在登錄Facebook App並授權我的應用程序后，如何才能正確獲取訪問令牌和其他信息？ [Android]產品

Question

我正在使用它 。 在我的authorized()方法的Facebook.java中，我調用了startSingleSignOn和startDialogAuth ，我正在使用DEFAULT_AUTH_ACTIVITY_CODE而不是FORCE_DIALOG_AUTH

public void authorize（Activity activity，String [] permissions，int activityCode，final DialogListener listener）{

    boolean singleSignOnStarted = false;

    mAuthDialogListener = listener;

    // Prefer single sign-on, where available.
    if (activityCode >= 0) {
        singleSignOnStarted = startSingleSignOn(activity, mAppId,
                permissions, activityCode);
    }
    // Otherwise fall back to traditional dialog.
    if (!singleSignOnStarted) {
        startDialogAuth(activity, permissions);
    }
}

我注意到在我的startDialogAuth它設置了AccessToken和AccessExpires

private void startDialogAuth(Activity activity, String[] permissions) {

    Bundle params = new Bundle();
    if (permissions.length > 0) {
        params.putString("scope", TextUtils.join(",", permissions));
    }
    CookieSyncManager.createInstance(activity);
    dialog(activity, LOGIN, params, new DialogListener() {

        public void onComplete(Bundle values) {

            // ensure any cookies set by the dialog are saved
            CookieSyncManager.getInstance().sync();
            setAccessToken(values.getString(TOKEN));
            setAccessExpiresIn(values.getString(EXPIRES));
            if (isSessionValid()) {
                Util.logd("Facebook-authorize", "Login Success! access_token="
                        + getAccessToken() + " expires="
                        + getAccessExpires());

                mAuthDialogListener.onComplete(values);
            } else {
                mAuthDialogListener.onFacebookError(new FacebookError(
                                "Failed to receive access token."));
            }
        }

        public void onError(DialogError error) {
            Util.logd("Facebook-authorize", "Login failed: " + error);
            mAuthDialogListener.onError(error);
        }

        public void onFacebookError(FacebookError error) {
            Util.logd("Facebook-authorize", "Login failed: " + error);
            mAuthDialogListener.onFacebookError(error);
        }

        public void onCancel() {
            Util.logd("Facebook-authorize", "Login canceled");
            mAuthDialogListener.onCancel();
        }
    });
}

並且在startSingleSignOn它看起來像這樣

private boolean startSingleSignOn(Activity activity, String applicationId,
        String[] permissions, int activityCode) {
    boolean didSucceed = true;
    Intent intent = new Intent();

    intent.setClassName("com.facebook.katana",
            "com.facebook.katana.ProxyAuth");
    intent.putExtra("client_id", applicationId);

    if (permissions.length > 0) {
        intent.putExtra("scope", TextUtils.join(",", permissions));
    }

    // Verify that the application whose package name is
    // com.facebook.katana.ProxyAuth
    // has the expected FB app signature.
    if (!validateActivityIntent(activity, intent)) {
        return false;
    }

    mAuthActivity = activity;
    mAuthPermissions = permissions;
    mAuthActivityCode = activityCode;

    try {
        activity.startActivityForResult(intent, activityCode);
    } catch (ActivityNotFoundException e) {
        didSucceed = false;
    }

    return didSucceed;
}

我想知道它在哪里設置登錄時需要的Access Token ，我面臨的問題是用戶安裝了Facebook app程序並且已經授權我的應用程序，它只會顯示一個對話框（正在加載）並顯示一個白屏然后解雇但接下來沒有任何事情發生。 它不會從記錄的Facebook app獲取用戶的信息。 但是當用戶沒有Facebook app它會顯示WebView並且工作正常，它會正確登錄。 在調試它時我還注意到它沒有進入我的函數LoginDialogListener這里它實現了Facebook.DialogListener （當安裝了facebook app時）可能因為在startSingleSignOn它沒有調用CookieSyncManager.createInstance(activity); dialog(activity, LOGIN, params, new DialogListener() { CookieSyncManager.createInstance(activity); dialog(activity, LOGIN, params, new DialogListener() {

這是我的activity代碼，它調用facebook.authorize

public void setFacebookConnection() {
    facebook = new Facebook(Constants.FACEBOOK_APP_ID);
    facebookAsyncRunner = new AsyncFacebookRunner(facebook);

    facebook.authorize(this, Constants.FACEBOOK_PERMISSIONS, new LoginDialogListener());
}

private class LoginDialogListener implements Facebook.DialogListener {
    public void onComplete(Bundle values) {
        Log.d(TAG, "LoginONComplete");
        String token = facebook.getAccessToken();
        long token_expires = facebook.getAccessExpires();
        Log.d(TAG, "AccessToken: " + token);
        Log.d(TAG, "AccessExpires: " + token_expires);

        if (isPublishStreamAuthorized()) {
            facebookSharedPreferences = PreferenceManager
                    .getDefaultSharedPreferences(context);
            facebookSharedPreferences
                    .edit()
                    .putLong(Constants.FACEBOOK_ACCESS_EXPIRES,
                            token_expires).commit();
            facebookSharedPreferences.edit()
                    .putString(Constants.FACEBOOK_ACCESS_TOKEN, token)
                    .commit();
            facebookAsyncRunner.request("me", new IDRequestListener());
        } else {
            logoutFacebook();
        }

