Turn AutoCompleteTextView into a SearchView in ActionBar instead

Question

I have a AutoCompleteTextView which gives user auto-completion search result from Google Places API. Once I was done I discovered SearchView and how it can be placed in the ActionBar. I checked out the SearchView example provided by google and added it to my application as a starting point (it lists the installed applications) but I don´t know how to proceed from here. I want to have the same functionality as AutoCompleteTextView but use the SearchView instead. Any suggestion? The whole class is provided below.

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.URL; import java.net.URLConnection; import java.net.URLEncoder; import java.util.ArrayList; import java.util.List;  import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject;  import android.app.Activity; import android.app.SearchManager; import android.app.SearchableInfo; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.SharedPreferences.OnSharedPreferenceChangeListener; import android.os.AsyncTask; import android.os.Bundle; import android.os.Handler; import android.preference.PreferenceManager; import android.text.Editable; import android.text.TextWatcher; import android.util.Log; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.Window; import android.view.animation.Animation; import android.view.animation.AnimationUtils; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.AutoCompleteTextView; import android.widget.ImageView; import android.widget.ListView; import android.widget.SearchView; import android.widget.TextView; import android.widget.Toast;    /**  *   * @author   *  */ public class PlacesListSearchActivity extends Activity implements SearchView.OnQueryTextListener{      private static final String TAG = "PlacesListActivity";      private ResultReceiver mReceiver;      private OnSharedPreferenceChangeListener sharedPreferencesListener;     private SharedPreferences sharedPreferences;      /** Called when the activity is first created. */     public ArrayAdapter<String> adapter;     public AutoCompleteTextView textView;      private SearchView mSearchView;     private TextView mStatusView;      @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         getWindow().requestFeature(Window.FEATURE_ACTION_BAR);         setContentView(R.layout.places_search);         mStatusView = (TextView) findViewById(R.id.status_text);           final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,R.layout.item_list);         textView = (AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1);         adapter.setNotifyOnChange(true);         textView.setHint("type store name");         textView.setAdapter(adapter);         textView.addTextChangedListener(new TextWatcher() {          public void onTextChanged(CharSequence s, int start, int before, int count) {             if (count%3 == 1) {                 adapter.clear();                     GetPlaces task = new GetPlaces();                     //now pass the argument in the textview to the task                     task.execute(textView.getText().toString());             }         }          public void beforeTextChanged(CharSequence s, int start, int count,         int after) {         // TODO Auto-generated method stub          }          public void afterTextChanged(Editable s) {          }          });     }       @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);          return true;     }      private void setupSearchView(MenuItem searchItem) {          if (isAlwaysExpanded()) {             mSearchView.setIconifiedByDefault(false);         } else {             searchItem.setShowAsActionFlags(MenuItem.SHOW_AS_ACTION_IF_ROOM                     | MenuItem.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW);         }          SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);         if (searchManager != null) {             List<SearchableInfo> searchables = searchManager.getSearchablesInGlobalSearch();              // Try to use the "applications" global search provider             SearchableInfo info = searchManager.getSearchableInfo(getComponentName());             for (SearchableInfo inf : searchables) {                 if (inf.getSuggestAuthority() != null                         && inf.getSuggestAuthority().startsWith("applications")) {                     info = inf;                 }             }             mSearchView.setSearchableInfo(info);         }          mSearchView.setOnQueryTextListener(this);     }      public boolean onQueryTextChange(String newText) {         mStatusView.setText("Query = " + newText);         return false;     }      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;     }      class GetPlaces extends AsyncTask<String, Void, ArrayList<String>> {         @Override         // three dots is java for an array of strings         protected ArrayList<String> doInBackground(String... args)         {             Log.d("PlacesListActivity", "doInBackground");             ArrayList<String> predictionsArr = new ArrayList<String>();             try             {                 URL googlePlaces = new URL(                         "https://maps.googleapis.com/maps/api/place/autocomplete/json?input=" +                         URLEncoder.encode(args[0], "UTF-8") + //                      "&types=geocode&language=en&sensor=true&key=" + SEARCHES FOR GEO CODES                         "&types=establishment&language=en&sensor=true&key=" +                         getResources().getString(R.string.googleAPIKey));                  Log.d("PlacesListActivity", googlePlaces.toString());                  URLConnection tc = googlePlaces.openConnection();                 BufferedReader in = new BufferedReader(new InputStreamReader(                         tc.getInputStream()));                  String line;                 StringBuffer sb = new StringBuffer();                 //take Google's legible JSON and turn it into one big string.                 while ((line = in.readLine()) != null) {                     sb.append(line);                 }                 //turn that string into a JSON object                 JSONObject predictions = new JSONObject(sb.toString());                  //now get the JSON array that's inside that object                             JSONArray ja = new JSONArray(predictions.getString("predictions"));                  for (int i = 0; i < ja.length(); i++) {                     JSONObject jo = (JSONObject) ja.get(i);                     //add each entry to our array                     predictionsArr.add(jo.getString("description"));                 }             } catch (IOException e)             {             Log.e("PlacesListActivity", "GetPlaces : doInBackground", e);             } catch (JSONException e)             {             Log.e("PlacesListActivity", "GetPlaces : doInBackground", e);             }              return predictionsArr;         }          @Override         protected void onPostExecute(ArrayList<String> result){             Log.d("PlacesListActivity", "onPostExecute : " + result.size());             //update the adapter             adapter = new ArrayAdapter<String>(getBaseContext(), R.layout.item_list);             adapter.setNotifyOnChange(true);             //attach the adapter to textview             textView.setAdapter(adapter);              for (String string : result) {                 Log.d("PlacesListActivity", "onPostExecute : result = " + string);                 adapter.add(string);                 adapter.notifyDataSetChanged();             }              Log.d("PlacesListActivity", "onPostExecute : autoCompleteAdapter" + adapter.getCount());         }      }  } 

