[android-developers] SearchView with autocomplete via volley

[Shekar Tippur]

Hello,

I am trying to implement a generic fragment that contains a SearchView with 
autocomplete data coming from a external api.
I am having trouble populating the list.

Appreciate any pointers.

Here is my menu:

<?xml version="1.0" encoding="utf-8"?>

<menu xmlns:android="http://schemas.android.com/apk/res/android";

    xmlns:app="http://schemas.android.com/apk/res-auto";>


    <item android:icon="@drawable/search"

        android:id="@+id/action_search"

        android:title="@string/title_search"

        app:showAsAction="ifRoom|withText"

        app:actionViewClass="android.support.v7.widget.SearchView" />

</menu>



<android.support.v7.widget.Toolbar android:id="@+id/my_toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:background="#2196F3"
    android:clickable="true"
    android:minHeight="?actionBarSize"
    android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
    xmlns:android="http://schemas.android.com/apk/res/android";
    xmlns:tools="http://schemas.android.com/tools";>

        <TextView
            android:id="@+id/toolbar_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center_vertical"
            android:text="@string/home"
            />
        <ListView
            android:id="@+id/list_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"/>

</android.support.v7.widget.Toolbar>


Fragment snippet:


@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    // Inflate the menu; this adds items to the action bar if it is present.

    SearchManager searchManager = (SearchManager) 
getActivity().getSystemService(Context.SEARCH_SERVICE);

    try {

        getActivity().getMenuInflater().inflate(R.menu.drawer_view, menu);

        mRefresh = menu.findItem(R.id.action_search);



        //mListView.setTextFilterEnabled(true);
        if (mRefresh != null) {

            searchView = (SearchView) mRefresh.getActionView();
        }


        if (searchView != null) {
            
searchView.setSearchableInfo(searchManager.getSearchableInfo(getActivity().getComponentName()));
            searchView.setIconified(false);
            searchView.setSuggestionsAdapter(adapter);
            searchView.setOnQueryTextListener(new 
SearchView.OnQueryTextListener() {
                @Override
                public boolean onQueryTextSubmit(String query) {
                    // Toast like print
                    Log.d("SearchViewSubmit", "In searchView listener" + query);
                    if (!searchView.isIconified()) {
                        searchView.setIconified(true);
                    }
                    mRefresh.collapseActionView();
                    return false;
                }


                @Override
                public boolean onQueryTextChange(String s) {

                    // Start volley search only of the first 3 characters are 
stored
                    if (s.length() >= 3) {
                        updateList(s);

                        return true;
                    }
                    mListView.clearTextFilter();
                    
                    return false;
                }

            });
        }
        //return true;
    }catch (Exception ex){
        ex.printStackTrace();
    }
   
}


// Volley request

public void updateList(String place) {
    String input = "";

    try {
        input = URLEncoder.encode(place, "utf-8");
    } catch (UnsupportedEncodingException e1) {
        e1.printStackTrace();
    }

    String output = "json";
    url = AppConfig.HOST + AppConfig.GET_ITEMS + input;


    JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.GET, 
url,
            null, new Response.Listener<JSONObject>() {

        @Override
        public void onResponse(JSONObject response) {
            try {
                JSONArray ja = response.getJSONArray(TAG_RESULT);

                String[] columnNames = {"item_name"};


                // Filter data

                // Trying out options. Trying to populate matrix cursor
                mc = new MatrixCursor(columnNames);

                String[] from = {"item_name"};
                int[] to = {android.R.id.text1};
                String[] tempStr = new String[1];

                for (int i = 0; i < ja.length(); i++) {

                    JSONObject c = ja.getJSONObject(i);
                    String description = c.getString("name");
                    String id = c.getString("id");
                    Log.d("ItemName", description);
                    Log.d("ItemID", id);

                    
                    tempStr[0]=description;
                    //tempStr[1]=description;
                    mc.addRow(tempStr);

                }


               // Not sure if this approach is better
                mListView.setAdapter(mAdapter = new ArrayAdapter<String>(cTxt, 
android.R.layout.simple_list_item_1, tempStr));
                mListView.setTextFilterEnabled(true);
                mListView.setFilterText(description.toString());

                // Or this
                //adapter = new 
SimpleCursorAdapter(cTxt,android.R.layout.simple_list_item_1,mc,from,to,CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);

                //searchView.setSuggestionsAdapter(adapter);
            } catch (Exception e) {
            }
        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
        }
    });

    // Submit to queue
    HttpRequestQueue.getInstance(cTxt).addToRequestQueue(jsonObjReq);
}

-- 
You received this message because you are subscribed to the Google Groups 
"Android Developers" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to android-developers+unsubscr...@googlegroups.com.
To post to this group, send email to android-developers@googlegroups.com.
Visit this group at https://groups.google.com/group/android-developers.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/android-developers/a120eed3-42ff-4888-84cc-f317838d2f0e%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.