问题
I am adding Search functionality to Action Bar in a SherlockListActivity however, when I try to instantiate SearchView its always null:
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getSupportMenuInflater().inflate(R.menu.activity_main_menu, menu);
SearchView searchView = (SearchView) menu.findItem(R.id.activity_main_menu_search).getActionView();
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener(){
public boolean onQueryTextSubmit(String p1){
List<Application> auxList = Search.search(mContext, p1);
AdapterApp aux = new AdapterApp(mContext, auxList);
setListAdapter(aux);
getListView().setOnItemClickListener(aux.getItemClickListener());
return true;
}
public boolean onQueryTextChange(String p1){
return false;
}
});
return super.onCreateOptionsMenu(menu);
}
activity_main_menu.xml:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/activity_main_menu_search"
android:title="@string/search"
android:icon="@android:drawable/ic_menu_search"
android:showAsAction="ifRoom|collapseActionView"
android:actionViewClass="com.actionbarsherlock.widget.SearchView " />
<item android:id="@+id/activity_main_menu_purchase"
android:title="@string/purchase"
android:icon="@drawable/ic_launcher_market_holo"
android:showAsAction="ifRoom|collapseActionView" />
</menu>
Also I have to say that I have correctly imported required classes:
import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.ActionBar.OnNavigationListener;
import com.actionbarsherlock.app.SherlockListActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.actionbarsherlock.view.MenuItem.OnActionExpandListener;
import com.actionbarsherlock.widget.SearchView;
And this is stack trace. When SearchView is instantiated, log returns this:
06-03 19:42:43.128: W/dalvikvm(15936): dvmFindClassByName rejecting 'com.actionbarsherlock.widget.SearchView '
06-03 19:42:43.138: W/MenuInflater(15936): Cannot instantiate class: com.actionbarsherlock.widget.SearchView
06-03 19:42:43.138: W/MenuInflater(15936): java.lang.ClassNotFoundException: Didn't find class "com.actionbarsherlock.widget.SearchView " on path: /data/app/com.iamaner.oneclickfreeze-1.apk
06-03 19:42:43.138: W/MenuInflater(15936): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
06-03 19:42:43.138: W/MenuInflater(15936): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
06-03 19:42:43.138: W/MenuInflater(15936): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
06-03 19:42:43.138: W/MenuInflater(15936): at com.actionbarsherlock.view.MenuInflater$MenuState.newInstance(MenuInflater.java:486)
06-03 19:42:43.138: W/MenuInflater(15936): at com.actionbarsherlock.view.MenuInflater$MenuState.setItem(MenuInflater.java:447)
06-03 19:42:43.138: W/MenuInflater(15936): at com.actionbarsherlock.view.MenuInflater$MenuState.addItem(MenuInflater.java:468)
06-03 19:42:43.138: W/MenuInflater(15936): at com.actionbarsherlock.view.MenuInflater.parseMenu(MenuInflater.java:190)
06-03 19:42:43.138: W/MenuInflater(15936): at com.actionbarsherlock.view.MenuInflater.inflate(MenuInflater.java:112)
06-03 19:42:43.138: W/MenuInflater(15936): at com.iamaner.oneclickfreeze.ActivityMain.onCreateOptionsMenu(ActivityMain.java:131)
06-03 19:42:43.138: W/MenuInflater(15936): at com.actionbarsherlock.app.SherlockListActivity.onCreatePanelMenu(SherlockListActivity.java:184)
06-03 19:42:43.138: W/MenuInflater(15936): at com.actionbarsherlock.ActionBarSherlock.callbackCreateOptionsMenu(ActionBarSherlock.java:559)
06-03 19:42:43.138: W/MenuInflater(15936): at com.actionbarsherlock.internal.ActionBarSherlockNative.dispatchCreateOptionsMenu(ActionBarSherlockNative.java:65)
06-03 19:42:43.138: W/MenuInflater(15936): at com.actionbarsherlock.app.SherlockListActivity.onCreateOptionsMenu(SherlockListActivity.java:149)
06-03 19:42:43.138: W/MenuInflater(15936): at android.app.Activity.onCreatePanelMenu(Activity.java:2490)
06-03 19:42:43.138: W/MenuInflater(15936): at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java:458)
06-03 19:42:43.138: W/MenuInflater(15936): at com.android.internal.policy.impl.PhoneWindow.doInvalidatePanelMenu(PhoneWindow.java:820)
06-03 19:42:43.138: W/MenuInflater(15936): at com.android.internal.policy.impl.PhoneWindow$1.run(PhoneWindow.java:248)
06-03 19:42:43.138: W/MenuInflater(15936): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
06-03 19:42:43.138: W/MenuInflater(15936): at android.view.Choreographer.doCallbacks(Choreographer.java:562)
06-03 19:42:43.138: W/MenuInflater(15936): at android.view.Choreographer.doFrame(Choreographer.java:531)
06-03 19:42:43.138: W/MenuInflater(15936): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
06-03 19:42:43.138: W/MenuInflater(15936): at android.os.Handler.handleCallback(Handler.java:725)
06-03 19:42:43.138: W/MenuInflater(15936): at android.os.Handler.dispatchMessage(Handler.java:92)
06-03 19:42:43.138: W/MenuInflater(15936): at android.os.Looper.loop(Looper.java:137)
06-03 19:42:43.138: W/MenuInflater(15936): at android.app.ActivityThread.main(ActivityThread.java:5231)
06-03 19:42:43.138: W/MenuInflater(15936): at java.lang.reflect.Method.invokeNative(Native Method)
06-03 19:42:43.138: W/MenuInflater(15936): at java.lang.reflect.Method.invoke(Method.java:511)
