无法将Facebook页面的Feed添加到我的应用程序中

Question

我希望我的应用程序只显示Facebook页面发布的帖子,而无需任何身份验证.这是代码:

public class Main extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    try {
    String APP_ID = "1234567890";         
    String APP_SECRET = "1a2b3c4defghijk";
    String OWNER_OF_FEED = "somepage";

    HttpClient client = new DefaultHttpClient();
    HttpGet get = new HttpGet(
            "https://graph.facebook.com/oauth/access_token?client_id="+ 
            APP_ID + 
            "&client_secret="+APP_SECRET+"&grant_type=client_credentials");

    ResponseHandler<String> responseHandler = new BasicResponseHandler();

    String access_token = client.execute(get, responseHandler);

    String uri = "https://graph.facebook.com/" + OWNER_OF_FEED + "/feed?"
            + access_token;

    get = new HttpGet(uri);
    String responseBody = client.execute(get, responseHandler);

    // responseBody contains JSON-encoded feed

    //textview.setText(responseBody);
    TextView txtv = (TextView) findViewById(R.id.feed);
    txtv.setText(String.valueOf(responseBody)); 
    }

    catch (Exception ex) {
        ex.printStackTrace();
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}
}

但我无法在应用程序上获得任何内容.我已在清单文件中包含了Internet访问权限.

新代码:

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        URL url;
        try {
            url = new URL("https://www.facebook.com/feeds/page.php?format=rss20&id=289781571139242");

            HttpURLConnection urlConnection = (HttpURLConnection) url
                    .openConnection();

            InputStream in = urlConnection.getInputStream();

            InputStreamReader isw = new InputStreamReader(in);

            int data = isw.read();
            while (data != -1) {
                char current = (char) data;
                data = isw.read();
                System.out.print(current);
            }
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

}

Answer 1

实际上有一种方法可以在没有用户许可的情况下获取页面公共源!

解

1. 获取页面Facebook Profile Id:最简单的方法是查询Graph API http://graph.facebook.com/ {YourPageUsername}.例如对于oStream Android App https://graph.facebook.com/oStreamApp将返回Facebook Profile Id 289781571139242

2. 请求Facebook页面订阅源的RSS:向https://www.facebook.com/feeds/page.php?format=rss20&id= {yourAppId} 发出http请求,例如对于oStream Android App,公共https:// www. facebook.com/feeds/page.php?format=rss20&id=289781571139242

一个Android的实施将仅仅是:

1. 向http://graph.facebook.com/ {YourPageUsername} 发出http请求
2. 解析内容并获取YourPageId
3. 发出http请求https://www.facebook.com/feeds/page.php?format=rss20&id= {yourAppId}
4. 解析内容
5. 根据需要显示内容

旁注 这个问题并不是关于Android,而只是关于Facebook API.

Answer 2

我已经使用访问令牌完成了它.在Facebook开发人员"工具/访问令牌工具"中有一个工具你将获得一个名为"app token"的访问令牌,你可以这样使用:https: //graph.facebook.com/ "你的Facebook ID"/feed？ access_token = "您的应用令牌" ;

然后你将获得你的feed的json对象,你将能够使用JSON解析方法做任何你想做的事情.

在有人更改密码或尝试在Facebook的应用管理页面中获取另一个"app secret id"之前,您的应用令牌不会移动.请享用!