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POIssue with onPrepareOptionMenu and CustomSearchView (cannot instantiate class)
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2013-08-30T04:52:39.687
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I have a menu which maintains a <code>CustomSearchView</code>. Because I want to switch between 3 tabs (fragments) in <code>MainActivity</code> so I made 3 menu .xml file correlative each tab. To witch actionbar's menu I use <code>onPrepareOptionMenu</code> following: <pre><code>@Override public boolean onPrepareOptionsMenu(Menu menu) { if (menu != null && menu.hasVisibleItems()) menu.clear(); switch ((int) viewPager.getCurrentItem()) { case 0: Log.d(TAG, "onPrepareOptionsMenu " + viewPager.getChildCount() + " " + viewPager.getCurrentItem()); getMenuInflater().inflate(R.menu.searching_menu, menu); //line 99 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) { SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE); MenuItem item = menu.findItem(R.id.searchview); customSearchView = (CustomSearchView) item.getActionView(); //line 103 customSearchView.setSearchableInfo(searchManager .getSearchableInfo(getComponentName())); customSearchView.setSaveSearchTextState(true); customSearchView.setIconifiedByDefault(false); customSearchView .setOnStatefulQueryTextListener(new android.widget.SearchView.OnQueryTextListener() { @Override public boolean onQueryTextChange(String query) { searchingFragment.loadResultFound(query); return true; } @Override public boolean onQueryTextSubmit(String query) { return true; } }); } mSearchBySpinner = (Spinner) menu.findItem(R.id.search_by_spinner); View view = ((MenuItem) mSearchBySpinner).getActionView(); if (view instanceof Spinner) { Spinner spinner = (Spinner) view; spinner.setAdapter(ArrayAdapter.createFromResource( getApplicationContext(), R.array.searchby, android.R.layout.simple_spinner_dropdown_item)); } break; case 1: Log.d(TAG, "onPrepareOptionsMenu " + viewPager.getChildCount() + " " + viewPager.getCurrentItem()); getMenuInflater().inflate(R.menu.sort_menu, menu); break; case 2: Log.d(TAG, "onPrepareOptionsMenu " + viewPager.getChildCount() + " " + viewPager.getCurrentItem()); getMenuInflater().inflate(R.menu.favorite_menu, menu); break; } setMenu(menu); return super.onPrepareOptionsMenu(menu); } </code></pre> This is the searching_menu: <pre><code><menu xmlns:android="http://schemas.android.com/apk/res/android" > <item android:id="@+id/searchview" android:actionViewClass="com.haanz.K4Droid.ui.CustomSearchView" android:icon="@android:drawable/ic_search_category_default" android:orderInCategory="99" android:showAsAction="collapseActionView|ifRoom" android:title="@string/searching"/> <item android:id="@+id/search_by_spinner" android:actionViewClass="android.widget.Spinner" android:orderInCategory="100" android:showAsAction="always" android:title="spinner"/> <item android:id="@+id/info" android:icon="@android:drawable/ic_dialog_info" android:orderInCategory="98" android:showAsAction="collapseActionView" android:title="@string/searching"/> </menu> </code></pre> When I run project on device, it throws a Logcat likes this: <pre><code> 08-30 11:11:05.483: D/MainActivity(13881): onPrepareOptionsMenu 2 0 08-30 11:11:05.488: W/MenuInflater(13881): Cannot instantiate class: com.haanz.K4Droid.ui.CustomSearchView 08-30 11:11:05.488: W/MenuInflater(13881): java.lang.ClassNotFoundException: com.haanz.K4Droid.ui.CustomSearchView 08-30 11:11:05.488: W/MenuInflater(13881): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java) 08-30 11:11:05.488: W/MenuInflater(13881): at java.lang.ClassLoader.loadClass(ClassLoader.java) 08-30 11:11:05.488: W/MenuInflater(13881): at java.lang.ClassLoader.loadClass(ClassLoader.java) 08-30 11:11:05.488: W/MenuInflater(13881): at android.view.MenuInflater$MenuState.newInstance(MenuInflater.java) 08-30 11:11:05.488: W/MenuInflater(13881): at android.view.MenuInflater$MenuState.setItem(MenuInflater.java) 08-30 11:11:05.488: W/MenuInflater(13881): at android.view.MenuInflater$MenuState.addItem(MenuInflater.java) 08-30 11:11:05.488: W/MenuInflater(13881): at android.view.MenuInflater.parseMenu(MenuInflater.java) 08-30 11:11:05.488: W/MenuInflater(13881): at android.view.MenuInflater.inflate(MenuInflater.java) 08-30 11:11:05.488: W/MenuInflater(13881): at com.haanz.K4Droid.ui.MainActivity.onPrepareOptionsMenu(MainActivity.java:99) 