我集成了 facebook 共享，前几天运行良好，但今天就在问这个问题前 2 小时，我遇到了这个问题。

我正在使用此代码进行登录:

  Session.openActiveSession(this, true, new Session.StatusCallback() {

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

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

      // callback after Graph API response with user object
      @Override
      public void onCompleted(GraphUser user, Response response) {
        if (user != null) {
       
          Toast.makeText(ImagePagerActivity.this, user.getName()+" Logged In...", Toast.LENGTH_LONG).show();
        }
      }
    }).executeAsync();
  }
}
});
publishFeedDialog();

问题出在 if() 条件中，它始终为 false，而且我使用了 session.isOpened() 也返回 false，我很困惑为什么会这样。

我已经在 list 中声明了 INTERNET、ACCESSNETWORKSTATE、权限

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

请帮忙...

编辑

这是我实现的代码，你可以看到onCreateOptionsMenu，onOptionsItemSelected，onActivityResult，publishFeedDialog

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.action_bar_share_menu, menu);
        MenuItem item = menu.findItem(R.id.menu_item_share1);
     
    
        return true;
    }
@Override

public boolean      onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_item_share1: // facebook item selected
Toast.makeText(this, "Menu Item 1 selected", Toast.LENGTH_SHORT).show();
//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 (state.isOpened()) {

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

      // callback after Graph API response with user object
      @Override
      public void onCompleted(GraphUser user, Response response) {
        if (user != null) {
       
          Toast.makeText(ImagePagerActivity.this, user.getName()+" Logged In...", Toast.LENGTH_LONG).show();
        }
      }
    }).executeAsync();
  }
}
});
publishFeedDialog();

}
return true;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    
    uiHelper.onActivityResult(requestCode, resultCode, data, new FacebookDialog.Callback() {
        @Override
        public void onError(FacebookDialog.PendingCall pendingCall, Exception error, Bundle data) {
            Log.e("Activity", String.format("Error: %s", error.toString()));
        }

        @Override
        public void onComplete(FacebookDialog.PendingCall pendingCall, Bundle data) {
            Log.i("Activity", "Success!");
        }
    });
    
}
@Override
protected void onResume() {
    super.onResume();
    uiHelper.onResume();
}

@Override
protected void onSaveInstanceState(Bundle outState) {
    outState.putInt(STATE_POSITION, pager.getCurrentItem());
    super.onSaveInstanceState(outState);
    uiHelper.onSaveInstanceState(outState);
}

@Override
public void onPause() {
    super.onPause();
    uiHelper.onPause();
}

@Override
public void onDestroy() {
    super.onDestroy();
    uiHelper.onDestroy();
}

private void publishFeedDialog() {
    
    Log.v("pos",""+pos);
    Bundle params = new Bundle();
    params.putString("name", ItemListApplication.names.get(pos).getItem());
    params.putString("caption", "Irrational beliefs");
    params.putString("description",ItemListApplication.names.get(pos).getDesc() );
    params.putString("link", "https://www.facebook.com/vivek.warde.3?ref=tn_tnmn");
    
    if(pos==0) params.putString("picture","http://i.imgur.com/lOIUcW2.jpg");
    else params.putString("picture",imageUrls[pos]);
    WebDialog feedDialog = (
        new WebDialog.FeedDialogBuilder(this,
            Session.getActiveSession(),
            params))
        .setOnCompleteListener(new OnCompleteListener() {

            @Override
            public void onComplete(Bundle values,
                FacebookException error) {
                if (error == null) {
                    // When the story is posted, echo the success
                    // and the post Id.
                    final String postId = values.getString("post_id");
                    if (postId != null) {
                        Toast.makeText(ImagePagerActivity.this,
                            "Posted story, id: "+postId,
                            Toast.LENGTH_SHORT).show();
                    } else {
                        // User clicked the Cancel button
                        Toast.makeText(ImagePagerActivity.this, 
                            "Publish cancelled", 
                            Toast.LENGTH_SHORT).show();
                    }
                } else if (error instanceof FacebookOperationCanceledException) {
                    // User clicked the "x" button
                    Toast.makeText(ImagePagerActivity.this, 
                        "Publish cancelled", 
                        Toast.LENGTH_SHORT).show();
                } else {
                    // Generic, ex: network error
                    Toast.makeText(ImagePagerActivity.this, 
                        "Error posting story", 
                        Toast.LENGTH_SHORT).show();
                }
            }

        })
        .build();
    feedDialog.show();
}

最佳答案

处理这个问题可能有很多原因。你应该检查其中的一些:

我正在使用此代码通过 facebook 登录:

class MyFragment extends Fragment {
   //... some code

   SessionStatusCallback statusCallback = new SessionStatusCallback();

   public void login() {
       Session session = Session.getActiveSession();
       if (!session.isOpened() && !session.isClosed()) {
           session.openForRead(new Session.OpenRequest(this).setCallback(statusCallback));
       } else {
           Session.openActiveSession(getActivity(), this, true, statusCallback);
       }
   }

   private class SessionStatusCallback implements Session.StatusCallback {
       @Override
       public void call(Session session, SessionState state, Exception exception) {
           if (exception != null) {
               handleException(exception);
           }
           if (state.isOpened()) {
               afterLogin();
           } else if (state.isClosed()) {
               afterLogout();
           }
        }
    }

}

如果 session 未打开，您应该打开它以供阅读(如果需要，也可以打开 publish)。

检查AndroidManifest文件中的meta-data标签，是否有正确的application id？

经常发生错误不是在 android 应用程序中，而是在 facebook 应用程序设置中。在 facebook 应用程序的设置页面中应该是正确的包名称，并且您应该为您的应用程序添加 key 哈希(每种发布类型都不同，在大多数情况下是调试和发布)。

要获取哈希键，您可以运行脚本

keytool -exportcert -alias YOUR_ALIAS -keystore PATH_TO_KEYSTORE_FILE | openssl sha1 -binary | openssl base64

或者你可以在代码中获取它:

PackageInfo info;
try {
    info = getPackageManager().getPackageInfo("YOUR_APP_PACKAGE", PackageManager.GET_SIGNATURES);
    for (Signature signature : info.signatures) {
        MessageDigest md;
        md = MessageDigest.getInstance("SHA");
        md.update(signature.toByteArray());
        String keyhash = new String(Base64.encode(md.digest(), 0));
        //string something is what you should paste as key hash
        Log.e("hash key", keyhash);
    }
} catch (NameNotFoundException e1) {
    Log.e("name not found", e1.toString());
} catch (NoSuchAlgorithmException e) {
    Log.e("no such an algorithm", e.toString());
} catch (Exception e) {
    Log.e("exception", e.toString());
} 

在 Facebook 应用程序的设置页面中，您应该将应用程序公开。或者，如果您仍然不想将其公开，您应该为所有可以使用您的 Android 应用程序的用户添加角色(在“角色”选项卡中)。

另外，如果没有帮助，尝试调试方法
public void call(Session session ，SessionState状态，Exception异常)
经常出现授权不成功的正常提示

关于android - com.facebook.FacebookException : Attempted to use a Session that was not open，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24656830/