适用于Android 3.0的Facebook SDK：UnsupportedOperationException

Question

 01-29 21:06:00.601: ERROR/AndroidRuntime(582): FATAL EXCEPTION: main
     java.lang.IllegalStateException: Could not execute method of the activity
     at android.view.View$1.onClick(View.java:2144)
     at android.view.View.performClick(View.java:2485)
     at android.view.View$PerformClick.run(View.java:9080)
     at android.os.Handler.handleCallback(Handler.java:587)
     at android.os.Handler.dispatchMessage(Handler.java:92)
     at android.os.Looper.loop(Looper.java:130)
     at android.app.ActivityThread.main(ActivityThread.java:3687)
     at java.lang.reflect.Method.invokeNative(Native Method)
     at java.lang.reflect.Method.invoke(Method.java:507)
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
     at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.reflect.InvocationTargetException
     at java.lang.reflect.Method.invokeNative(Native Method)
     at java.lang.reflect.Method.invoke(Method.java:507)
     at android.view.View$1.onClick(View.java:2139)
     ... 11 more
     Caused by: java.lang.UnsupportedOperationException: Session: an attempt was made to request new permissions for a session that is not currently open.
     at com.facebook.Session.requestNewPermissions(Session.java:977)
     at com.facebook.Session.requestNewPublishPermissions(Session.java:501)
     at ***.MainActivity.postToFacebook(MainActivity.java:105)
     ... 14 more

抛出异常

 session.requestNewPublishPermissions(newPermissionsRequest);
 // Check for publish permissions
            List<String> permissions = session.getPermissions();
            if (!isSubsetOf(PERMISSIONS, permissions)) {
                pendingPublishReauthorization = true;
                Session.NewPermissionsRequest newPermissionsRequest = new Session
                        .NewPermissionsRequest(this, PERMISSIONS);


                session.requestNewPublishPermissions(newPermissionsRequest);


                Toast.makeText(getActivity().getApplicationContext(),
                        "Not enough permissions",
                        Toast.LENGTH_SHORT).show();
                return;
            }

此异常是什么意思以及如何解决？

Answer 1

Dmytro，根据我的评论，我整理了几篇文章，全面解释了如何打开Facebook会话并请求其他权限： 此处和此处 。 希望您和其他人发现它有益，并节省使用SDK的时间！ :)

编辑：之所以收到此异常，是因为您无法在未打开的会话上请求新的权限。 您需要在请求新权限或发出其他Facebook API请求之前打开会话。 我在上面链接的文章中汇总了一个指南，以确保在打开用户会话并具有所需权限之前，不会发出Facebook API请求（例如，发布到用户的供稿等）。

Answer 2

这意味着您正在请求其权限的会话处于非活动状态/已过期。 您需要请求之前重新建立会话。

Answer 3

您是否在调用requestNewPublishPermissions之前调用了session.openForPublish（Session.OpenRequest openRequest）？