }
    });
    return rootView;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    callbackManager.onActivityResult(requestCode, resultCode, data);
}

}

如果你想知道这是在com.facebook.android:facebook-android-sdk:4.1.0.上

Answer 1

使用此代码进行facebook登录。这对我很管用。

​

callbackManager = CallbackManager.Factory.create();

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 {
					String 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();
					}
					String name = object.getString("name");
					String email = object.getString("email");
					String gender = object.getString("gender");
					String 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());
	}
});

​

​

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

​