java - 无法使用 SDK 打开 Facebook session

Question

我正在尝试在 Facebook 墙上发布消息，以下是我的代码示例:

 @Click (R.id.img_btn_facebook)
 @UiThread
 public void fbPostWall(){

    Session session = Session.getActiveSession();
    SessionState state = SessionState.OPENING;

    if (session == null)
      TestManager.getInstance().setActivity(getActivity()).setLoginListener(this).facebookLogin();

    Log.e("SESSION-STATUS", "" + session.getState());

    if (session != null || state.isOpened()){

        Log.e("FACEBOOK", "post link on the wall ...");
        Bundle params = new Bundle();
        params.putString("name", "This is a test");

        WebDialog feedDialog = (
                new WebDialog.FeedDialogBuilder(getActivity(),
                        session,
                        params))
                .setOnCompleteListener(new WebDialog.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(getActivity(),
                                        "Posted story, id: "+postId,
                                        Toast.LENGTH_SHORT).show();
                            } else {
                                // User clicked the Cancel button
                                Toast.makeText(getActivity().getApplicationContext(),
                                        "Publish cancelled",
                                        Toast.LENGTH_SHORT).show();
                            }
                        } else if (error instanceof FacebookOperationCanceledException) {
                            // User clicked the "x" button
                            Toast.makeText(getActivity().getApplicationContext(),
                                    "Publish cancelled",
                                    Toast.LENGTH_SHORT).show();
                        } else {
                            // Generic, ex: network error
                            Toast.makeText(getActivity().getApplicationContext(),
                                    "Error posting story",
                                    Toast.LENGTH_SHORT).show();
                        }
                    }
                })
                .build();
        feedDialog.show();
    }
}

当我单击“img_btn_facebook”按钮时，如果用户尚未使用 Facebook，则会打开登录 session 。之后，Log.e("SESSION-STATUS", ""+ session.getState());始终给出 SESSION-STATUS:OPENING 但重点是我总是从 Facebook SDK 收到此错误消息:com.facebook.FacebookException:尝试使用未打开的 session 。

有人可以帮我解决这个问题吗？我想在我的 Facebook 墙上发布一条消息，感谢我的 Android 应用程序。

Answer 1

您是否包含了 onActivityResult ？

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

在你的 list 文件中

<activity
        android:name="com.facebook.LoginActivity"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.Translucent.NoTitleBar" />

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

并确保您的 Facebook 应用程序中具有正确的哈希键值

要生成哈希 key ，请在主要 Activity 中包含以下代码行

try {
        PackageInfo info = getPackageManager().getPackageInfo(
                "com.facebook.samples.hellofacebook", 
                PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
            }
    } catch (NameNotFoundException e) {

    } catch (NoSuchAlgorithmException e) {

    }

您将在控制台中获得哈希 key ，将该 key 包含在 facebook devleopr 中