Action bar with search function. Backward Compatibility Issues

Question

I am creating an example application to demonstrate SearchView with a filter and other Action Bar elements. I can successfully run this application on 4.2 (Nexus 7). But it does not work on 2.3. I was looking for this problem. Came to know that I should use the Sherlock action bar. I just went to http://actionbarsherlock.com/download.html , downloaded the zip file and added the library according to the information in the video: http://www.youtube.com/watch?v=4GJ6yY1lNNY&feature=player_played_ from WiseManDesigns. But still I can not understand the problem.

Here is my code:

SearchViewActionBar.java

public class SearchViewActionBar extends Activity implements SearchView.OnQueryTextListener { private SearchView mSearchView; private TextView mStatusView; int mSortMode = -1; private ListView mListView; private ArrayAdapter<String> mAdapter; protected CharSequence[] _options = { "Wild Life", "River", "Hill Station", "Temple", "Bird Sanctuary", "Hill", "Amusement Park"}; protected boolean[] _selections = new boolean[ _options.length ]; private final String[] mStrings = Cheeses.sCheeseStrings; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getWindow().requestFeature(Window.FEATURE_ACTION_BAR); setContentView(R.layout.activity_main); // mStatusView = (TextView) findViewById(R.id.status_text); // mSearchView = (SearchView) findViewById(R.id.search_view); mListView = (ListView) findViewById(R.id.list_view); mListView.setAdapter(mAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mStrings)); mListView.setTextFilterEnabled(true); //setupSearchView(); } private void setupSearchView() { mSearchView.setIconifiedByDefault(true); mSearchView.setOnQueryTextListener(this); mSearchView.setSubmitButtonEnabled(false); //mSearchView.setQueryHint(getString(R.string.cheese_hunt_hint)); } @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.searchview_in_menu, menu); MenuItem searchItem = menu.findItem(R.id.action_search); mSearchView = (SearchView) searchItem.getActionView(); //setupSearchView(searchItem); setupSearchView(); return true; } @Override public boolean onPrepareOptionsMenu(Menu menu) { if (mSortMode != -1) { Drawable icon = menu.findItem(mSortMode).getIcon(); menu.findItem(R.id.action_sort).setIcon(icon); } return super.onPrepareOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { String c="Category"; String s=(String) item.getTitle(); if(s.equals(c)) { System.out.println("same"); showDialog( 0 ); } //System.out.println(s); Toast.makeText(this, "Selected Item: " + item.getTitle(), Toast.LENGTH_SHORT).show(); return true; } protected Dialog onCreateDialog( int id ) { return new AlertDialog.Builder( this ) .setTitle( "Category" ) .setMultiChoiceItems( _options, _selections, new DialogSelectionClickHandler() ) .setPositiveButton( "SAVE", new DialogButtonClickHandler() ) .create(); } public class DialogSelectionClickHandler implements DialogInterface.OnMultiChoiceClickListener { public void onClick( DialogInterface dialog, int clicked, boolean selected ) { Log.i( "ME", _options[ clicked ] + " selected: " + selected ); } } public class DialogButtonClickHandler implements DialogInterface.OnClickListener { public void onClick( DialogInterface dialog, int clicked ) { switch( clicked ) { case DialogInterface.BUTTON_POSITIVE: printSelectedPlanets(); break; } } } protected void printSelectedPlanets() { for( int i = 0; i < _options.length; i++ ){ Log.i( "ME", _options[ i ] + " selected: " + _selections[i] ); } } public void onSort(MenuItem item) { mSortMode = item.getItemId(); invalidateOptionsMenu(); } public boolean onQueryTextChange(String newText) { if (TextUtils.isEmpty(newText)) { mListView.clearTextFilter(); } else { mListView.setFilterText(newText.toString()); } return true; } public boolean onQueryTextSubmit(String query) { mStatusView.setText("Query = " + query + " : submitted"); return false; } public boolean onClose() { mStatusView.setText("Closed!"); return false; } protected boolean isAlwaysExpanded() { return false; } } 

Answer 1

You need to use ActionBarSherlock. To do this, you need to expand your activities and the ActionBarSherlock component. Something else like this:

MySearchActivity extends SherlockActivity {}

or if you want to use the assembly API in the list of APIs, you can simply do this:

MySearchActivity extends SherlockListActivity {}

then in the res / menu folder create an activity_mysearch.xml file with something like this:

 <menu xmlns:android="http://schemas.android.com/apk/res/android" > <item android:id="@+id/menu_search" android:icon="@drawable/ic_menu_search" android:title="@string/menu_search" android:showAsAction="ifRoom|collapseActionView" android:actionViewClass="com.actionbarsherlock.widget.SearchView" </menu> 

Now your activity implements OnQueryTextListener. In onCreateOptionsMenu, do:

 inflater.inflate(R.menu.activity_mysearch, menu); MenuItem searchViewMenuItem = menu.findItem(R.id.menu_search); SearchView searchView = (SearchView) searchViewMenuItem.getActionView(); searchView.setOnQueryTextListener(this); 

Now you can use

 onQueryTextSubmit(String query) onQueryTextChange(String newText) 

to request your list and update the list item. You can also add a filter to the adapter and create an interface that notifies the action of canceling list views after changing the adapter dataset.