我正在尝试将facebook集成到我的Android应用程序中进行登录。由于跟随错误，我无法做到这一点，所以我尝试了同样的Facebook样本之一“Scrumptious”。我在logcat上获得以下日志。我正在使用Facebook Sdk 3.5并且以下日志来自Facebook的Scrumptious Sample。
12-15 12:14:28.800: W/Bundle(20526): Key com.facebook.platform.protocol.PROTOCOL_VERSION expected String but value was a java.lang.Integer. The default value <null> was returned.
12-15 12:14:28.810: W/Bundle(20526): Attempt to cast generated internal exception:
12-15 12:14:28.810: W/Bundle(20526): java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String
12-15 12:14:28.810: W/Bundle(20526): at android.os.Bundle.getString(Bundle.java:1061)
12-15 12:14:28.810: W/Bundle(20526): at android.content.Intent.getStringExtra(Intent.java:4256)
12-15 12:14:28.810: W/Bundle(20526): at com.facebook.AuthorizationClient$KatanaLoginDialogAuthHandler.tryAuthorize(AuthorizationClient.java:821)
12-15 12:14:28.810: W/Bundle(20526): at com.facebook.AuthorizationClient.tryCurrentHandler(AuthorizationClient.java:272)
12-15 12:14:28.810: W/Bundle(20526): at com.facebook.AuthorizationClient.tryNextHandler(AuthorizationClient.java:238)
12-15 12:14:28.810: W/Bundle(20526): at com.facebook.AuthorizationClient$GetTokenAuthHandler.getTokenCompleted(AuthorizationClient.java:772)
12-15 12:14:28.810: W/Bundle(20526): at com.facebook.AuthorizationClient$GetTokenAuthHandler$1.completed(AuthorizationClient.java:731)
12-15 12:14:28.810: W/Bundle(20526): at com.facebook.internal.PlatformServiceClient.callback(PlatformServiceClient.java:144)
12-15 12:14:28.810: W/Bundle(20526): at com.facebook.internal.PlatformServiceClient.handleMessage(PlatformServiceClient.java:128)
12-15 12:14:28.810: W/Bundle(20526): at com.facebook.internal.PlatformServiceClient$1.handleMessage(PlatformServiceClient.java:54)
12-15 12:14:28.810: W/Bundle(20526): at android.os.Handler.dispatchMessage(Handler.java:99)
12-15 12:14:28.810: W/Bundle(20526): at android.os.Looper.loop(Looper.java:137)
12-15 12:14:28.810: W/Bundle(20526): at android.app.ActivityThread.main(ActivityThread.java:4929)
12-15 12:14:28.810: W/Bundle(20526): at java.lang.reflect.Method.invokeNative(Native Method)
12-15 12:14:28.810: W/Bundle(20526): at java.lang.reflect.Method.invoke(Method.java:511)
12-15 12:14:28.810: W/Bundle(20526): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:798)
12-15 12:14:28.810: W/Bundle(20526): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:565)
12-15 12:14:28.810: W/Bundle(20526): at dalvik.system.NativeStart.main(Native Method)
12-15 12:17:37.910: D/dalvikvm(20526): WAIT_FOR_CONCURRENT_GC blocked 0ms
12-15 12:17:37.990: D/dalvikvm(20526): GC_EXPLICIT freed 3341K, 32% free 9340K/13699K, paused 12ms+4ms, total 73ms
12-15 12:17:37.990: W/CursorWrapperInner(20526): Cursor finalized without prior close()
当我按“使用facebook登录”按钮时，应用程序每次都会询问权限。
感谢您的帮助。 祝你周日愉快