08-30 11:11:05.488: W/MenuInflater(13881): at android.app.Activity.onPreparePanel(Activity.java) 08-30 11:11:05.488: W/MenuInflater(13881): at android.support.v4.app.FragmentActivity.onPreparePanel(FragmentActivity.java:469) 08-30 11:11:05.488: W/MenuInflater(13881): at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java) 08-30 11:11:05.488: W/MenuInflater(13881): at com.android.internal.policy.impl.PhoneWindow.invalidatePanelMenu(PhoneWindow.java) 08-30 11:11:05.488: W/MenuInflater(13881): at com.android.internal.policy.impl.PhoneWindow$1.run(PhoneWindow.java) 08-30 11:11:05.488: W/MenuInflater(13881): at android.os.Handler.handleCallback(Handler.java) 08-30 11:11:05.488: W/MenuInflater(13881): at android.os.Handler.dispatchMessage(Handler.java) 08-30 11:11:05.488: W/MenuInflater(13881): at android.os.Looper.loop(Looper.java) 08-30 11:11:05.488: W/MenuInflater(13881): at android.app.ActivityThread.main(ActivityThread.java) 08-30 11:11:05.488: W/MenuInflater(13881): at java.lang.reflect.Method.invokeNative(Native Method) 08-30 11:11:05.488: W/MenuInflater(13881): at java.lang.reflect.Method.invoke(Method.java) 08-30 11:11:05.488: W/MenuInflater(13881): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java) 08-30 11:11:05.488: W/MenuInflater(13881): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java) 08-30 11:11:05.488: W/MenuInflater(13881): at dalvik.system.NativeStart.main(Native Method) 08-30 11:11:05.498: W/dalvikvm(13881): threadid=1: thread exiting with uncaught exception (group=0x419f24d0) 08-30 11:11:05.498: E/AndroidRuntime(13881): FATAL EXCEPTION: main 08-30 11:11:05.498: E/AndroidRuntime(13881): java.lang.NullPointerException 08-30 11:11:05.498: E/AndroidRuntime(13881): at com.haanz.K4Droid.ui.MainActivity.onPrepareOptionsMenu(MainActivity.java:104) 08-30 11:11:05.498: E/AndroidRuntime(13881): at android.app.Activity.onPreparePanel(Activity.java) 08-30 11:11:05.498: E/AndroidRuntime(13881): at android.support.v4.app.FragmentActivity.onPreparePanel(FragmentActivity.java:469) 08-30 11:11:05.498: E/AndroidRuntime(13881): at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java) 08-30 11:11:05.498: E/AndroidRuntime(13881): at com.android.internal.policy.impl.PhoneWindow.invalidatePanelMenu(PhoneWindow.java) 08-30 11:11:05.498: E/AndroidRuntime(13881): at com.android.internal.policy.impl.PhoneWindow$1.run(PhoneWindow.java) 08-30 11:11:05.498: E/AndroidRuntime(13881): at android.os.Handler.handleCallback(Handler.java) 08-30 11:11:05.498: E/AndroidRuntime(13881): at android.os.Handler.dispatchMessage(Handler.java) 08-30 11:11:05.498: E/AndroidRuntime(13881): at android.os.Looper.loop(Looper.java) 08-30 11:11:05.498: E/AndroidRuntime(13881): at android.app.ActivityThread.main(ActivityThread.java) 08-30 11:11:05.498: E/AndroidRuntime(13881): at java.lang.reflect.Method.invokeNative(Native Method) 08-30 11:11:05.498: E/AndroidRuntime(13881): at java.lang.reflect.Method.invoke(Method.java) 08-30 11:11:05.498: E/AndroidRuntime(13881): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java) 08-30 11:11:05.498: E/AndroidRuntime(13881): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java) 08-30 11:11:05.498: E/AndroidRuntime(13881): at dalvik.system.NativeStart.main(Native Method) 08-30 11:11:05.518: D/Process(13881): killProcess, pid=13881 08-30 11:11:05.518: D/Process(13881): dalvik.system.VMStack.getThreadStackTrace(Native Method) 08-30 11:11:05.518: D/Process(13881): java.lang.Thread.getStackTrace(Thread.java) 08-30 11:11:05.518: D/Process(13881): android.os.Process.killProcess(Process.java) 08-30 11:11:05.518: D/Process(13881): com.android.internal.os.RuntimeInit$UncaughtHandler.uncaughtException(RuntimeInit.java) 08-30 11:11:05.518: D/Process(13881): java.lang.ThreadGroup.uncaughtException(ThreadGroup.java) 08-30 11:11:05.518: D/Process(13881): java.lang.ThreadGroup.uncaughtException(ThreadGroup.java) </code></pre> Can anybody tell me why this could happen? I can't find any stuff when it yells "Cannot instantiate class: com.Haanz.K4Droid.ui.CustomSearchView". Any help would be my appreciate. 
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<java><android><searchview>
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Issue with onPrepareOptionMenu and CustomSearchView (cannot instantiate class)
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