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so im really confused on how the facebook login works with aws cognito in android. I was able to hook aws cognito up and the facebook log in just fine. The aws cognito guide gives me these lines of code:

 Map<String, String> logins = new HashMap<String, String>();
        logins.put("graph.facebook.com", AccessToken.getCurrentAccessToken().getToken());
        credentialsProvider.setLogins(logins);

couple questions: 1.Where do i put these lines of code? 2.How do i set up cognito user equal to the login facebook user? 3.And basically, whats a working example of this?

Hope you guys can help!

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2 回答 2

1

这是以下代码，我在其中使用了来自 congnito 的联合身份的 facebook 登录。首先，您需要使用适当的登录凭据和池详细信息设置 CognitoSyncManagerFile。然后下面的代码如下。

//initialize the facebook SDK 
 FacebookSdk.sdkInitialize(getApplicationContext());

 //If access token is already here, set fb session
        final AccessToken fbAccessToken = AccessToken.getCurrentAccessToken();
        if (fbAccessToken != null) {
            setFacebookSession(fbAccessToken);
        //    btnLoginFacebook.setVisibility(View.GONE);
        }

btnLoginFacebook = (Button) findViewById(R.id.btnLoginFacebook);
        btnLoginFacebook.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // start Facebook Login
                LoginManager.getInstance().logInWithReadPermissions(MainActivity.this, Arrays.asList("public_profile"));
                LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
                    @Override
                    public void onSuccess(LoginResult loginResult) {
                        btnLoginFacebook.setVisibility(View.GONE);
                        new GetFbName(loginResult).execute();
                        setFacebookSession(loginResult.getAccessToken());
                    }

                    @Override
                    public void onCancel() {
                        Toast.makeText(MainActivity.this, "Facebook login cancelled",
                                Toast.LENGTH_LONG).show();
                    }

                    @Override
                    public void onError(FacebookException error) {
                        Toast.makeText(MainActivity.this, "Error in Facebook login " +
                                error.getMessage(), Toast.LENGTH_LONG).show();
                    }
                });
            }
        });





//Set the session with the following method
      private void setFacebookSession(AccessToken accessToken) {
                Log.i(TAG, "facebook token: " + accessToken.getToken());
                CognitoSyncClientManager.addLogins("graph.facebook.com",
                        accessToken.getToken());


            }

有关更多信息，请访问以下网址

https://github.com/awslabs/aws-sdk-android-samples/tree/master/CognitoSyncDemo

于 2017-01-19T10:09:11.093 回答
0

  1. 将其放在您的凭据提供程序已经初始化的位置，您刚刚为相关用户登录 Facebook。

  2. 将其包含在登录映射中后，调用 credentialsProvider.refresh()。这会将登录名链接到用户的身份。

  3. 官方AWS 示例存储库有一个 android 示例可以完成所有这些操作。

于 2017-01-16T19:18:29.673 回答