android - 无法将 Facebook 页面的提要添加到我的应用程序中

Question

我希望我的应用只显示 Facebook 页面发布的帖子，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取任何内容。我在 list 文件中包含了互联网访问权限。

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未经用户许可的情况下获取页面公共(public)提要!

解决方案

1. 获取页面Facebook Profile Id:最简单的方法是查询Graph API http://graph.facebook.com/ {你的页面用户名}。 例如适用于 oStream Android 应用 https://graph.facebook.com/oStreamApp将返回 Facebook 个人资料 ID 289781571139242

2. 请求 Facebook 页面提要的 RSS:向 https://www.facebook.com/feeds/page.php?format=rss20&id= 发出 http 请求{yourAppId} 例如对于 oStream Android App 公开 https://www.facebook.com/feeds/page.php?format=rss20&id=289781571139242

Android 实现 将只是:

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

旁注这个问题与 Android 无关，只是与 Facebook API 有关。