    }

    public void onFacebookError(FacebookError e) {
        Log.d(TAG, "FacebookError: " + e.getMessage());
    }

    public void onError(DialogError e) {
        Log.d(TAG, "Error: " + e.getMessage());
        Toast.makeText(getApplicationContext(), Constants.NO_INTERNET_CONNECTION,
                Toast.LENGTH_LONG).show();
    }

    public void onCancel() {
        Log.d(TAG, "OnCancel");
        logoutFacebook();
    }

}

看來我的facebook.getAccessToken(); 在我的活動中返回null，在調用facebook.authorize()后嘗試在我的setFacebookConnection()調用

你能幫我么？ 我需要盡快解決這個問題。 非常感謝。

更新

我找到了這個並嘗試了第3步，但它最終再次打開了WebView 。

***更新

我終於通過調用onActivityResult()獲取access token ，但是只有在我關閉應用程序並再次打開它之后才會顯示獲取數據這里是我的代碼，其中FACEBOOK_AUTH_RESULT_CODE值我將其更改為32665。

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == Constants.FACEBOOK_AUTH_RESULT_CODE) {
        facebook.authorizeCallback(requestCode, resultCode, data);
    } else {
        Log.e(TAG, "onActivityResult Error : Authentication Error");
    }
} 

Answer 1

gradle這個：

 compile 'com.facebook.android:facebook-android-sdk:[4,5)' 

strings.xml中

 <string name="facebook_app_id">YOUR_APP_ID</string> 

AndroidManifest.xml在'application'標簽內添加：

 <meta-data
        android:name="com.facebook.sdk.ApplicationId"
        android:value="@string/facebook_app_id" />

創建此以初始化FacebookSDK：

public class MainApp extends Application {

    @Override
    public void onCreate() {
        super.onCreate();
        FacebookSdk.sdkInitialize(getApplicationContext());
    }
}

將其添加到AndroidManifest.xml，將“application”標記作為名稱：

<application
    android:name=".MainApp"

在您的活動布局中添加Facebook登錄按鈕：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.app.FacebookLoginActivity">

 <com.facebook.login.widget.LoginButton
        android:id="@+id/login_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="30dp"
        android:layout_marginBottom="30dp" />

</RelativeLayout>

你的FacebookLoginActivity：在這里你可以獲得你的Facebook令牌。

public class FacebookLoginActivity extends AppCompatActivity{

private CallbackManager callbackManager;
private LoginButton loginButton;
private String FB_TOKEN;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_signin);
    callbackManager = CallbackManager.Factory.create();
    loginButton = (LoginButton) findViewById(R.id.login_button);
    loginButton.setReadPermissions("public_profile", "user_friends", "email", "user_birthday");
    loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
        @Override
        public void onSuccess(LoginResult loginResult) {

            /**
             * HERE YOU CAN GET YOUR FACEBOOK TOKEN!!!!
             **/
            FB_TOKEN=loginResult.getAccessToken().getToken();
        }

        @Override
        public void onCancel() {
        }

        @Override
        public void onError(FacebookException exception) {
        }
    });
}

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

}

如果您需要使用自定義Facebook按鈕：

public class FacebookLoginActivity extends AppCompatActivity{

private CallbackManager callbackManager;
private Button loginButton;
private String FB_TOKEN;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_signin);
    callbackManager = CallbackManager.Factory.create();
    loginButton = (Button) findViewById(R.id.login_button);
    LoginManager.getInstance().registerCallback(callbackManager,
            new FacebookCallback<LoginResult>() {
                @Override
                public void onSuccess(LoginResult loginResult) {
                    /**
                    * HERE YOU CAN GET YOUR FACEBOOK TOKEN!!!!
                    **/
                    FB_TOKEN=loginResult.getAccessToken().getToken();
                }

                @Override
                public void onCancel() {
                }

                @Override
                public void onError(FacebookException exception) {
                    Log.e("onError", exception.getMessage());
                }
            });
    loginButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                LoginManager.getInstance().logInWithReadPermissions(FacebookLoginActivity.this, Arrays.asList("public_profile", "user_friends", "email"));
            }
    });
}

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

}

Answer 2

1）您不需要使用'provider'標簽。

2）com.facebook.FacebookActivity是Facebook自己的活動，FacebookLoginActivity - 你的。

3）只需使用此代碼獲取性別，區域設置，驗證，電子郵件：

    GraphRequest request = GraphRequest.newMeRequest(
        AccessToken.getCurrentAccessToken(),
        new GraphRequest.GraphJSONObjectCallback() {
            @Override
            public void onCompleted(
                    JSONObject object,
                    GraphResponse response) {
            }
        });
    Bundle parameters = new Bundle();
    parameters.putString("fields", "id,name,gender,verified,locale,email");
    request.setParameters(parameters);
    request.executeAsync();

你能分享一下你的課嗎？ 我需要有關“對LoginManager.onActivityResult的意外調用”的更多信息