After updating the code suggested by saxman, I can see that the query method in the provider is never called:

My manifest file looks like this:

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.rathinavelu.rea"     android:versionCode="1"     android:versionName="1.0" >      <uses-sdk         android:minSdkVersion="7"         android:targetSdkVersion="15" />      <uses-permission android:name="android.permission.INTERNET" />     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />      <application         android:icon="@drawable/ic_launcher"         android:label="@string/app_name" >          <activity             android:name=".MainActivity"             android:label="@string/app_name"             android:screenOrientation="portrait" >             <intent-filter>                 <action android:name="android.intent.action.MAIN" />                 <category android:name="android.intent.category.LAUNCHER" />             </intent-filter>         </activity>          <activity android:name=".PlacesListActivity" >         </activity>          <activity android:name=".PlacesListSearchActivity" >             <action android:name="android.intent.action.SEARCH" />             <meta-data                 android:name="android.app.searchable"                 android:resource="@xml/searchable" />         </activity>          <activity android:name=".TestMapActivity" >         </activity>          <activity android:name=".SettingsPreferencesActivity" >         </activity>          <activity android:name="com.rathinavelu.util.ConnectionChecker" >         </activity>          <uses-library android:name="com.google.android.maps" />          <service             android:name=".places.PlacesRESTService"             android:enabled="true"             android:exported="false" >             <intent-filter>                 <action android:name="android.intent.action.ACTION_SYNC" />             </intent-filter>         </service>          <provider             android:name=".places.PlacesSuggestionProvider"             android:authorities="com.rathinavelu.rea.places.search_suggestion_provider"             android:syncable="false" />      </application>  </manifest> 

I use the same authority in the manifest, content provider and manifest file. I see the searchView in the menu and I have not modified the query method so It should just return the one line cursor. but the query method is never called. please help. Another issue I just spotted is that the searchView does not show the specified search_hint!