06-03 19:42:43.138: W/MenuInflater(15936): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
Then, SearchView is null, so I get a NullPointerException when calling SearchView.setOnQueryTextListener();
06-03 19:42:43.148: E/AndroidRuntime(15936): FATAL EXCEPTION: main
06-03 19:42:43.148: E/AndroidRuntime(15936): java.lang.NullPointerException
06-03 19:42:43.148: E/AndroidRuntime(15936): at com.iamaner.oneclickfreeze.ActivityMain.onCreateOptionsMenu(ActivityMain.java:133)
06-03 19:42:43.148: E/AndroidRuntime(15936): at com.actionbarsherlock.app.SherlockListActivity.onCreatePanelMenu(SherlockListActivity.java:184)
06-03 19:42:43.148: E/AndroidRuntime(15936): at com.actionbarsherlock.ActionBarSherlock.callbackCreateOptionsMenu(ActionBarSherlock.java:559)
06-03 19:42:43.148: E/AndroidRuntime(15936): at com.actionbarsherlock.internal.ActionBarSherlockNative.dispatchCreateOptionsMenu(ActionBarSherlockNative.java:65)
06-03 19:42:43.148: E/AndroidRuntime(15936): at com.actionbarsherlock.app.SherlockListActivity.onCreateOptionsMenu(SherlockListActivity.java:149)
06-03 19:42:43.148: E/AndroidRuntime(15936): at android.app.Activity.onCreatePanelMenu(Activity.java:2490)
06-03 19:42:43.148: E/AndroidRuntime(15936): at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java:458)
06-03 19:42:43.148: E/AndroidRuntime(15936): at com.android.internal.policy.impl.PhoneWindow.doInvalidatePanelMenu(PhoneWindow.java:820)
06-03 19:42:43.148: E/AndroidRuntime(15936): at com.android.internal.policy.impl.PhoneWindow$1.run(PhoneWindow.java:248)
06-03 19:42:43.148: E/AndroidRuntime(15936): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
06-03 19:42:43.148: E/AndroidRuntime(15936): at android.view.Choreographer.doCallbacks(Choreographer.java:562)
06-03 19:42:43.148: E/AndroidRuntime(15936): at android.view.Choreographer.doFrame(Choreographer.java:531)
06-03 19:42:43.148: E/AndroidRuntime(15936): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
06-03 19:42:43.148: E/AndroidRuntime(15936): at android.os.Handler.handleCallback(Handler.java:725)
06-03 19:42:43.148: E/AndroidRuntime(15936): at android.os.Handler.dispatchMessage(Handler.java:92)
06-03 19:42:43.148: E/AndroidRuntime(15936): at android.os.Looper.loop(Looper.java:137)
06-03 19:42:43.148: E/AndroidRuntime(15936): at android.app.ActivityThread.main(ActivityThread.java:5231)
06-03 19:42:43.148: E/AndroidRuntime(15936): at java.lang.reflect.Method.invokeNative(Native Method)
06-03 19:42:43.148: E/AndroidRuntime(15936): at java.lang.reflect.Method.invoke(Method.java:511)
06-03 19:42:43.148: E/AndroidRuntime(15936): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
I have wasted all a day searching the cause of the error, but no success... Please I need help
回答1:
Well, the error itself is caused by ActionBarSherlock library, you can find the issue in GitHub here: https://github.com/JakeWharton/ActionBarSherlock/issues/685
And the comment posted here was my solution: https://github.com/JakeWharton/ActionBarSherlock/issues/685#issuecomment-11670533
Go to res/values-v14/abs_themes.xml of ABS library project: then you should edit first two themes like this:
<style name="Sherlock.__Theme" parent="android:Theme.Holo">
<item name="textColorPrimary">@color/abs__primary_text_holo_light</item>
<item name="textColorPrimaryInverse">@color/abs__primary_text_holo_dark</item>
</style>
<style name="Sherlock.__Theme.Light" parent="android:Theme.Holo.Light">
<item name="textColorPrimary">@color/abs__primary_text_holo_light</item>
<item name="textColorPrimaryInverse">@color/abs__primary_text_holo_dark</item>
</style>
Also dont forget to declare in your manifest for those activities which use it:
android:theme="@style/Theme.Sherlock.Light"
回答2:
I'm not really familiar with the usage of the ActionBarSherlock SearchView class, but I can tell you is that if you look at the samples, he doesn't try to get the SearchView from the menu, but rather he creates the SearchView and sets it to the menu.
@Override
public boolean onCreateOptionsMenu(Menu menu) {
//Used to put dark icons on light action bar
boolean isLight = SampleList.THEME == R.style.Theme_Sherlock_Light;
//Create the search view
SearchView searchView = new SearchView(getSupportActionBar().getThemedContext());
searchView.setQueryHint("Search for countries…");
searchView.setOnQueryTextListener(this);
searchView.setOnSuggestionListener(this);
if (mSuggestionsAdapter == null) {
MatrixCursor cursor = new MatrixCursor(COLUMNS);
cursor.addRow(new String[]{"1", "'Murica"});
cursor.addRow(new String[]{"2", "Canada"});
cursor.addRow(new String[]{"3", "Denmark"});
mSuggestionsAdapter = new SuggestionsAdapter(getSupportActionBar().getThemedContext(), cursor);
}
searchView.setSuggestionsAdapter(mSuggestionsAdapter);
menu.add("Search")
.setIcon(isLight ? R.drawable.ic_search_inverse : R.drawable.abs__ic_search)
.setActionView(searchView)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM | MenuItem.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW);
return true;
}
回答3:
This comment on the above mentioned github issue solved it form me. (Strange fix, as you just remove Theme's base.)
来源：https://stackoverflow.com/questions/16902883/actionbarsherlock-searchview-is-null