Android Actionbar Search widget implementation In ListFragment
Yes, as a matter of fact, that is the "normal" use case. What you have to remember is that the fragment that uses the search action bar widget, should be the part that registers it in general, since the widget will get destroyed along with that fragment.
Here's how to properly tie it up:
in your ListFragment
let it be known that you have option menu items...
@Override
public void onActivityCreated(Bundle savedInstanceState) {
..
setHasOptionsMenu(true);
..
}
then inside the same ListFragment
create your options menu by overriding the callback, once you have the SearchView widget reference, register a QueryTextListener callback:
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.grid_default, menu);
SearchView searchView = (SearchView)menu.findItem(R.id.grid_default_search).getActionView();
searchView.setOnQueryTextListener(queryListener);
}
create your search widget via either programmatically (Java) or declaratively (XML) here is XML (named grid_default.xml, from above):
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/grid_default_search"
android:icon="@android:drawable/ic_menu_search"
android:title="search"
android:showAsAction="always"
android:actionViewClass="android.widget.SearchView"
/>
<!-- other items or whatever -->
</menu>
now back in your ListFragment
you need to create the queryListener
we registered above:
private String grid_currentQuery = null; // holds the current query...
final private OnQueryTextListener queryListener = new OnQueryTextListener() {
@Override
public boolean onQueryTextChange(String newText) {
if (TextUtils.isEmpty(newText)) {
getActivity().getActionBar().setSubtitle("List");
grid_currentQuery = null;
} else {
getActivity().getActionBar().setSubtitle("List - Searching for: " + newText);
grid_currentQuery = newText;
}
getLoaderManager().restartLoader(0, null, MyListFragment.this);
return false;
}
@Override
public boolean onQueryTextSubmit(String query) {
Toast.makeText(getActivity(), "Searching for: " + query + "...", Toast.LENGTH_SHORT).show();
return false;
}
};
now you know when a query is changed or submitted, in my example, I re-query anytime a key is pressed because my database was small and fast with results, you might need to change this.. but you'll notice how I am just using the widget to set a private class field inside the ListFragment
to the current text of the search widget (grid_currentQuery
) and then I am just calling getLoaderManager().restartLoader(0, null, MyListFragment.this);
where inside my onCreateLoader
I am just updating the query I used like this:
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle bargs) {
String sort = "SortColumn ASC";
String[] grid_columns = new String[] { "ColumnA", "ColumnB", "Etc..." };
String grid_whereClause = "ColumnToSearchBy LIKE ?"
if (!TextUtils.isEmpty(grid_currentQuery)) {
return new CursorLoader(getActivity(), DataProvider.CONTENT_URI, grid_columns, grid_whereClause, new String[] { grid_currentQuery + "%" }, sort);
}
return new CursorLoader(getActivity(), DataProvider.CONTENT_URI, grid_columns, null, null, sort);
}
and that's all you really need to do, I realize this is kind of chopped up but it's like this because there is more stuff that needs to happen, setting the adapter, starting the loader in the first place using getLoaderManager().initLoader(0, null, this);
and all the rest of the loader callbacks that need to be handled... but if you are following the best practices set forward by the android folks, (using LoaderManager
s in your ListActivity
s and ListFragments
s it should be pretty easy for you...
I hope this helps feel free to ask for clarification in the comments if you need to -ck
bencallis
iOS Developer living in Glasgow. Studied Mobile Software Engineering at Glasgow University.
Updated on July 09, 2022Comments
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bencallis almost 2 years
I currently have my application set up with a
ListFragment
on the left and aDetailsFragment
on the right (similar to the layout on the tablet below).On the action bar I have a search widget which when a search term is submitted should update the contents of the list (in the ListFragment). I have been following the search guide on android dev (http://developer.android.com/guide/topics/search/search-dialog.html) but I am having problems getting the search to update the list in the same activity.
I have managed to get some form of implementation working by calling a new activity when the search term is submitted but this makes the back button behave oddly (i.e. you press back and you go to the previous activity with the search widget still displaying the search term).
I have added the intent lines to the manifest as follows
<intent-filter> <action android:name="android.intent.action.SEARCH" /> </intent-filter> <meta-data android:name="android.app.searchable" android:resource="@xml/searchable"/>
Is it possible to get the search widget to update the list of the current activity?
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bencallis about 12 yearsThank you very much for the detailed explanation. I will try to implement it in the next few days and let you know if I have any problems.
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bencallis about 12 yearsThanks I have managed to get it working very informative answer. One thing I was wondering. By default in the application I have 3 tabs each representing a category when search I would like to remove these tabs. That is not a problem, the problem I am having is how do I know when the user has finished searching (gone back) to re add the tabs.
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ckozl about 12 years@bencallis you'd most like want to use setOnCloseListener(SearchView.OnCloseListener listener) on the SearchView...
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bencallis about 12 yearsI was just on with that but I am having issues. searchView.setOnCloseListener(new OnCloseListener() { @Override public boolean onClose() { Toast.makeText(DealPadActivity.this, "Closed", Toast.LENGTH_SHORT).show(); Log.d("Search", "search closed"); It doesn't seem to get called.
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ckozl about 12 yearsit only gets called with the "x" is clicked to "close" the search, this works fine for me: searchView.setOnCloseListener(new OnCloseListener() { @Override public boolean onClose() { /* this works perfect your problem is elsewhere*/ return false; } });
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ckozl about 12 yearsyou might want to try an "ActionMode" as it has a clearer sense of being "finished" or "closed"...
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bencallis about 12 yearsstackoverflow.com/questions/9327826/… seems there is a bug in ICS. How would ActionMode work?
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bencallis about 12 yearsIt seems onCloseListener is working on my tablet running ICS but not on my phone :(
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Deses almost 11 yearsUhm, my only issue is that I don't know what to put on DataProvider.CONTENT_URI. I'm using a prepopulated sqlite database that I copy to the user folder, so I don't have a class for each table. What should I do?
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Ashish Dwivedi almost 10 yearsgetLoaderManager().restartLoader(0, null, MyListFragment.this); this line give me error, I need to search in a ArrayList<String>, Is it any way to set an adapter to show suggestion on text change
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Sndn about 9 years@ckozl My action bar Search View inflated from fragment shows the soft keyboard on touch but the cursor doesn't appear and the text I type doesn't appear on the search box. Why is that?