在facebook登录时按回的例外情况

Question

我使用FB-android-SDK 3.0.在SSO时,如果我在Facebook登录页面(FB应用程序)上按回按钮,则会生成异常.这是堆栈跟踪.

01-11 22:35:07.146: E/AndroidRuntime(13076): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=64206, result=0, data=null} to activity {com.nitinbansal85.android.testfacebook1/com.facebook.LoginActivity}: java.lang.NullPointerException
01-11 22:35:07.146: E/AndroidRuntime(13076):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3386)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at android.app.ActivityThread.handleSendResult(ActivityThread.java:3428)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at android.app.ActivityThread.access$2700(ActivityThread.java:125)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1944)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at android.os.Handler.dispatchMessage(Handler.java:99)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at android.os.Looper.loop(Looper.java:123)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at android.app.ActivityThread.main(ActivityThread.java:4420)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at java.lang.reflect.Method.invokeNative(Native Method)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at java.lang.reflect.Method.invoke(Method.java:521)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:924)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:682)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at dalvik.system.NativeStart.main(Native Method)
01-11 22:35:07.146: E/AndroidRuntime(13076): Caused by: java.lang.NullPointerException
01-11 22:35:07.146: E/AndroidRuntime(13076):    at com.facebook.AuthorizationClient$KatanaProxyAuthHandler.onActivityResult(AuthorizationClient.java:645)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at com.facebook.AuthorizationClient.onActivityResult(AuthorizationClient.java:142)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at com.facebook.LoginActivity.onActivityResult(LoginActivity.java:134)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at android.app.Activity.dispatchActivityResult(Activity.java:3828)
01-11 22:35:07.146: E/AndroidRuntime(13076):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3382)

我已经包装了执行SSO的代码FacebookOperationCanceledException,但它没有被抛出.

我在这里错过了什么吗？

编辑:应用程序崩溃!

Answer 1

这是一个报道的bug:facebook bug报告

这是我的解决方法:

String errorMessage = "Login cancelled!";
            if(data != null && data.getStringExtra("error") != null)
            {
                errorMessage = data.getStringExtra("error");
            }

outcome = Result.createCancelResult(errorMessage );

您可以在第645行的AuthorizationClient.java中进行这些修改