android - java.lang.UnsupportedOperationException : Session: an attempt was made to request new permissions for a session that has a pending request 异常

Question

以下代码用于在android 中使用facebookSDK3.0 发布状态更新。如果我使用的是 UiLifeCycleHelper 类，则它运行良好。但是我想在不使用 UiLifeCycleHelper 类的情况下在 facebook 中发布状态。我尝试了下面的代码，它在我的 logcat 中抛出错误并且我的应用程序被强制关闭。

public class SampleFBPostActivity extends Activity implements OnClickListener {

private EditText mPostEditText;
private Button mDoneButton;
private Session mSession;
private PendingAction pendingAction = PendingAction.NONE;

private static final List<String> PERMISSIONS = Arrays.asList("publish_actions");
private enum PendingAction {
    NONE,
    POST_STATUS_UPDATE
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.fb_post);
    mPostEditText = (EditText) findViewById(R.id.post_text);
    mDoneButton = (Button) findViewById(R.id.done_button);
    mDoneButton.setOnClickListener(this);
    mSession = Session.getActiveSession();
    if (mSession == null) {
        mSession = new Session(this);
        Session.setActiveSession(mSession);
    }
    updateUI();
    handlePendingAction();
}

@Override
public void onClick(View v) {
    switch (v.getId()) {
    case R.id.done_button:
        onClickPostStatusUpdate();
        break;
    }
}

 private interface GraphObjectWithId extends GraphObject {
        String getId();
    }

 private void showPublishResult(String message, GraphObject result, FacebookRequestError error) {
        String title = null;
        String alertMessage = null;
        if (error == null) {
            title = getString(R.string.success);
            String id = result.cast(GraphObjectWithId.class).getId();
            alertMessage = getString(R.string.successfully_posted_post, message, id);
        } else {
            title = getString(R.string.error);
            alertMessage = error.getErrorMessage();
        }

        new AlertDialog.Builder(this)
                .setTitle(title)
                .setMessage(alertMessage)
                .setPositiveButton(R.string.ok, null)
                .show();
    }

    private void onClickPostStatusUpdate() {
        performPublish(PendingAction.POST_STATUS_UPDATE);
    }

    private void postStatusUpdate(final String message) {
        if (mSession != null && hasPublishPermission()) {
            Request request = Request
                    .newStatusUpdateRequest(Session.getActiveSession(), message, new Request.Callback() {
                        @Override
                        public void onCompleted(Response response) {
                            showPublishResult(message, response.getGraphObject(), response.getError());
                        }
                    });
            request.executeAsync();
        } else {
            pendingAction = PendingAction.POST_STATUS_UPDATE;
        }
    }

    private boolean hasPublishPermission() {
        Session session = Session.getActiveSession();
        return session != null && session.getPermissions().contains("publish_actions");
    }

    private void performPublish(PendingAction action) {
        Session session = Session.getActiveSession();
        if (session != null) {
            pendingAction = action;
            if (hasPublishPermission()) {
                handlePendingAction();
            } else {
                session.requestNewPublishPermissions(new Session.NewPermissionsRequest(this, PERMISSIONS));
            }
        }
    }

private void updateUI() {
    Session session = Session.getActiveSession();
    boolean enableButtons = (session != null && session.isOpened());
    mDoneButton.setEnabled(enableButtons);
}

 private void handlePendingAction() {
        PendingAction previouslyPendingAction = pendingAction;
        pendingAction = PendingAction.NONE;

        switch (previouslyPendingAction) {

            case POST_STATUS_UPDATE:
                postStatusUpdate(mPostEditText.getText().toString());
                break;
        }
    }
}

下面是 logcat 中的错误:

  02-09 14:00:36.126: E/AndroidRuntime(2396): java.lang.UnsupportedOperationException: Session: an attempt was made to request new permissions for a session that has a pending request.
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at com.facebook.Session.requestNewPermissions(Session.java:968)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at com.facebook.Session.requestNewPublishPermissions(Session.java:501)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at com.facebook.samples.sessionlogin.SampleFBPostActivity.performPublish(SampleFBPostActivity.java:113)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at com.facebook.samples.sessionlogin.SampleFBPostActivity.onClickPostStatusUpdate(SampleFBPostActivity.java:83)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at com.facebook.samples.sessionlogin.SampleFBPostActivity.onClick(SampleFBPostActivity.java:54)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at android.view.View.performClick(View.java:3511)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at android.view.View$PerformClick.run(View.java:14105)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at android.os.Handler.handleCallback(Handler.java:605)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at android.os.Handler.dispatchMessage(Handler.java:92)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at android.os.Looper.loop(Looper.java:137)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at android.app.ActivityThread.main(ActivityThread.java:4424)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at java.lang.reflect.Method.invokeNative(Native Method)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at java.lang.reflect.Method.invoke(Method.java:511)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
  02-09 14:00:36.126: E/AndroidRuntime(2396):   at dalvik.system.NativeStart.main(Native Method)

请帮助我解决问题，不要在您的解决方案中使用 UiLifeCycleHelper 类。提前致谢

Answer 1

是否有您不想使用 UiLifecycleHelper 的特殊原因？该类(class)专门用于让您的生活更轻松，因此您不会遇到这样的问题。

如果必须，最简单的方法是查看 UiLifecycleHelper 中的代码，并将它们复制到 Activity 中的适当方法。

对于您的特定 Activity ，我发现有两处错误:

1. 您不会随时打开 session (您直接调用 requestNewPublishPermissions，但需要先打开 session )。调用“新 session ”不会打开它。

2. 您没有覆盖 onActivityResult 方法，该方法是将信息传回 Activity session 所必需的。