OrientationがLandscapeに変更された場合、MenuInflaterがClassNotFoundExceptionをスローします

Question

完全に機能しているAndroidアプリがポートレートモードにあります。それはonCreateOptionsMenuに集団であるドロップダウンシェアメニューにカスタムアクションバーのメニュー（APIレベル> 14）を使用しています：

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    super.onCreateOptionsMenu(menu); 
    MenuInflater mInflater = new MenuInflater(getApplicationContext()); 
    mInflater.inflate(R.menu.menu, menu); 

    mShareActionProvider = (ShareActionProvider) menu.findItem(R.id.menu_share).getActionProvider(); 
    // Set the share intent 
    Intent i = createShareIntent(); 
    if (i != null) 
     mShareActionProvider.setShareIntent(i); 

    // Searching 
    // Get the SearchView and set the searchable configuration 
    SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE); 
    SearchView searchView = (SearchView) menu.findItem(R.id.menu_search).getActionView(); 
    searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName())); 
    searchView.setIconifiedByDefault(false); // Do not iconify the widget; expand it by default 
    return true; 
} 

データはViewPagerAdaterによって表されます。

私は（AVDや自分の携帯電話のいずれか）の画面を回転させる場合は、MenuInflaterはjava.lang.ClassNotFoundExceptionエラーがスローされます。

03-14 13:21:39.563: W/dalvikvm(1354): dvmFindClassByName rejecting '' 
03-14 13:21:39.583: W/MenuInflater(1354): Cannot instantiate class: 
03-14 13:21:39.583: W/MenuInflater(1354): java.lang.ClassNotFoundException: 
03-14 13:21:39.583: W/MenuInflater(1354): at  dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61) 
03-14 13:21:39.583: W/MenuInflater(1354): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 
03-14 13:21:39.583: W/MenuInflater(1354): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.MenuInflater$MenuState.newInstance(MenuInflater.java:454) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.MenuInflater$MenuState.setItem(MenuInflater.java:415) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.MenuInflater$MenuState.addItem(MenuInflater.java:436) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.MenuInflater.parseMenu(MenuInflater.java:173) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.MenuInflater.inflate(MenuInflater.java:95) 
03-14 13:21:39.583: W/MenuInflater(1354): at net.stackueberflow.excusewidget.ExcuseBrowseActivity.onCreateOptionsMenu(ExcuseBrowseActivity.java:128) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.app.Activity.onCreatePanelMenu(Activity.java:2444) 
03-14 13:21:39.583: W/MenuInflater(1354): at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java:388) 
03-14 13:21:39.583: W/MenuInflater(1354): at com.android.internal.policy.impl.PhoneWindow.invalidatePanelMenu(PhoneWindow.java:739) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.app.Activity.invalidateOptionsMenu(Activity.java:2552) 
03-14 13:21:39.583: W/MenuInflater(1354): at net.stackueberflow.excusewidget.ExcuseBrowseActivity$ViewPagerAdapter.instantiateItem(ExcuseBrowseActivity.java:224) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.support.v4.view.PagerAdapter.instantiateItem(PagerAdapter.java:110) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:649) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.support.v4.view.ViewPager.populate(ViewPager.java:783) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1016) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.View.measure(View.java:12723) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.widget.LinearLayout.measureVertical(LinearLayout.java:812) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.widget.LinearLayout.onMeasure(LinearLayout.java:553) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.View.measure(View.java:12723) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.View.measure(View.java:12723) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.widget.LinearLayout.measureVertical(LinearLayout.java:812) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.widget.LinearLayout.onMeasure(LinearLayout.java:553) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.View.measure(View.java:12723) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293) 
03-14 13:21:39.583: W/MenuInflater(1354): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2092) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.View.measure(View.java:12723) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1064) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.os.Looper.loop(Looper.java:137) 
03-14 13:21:39.583: W/MenuInflater(1354): at android.app.ActivityThread.main(ActivityThread.java:4424) 
03-14 13:21:39.583: W/MenuInflater(1354): at java.lang.reflect.Method.invokeNative(Native Method) 
03-14 13:21:39.583: W/MenuInflater(1354): at java.lang.reflect.Method.invoke(Method.java:511) 
03-14 13:21:39.583: W/MenuInflater(1354): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
03-14 13:21:39.583: W/MenuInflater(1354): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
03-14 13:21:39.583: W/MenuInflater(1354): at dalvik.system.NativeStart.main(Native Method) 

ViewPagerAdapter内に新しいアイテムがあるときに、共有の意図を更新するinvalidateOptionsMenu();を呼び出しViewPagerAdapter.instantiateItem方法選択された。

Answer 1

この "dvmFindClassByNameは '' 拒否" のメッセージが

if (!validateClassName(name)) { 
    LOGW("dvmFindClassByName rejecting '%s'\n", name); 
    dvmThrowException("Ljava/lang/ClassNotFoundException;", name); 
    goto bail; 
} 

この機能によって表示されているので、あなたのクラスでこのマニフェスト

android:configChanges="orientation|keyboardHidden"></activity> 

にこの

@Override 
public void onConfigurationChanged(Configuration newConfig) { 
super.onConfigurationChanged(newConfig); 
} 

をこの PURをお試しください... 'name'のパラメータとして空の文字列 ''を取得していますオリエンテーションを変えて...私はそれがアクティビティが再開され、そのコンテキストがメニューインフレータに利用できないためだと思う。だから...これを試してみよう...