session.isOpened（）返回false，即使成功登录到Facebook [英] session.isOpened() returns false even if successfully logged in to Facebook

问题描述

我是新来的Facebook +原生的Andr​​oid。我乖乖地跟在他们的网站的步骤，但我一直在接受假导致session.isOpened（）方法，即使我成功登录使用Facebook的。我相信我已正确设置散列键，包名和类名。你能帮我什么是这个code中的问题？

 公共类MainActivity延伸活动{  @覆盖
  公共无效的onCreate（捆绑savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.activity_main）;    //启动的Facebook登录
    Session.openActiveSession（这一点，真正的，新的Session.StatusCallback（）{      //回调时，会话状态变化
      @覆盖
      公共无效呼叫（会话的会话，SessionState会状态，异常除外）{          如果（session.isOpened（））{          //使请求/我API
          Request.executeMeRequestAsync（会话，新Request.GraphUserCallback（）{            //后用户对象图形API响应回调
            @覆盖
            公共无效onCompleted（GraphUser用户，响应响应）{
              如果（用户！= NULL）{
                欢迎TextView的=（的TextView）findViewById（R.id.welcome）;
                welcome.setText（你好+ user.getName（）+！）;
              }
            }
          }）;
        }
      }
    }）;
  }  @覆盖
  公共无效的onActivityResult（INT申请code，INT结果code，意图数据）{
      super.onActivityResult（要求code，结果code，数据）;
      Session.getActiveSession（）的onActivityResult（这一点，要求code，结果code，数据）。
  }
 

解决方案

是的，我终于能够解决这个问题。

问题从我在Facebook的应用程序设置中设置了不正确的散列键如雨后春笋般涌现。

要正确生成散列键，使用的Java6因为Facebook需要此版本。我尝试使用java7目录，但没有奏效。

请参见下面的步骤正确生成通过回答哈希键 Vizzz

链接

I am new to Facebook + native Android. I obediently followed the steps in their website but I keep on receiving "false" result in session.isOpened() method even if I successfully logged in using Facebook. I believe I have set correctly the hash key, package name and class name. Could you please help me what's the problem in this code?

public class MainActivity extends Activity {

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

    // start Facebook Login
    Session.openActiveSession(this, true, new Session.StatusCallback() {

      // callback when session changes state
      @Override
      public void call(Session session, SessionState state, Exception exception) {

          if (session.isOpened()) {

          // make request to the /me API
          Request.executeMeRequestAsync(session, new Request.GraphUserCallback() {

            // callback after Graph API response with user object
            @Override
            public void onCompleted(GraphUser user, Response response) {
              if (user != null) {
                TextView welcome = (TextView) findViewById(R.id.welcome);
                welcome.setText("Hello " + user.getName() + "!");
              }
            }
          });
        }
      }
    });


  }

  @Override
  public void onActivityResult(int requestCode, int resultCode, Intent data) {
      super.onActivityResult(requestCode, resultCode, data);
      Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
  }

解决方案

Yes, finally I was able to solve this.

The problem sprung from the incorrect hash key I set in my Facebook App Settings.

To correctly generate hash key, use java6 because Facebook requires this version. I tried using java7 but it didn't work.

Please see below the correct steps in generating hash key answered by Vizzz

LINK

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