Providing more code *PlacesListSearchActivity.java*

public class PlacesListSearchActivity extends Activity {          private static final String TAG = "PlacesListSearchActivity";          private ResultReceiver mReceiver;          private OnSharedPreferenceChangeListener sharedPreferencesListener;         private SharedPreferences sharedPreferences;      /** Called when the activity is first created. */         public ArrayAdapter<String> adapter;         public AutoCompleteTextView textView;          private SearchView mSearchView;         private TextView mStatusView;          @Override     public void onCreate(Bundle savedInstanceState) {                 super.onCreate(savedInstanceState);                 getWindow().requestFeature(Window.FEATURE_ACTION_BAR);                 setContentView(R.layout.places_search);                 mStatusView = (TextView) findViewById(R.id.status_text);                   final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,R.layout.item_list);                 textView = (AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1);                 adapter.setNotifyOnChange(true);                 textView.setHint("type store name");                 textView.setAdapter(adapter);                 textView.addTextChangedListener(new TextWatcher() {                  public void onTextChanged(CharSequence s, int start, int before, int count) {                         if (count%3 == 1) {                                 adapter.clear();                                         GetPlaces task = new GetPlaces();                                         //now pass the argument in the textview to the task                                         task.execute(textView.getText().toString());                         }                 }                  public void beforeTextChanged(CharSequence s, int start, int count,                 int after) {                 // TODO Auto-generated method stub                  }                  public void afterTextChanged(Editable s) {                  }                  });         }       @Override     public boolean onCreateOptionsMenu(Menu menu) { //        super.onCreateOptionsMenu(menu);         // Inflate the options menu from XML         MenuInflater inflater = getMenuInflater();         inflater.inflate(R.menu.places_list_search_options_menu, menu);          SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);         SearchView searchView = (SearchView) menu.findItem(R.id.menu_search).getActionView();         // Tells your app's SearchView to use this activity's searchable configuration         searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));         searchView.setIconifiedByDefault(false); // Do not iconify the widget; expand it by default  //        setupSearchView(searchItem);          return true;     } 

places_search.xml

<?xml version="1.0" encoding="utf-8"?>  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"         android:layout_width="fill_parent"         android:layout_height="fill_parent"         android:background="#dddddd">  <AutoCompleteTextView android:id="@+id/autoCompleteTextView1"     android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:layout_marginTop="10dp" >         <requestFocus></requestFocus>         </AutoCompleteTextView>      <TextView             android:id="@+id/status_text"             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:gravity="center_horizontal"/> </RelativeLayout> 

places_list_search_options_menu.xml

<?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http://schemas.android.com/apk/res/android" >     <item android:id="@+id/menu_search"           android:title="@string/menu_search"           android:icon="@android:drawable/ic_menu_search"           android:showAsAction="collapseActionView|ifRoom"           android:actionViewClass="android.widget.SearchView" /> </menu> 

searchable.xml

<?xml version="1.0" encoding="utf-8"?> <searchable xmlns:android="http://schemas.android.com/apk/res/android"     android:label="@string/app_name"     android:hint="@string/search_hint"     android:searchSuggestAuthority="com.rathinavelu.rea.places.search_suggestion_provider"> </searchable> 

PlacesSuggestionProvider.java

public class PlacesSuggestionProvider extends ContentProvider {     private static final String LOG_TAG = "PlacesSuggestionProvider";      public static final String AUTHORITY = "com.rathinavelu.rea.places.search_suggestion_provider";     public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/search");      // UriMatcher constant for search suggestions     private static final int SEARCH_SUGGEST = 1;      private static final UriMatcher uriMatcher;      private static final String[] SEARCH_SUGGEST_COLUMNS = {             BaseColumns._ID,             SearchManager.SUGGEST_COLUMN_TEXT_1,             SearchManager.SUGGEST_COLUMN_TEXT_2,             SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID     };      static {         uriMatcher = new UriMatcher(UriMatcher.NO_MATCH);         uriMatcher.addURI(AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY, SEARCH_SUGGEST);         uriMatcher.addURI(AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY + "/*", SEARCH_SUGGEST);     }      @Override     public int delete(Uri uri, String arg1, String[] arg2) {         throw new UnsupportedOperationException();     }      @Override     public String getType(Uri uri) {         switch (uriMatcher.match(uri)) {             case SEARCH_SUGGEST:                 return SearchManager.SUGGEST_MIME_TYPE;             default:                 throw new IllegalArgumentException("Unknown URL " + uri);         }     }      @Override     public Uri insert(Uri uri, ContentValues arg1) {         throw new UnsupportedOperationException();     }      @Override     public boolean onCreate() {         return true;     }      @Override     public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,             String sortOrder) {         Log.d(LOG_TAG, "query = " + uri);          // Use the UriMatcher to see what kind of query we have         switch (uriMatcher.match(uri)) {             case SEARCH_SUGGEST:                 Log.d(LOG_TAG, "Search suggestions requested.");                 MatrixCursor cursor = new MatrixCursor(SEARCH_SUGGEST_COLUMNS, 1);                 cursor.addRow(new String[] {                         "1", "Search Result", "Search Result Description", "content_id"                 });                 return cursor;             default:                 throw new IllegalArgumentException("Unknown Uri: " + uri);         }     }      @Override     public int update(Uri uri, ContentValues arg1, String arg2, String[] arg3) {         throw new UnsupportedOperationException();     } } 

