android - Android: OptionsMenu の作成中に Invocation Target Exception が発生する

Question

私は実装OptionsMenuしており、アイテムはプロジェクトのメニューフォルダーにあるxmlファイルから読み取られますres/menu/menu.xml。OnCreateOptionsMenuメソッドと を オーバーライドした後、onOptionsItemSelectedを受け取っていInvocation Target Exceptionます。メソッドは次のとおりです。

@Override
    public boolean onCreateOptionsMenu(Menu menu) {

        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu, menu);
        return true;
    }

ItemSelected メソッド

@Override
    public boolean onOptionsItemSelected(MenuItem item)
    {
             switch (item.getItemId())
             {
             case R.id.menu_bookmark:
                 // Single menu item is selected do something
                 // Ex: launching new activity/screen or show alert message
                 Toast.makeText(FullscreenActivity.this, "Bookmark is Selected", Toast.LENGTH_SHORT).show();
                 return true;

             case R.id.menu_save:
                 Toast.makeText(FullscreenActivity.this, "Save is Selected", Toast.LENGTH_SHORT).show();
                 return true;

             case R.id.menu_search:
                 Toast.makeText(FullscreenActivity.this, "Search is Selected", Toast.LENGTH_SHORT).show();
                 return true;

             case R.id.menu_share:
                 Toast.makeText(FullscreenActivity.this, "Share is Selected", Toast.LENGTH_SHORT).show();
                 return true;

             case R.id.menu_delete:
                 Toast.makeText(FullscreenActivity.this, "Delete is Selected", Toast.LENGTH_SHORT).show();
                 return true;

             case R.id.menu_preferences:
                 Toast.makeText(FullscreenActivity.this, "Preferences is Selected", Toast.LENGTH_SHORT).show();
                 return true;

             default:
                 return super.onOptionsItemSelected(item);
             }

    }

ここにmenu.xmlがあります

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+id/menu_bookmark"
          android:title="Bookmark" />

    <item android:id="@+id/menu_save"
          android:title="Save" />

    <item android:id="@+id/menu_search"
          android:title="Search" />

    <item android:id="@+id/menu_share"
          android:title="Share" />

    <item android:id="@+id/menu_delete"
          android:title="Delete" /> 

    <item android:id="@+id/menu_preferences"
          android:title="Preferences" />
</menu>

ログキャット

        06-21 12:23:42.875: I/ActivityManager(89): START {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.app.wabicountermanager/.FullscreenActivity} from pid 2436
06-21 12:23:43.125: I/ActivityManager(89): Start proc com.app.wabicountermanager for activity com.app.wabicountermanager/.FullscreenActivity: pid=2446 uid=10040 gids={3003}
06-21 12:23:45.815: E/AndroidRuntime(2446): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.app.wabicountermanager/com.app.wabicountermanager.FullscreenActivity}: android.view.WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running?
06-21 12:23:45.815: E/AndroidRuntime(2446):     at com.app.wabicountermanager.FullscreenActivity.onCreate(FullscreenActivity.java:73)
06-21 12:23:46.205: W/ActivityManager(89):   Force finishing activity com.app.wabicountermanager/.FullscreenActivity
06-21 12:23:46.725: W/ActivityManager(89): Activity pause timeout for ActivityRecord{410643e8 com.app.wabicountermanager/.FullscreenActivity}
06-21 12:23:57.166: W/ActivityManager(89): Activity destroy timeout for ActivityRecord{410643e8 com.app.wabicountermanager/.FullscreenActivity}

例外の詳細

WabiCounterManager [Android Application]    
WabiCounterManager [Android Application]    
    DalvikVM[localhost:8652]    
        Thread [<1> main] (Suspended (exception RuntimeException))  
            ActivityThread.performLaunchActivity(ActivityThread$ActivityClientRecord, Intent) line: 1956    
            ActivityThread.handleLaunchActivity(ActivityThread$ActivityClientRecord, Intent) line: 1981 
            ActivityThread.access$600(ActivityThread, ActivityThread$ActivityClientRecord, Intent) line: 123    
            ActivityThread$H.handleMessage(Message) line: 1147  
            ActivityThread$H(Handler).dispatchMessage(Message) line: 99 
            Looper.loop() line: 137 
            ActivityThread.main(String[]) line: 4424    
            Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]  
            Method.invoke(Object, Object...) line: 511  
            ZygoteInit$MethodAndArgsCaller.run() line: 784  
            ZygoteInit.main(String[]) line: 551 
            NativeStart.main(String[]) line: not available [native method]  
        Thread [<10> Binder Thread #2] (Running)    
        Thread [<9> Binder Thread #1] (Running) 
        Daemon Thread [<8> FinalizerWatchdogDaemon] (Running)   
        Daemon Thread [<7> FinalizerDaemon] (Running)   

私は欠けているものを手に入れませんでした。ありがとう