Answer 1

To get Places Autocomplete API results in a SearchView, you'll first need a ContentProvider for the API.

import android.app.SearchManager; import android.content.ContentProvider; import android.content.ContentValues; import android.content.UriMatcher; import android.database.Cursor; import android.database.MatrixCursor; import android.net.Uri; import android.provider.BaseColumns; import android.util.Log;  public class PlacesSuggestionProvider extends ContentProvider {     private static final String LOG_TAG = "ExampleApp";      public static final String AUTHORITY = "com.example.google.places.search_suggestion_provider";     public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/search");      // UriMatcher constant for search suggestions     private static final int SEARCH_SUGGEST = 1;      private static final UriMatcher uriMatcher;      private static final String[] SEARCH_SUGGEST_COLUMNS = {             BaseColumns._ID,             SearchManager.SUGGEST_COLUMN_TEXT_1,             SearchManager.SUGGEST_COLUMN_TEXT_2,             SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID     };      static {         uriMatcher = new UriMatcher(UriMatcher.NO_MATCH);         uriMatcher.addURI(AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY, SEARCH_SUGGEST);         uriMatcher.addURI(AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY + "/*", SEARCH_SUGGEST);     }      @Override     public int delete(Uri uri, String arg1, String[] arg2) {         throw new UnsupportedOperationException();     }      @Override     public String getType(Uri uri) {         switch (uriMatcher.match(uri)) {             case SEARCH_SUGGEST:                 return SearchManager.SUGGEST_MIME_TYPE;             default:                 throw new IllegalArgumentException("Unknown URL " + uri);         }     }      @Override     public Uri insert(Uri uri, ContentValues arg1) {         throw new UnsupportedOperationException();     }      @Override     public boolean onCreate() {         return true;     }      @Override     public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,             String sortOrder) {         Log.d(LOG_TAG, "query = " + uri);          // Use the UriMatcher to see what kind of query we have         switch (uriMatcher.match(uri)) {             case SEARCH_SUGGEST:                 Log.d(LOG_TAG, "Search suggestions requested.");                 MatrixCursor cursor = new MatrixCursor(SEARCH_SUGGEST_COLUMNS, 1);                 cursor.addRow(new String[] {                         "1", "Search Result", "Search Result Description", "content_id"                 });                 return cursor;             default:                 throw new IllegalArgumentException("Unknown Uri: " + uri);         }     }      @Override     public int update(Uri uri, ContentValues arg1, String arg2, String[] arg3) {         throw new UnsupportedOperationException();     } } 

Then add your Places Autocomplete API client code into the query method on the content provider. You extract the user input as follows:

String query = uri.getLastPathSegment().toLowerCase(); 

Add the PlacesSuggestionProvider to your AndroidManifest, and make sure your activity has a searchable configuration.

    <application         android:icon="@drawable/ic_launcher"         android:label="@string/app_name" >          <activity android:name=".PlacesSearchViewActivity" >             <intent-filter>                 <action android:name="android.intent.action.SEARCH" />                 <action android:name="android.intent.action.MAIN" />                  <category android:name="android.intent.category.LAUNCHER" />             </intent-filter>              <meta-data                 android:name="android.app.searchable"                 android:resource="@xml/searchable" />         </activity>          <provider             android:name="com.example.google.places.PlacesSuggestionProvider"             android:authorities="com.example.google.places.search_suggestion_provider"             android:syncable="false" />     </application>  </manifest> 

And make sure your searchable configuration (res/xml/searchable.xml) has a search suggest authority.

<?xml version="1.0" encoding="utf-8"?> <searchable xmlns:android="http://schemas.android.com/apk/res/android"     android:label="@string/app_name"     android:hint="@string/search_hint"     android:searchSuggestAuthority="com.example.google.places.search_suggestion_provider"> </searchable> 

The authority should be the same in AndroidManifest.xml, searchable.xml, and your content provider.

Create a options menu for your ActionBar that includes a SearchView (/res/menu/options_menu.xml).

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

Configure your Activity with a SearchView that's associated with your searchable configuration/

@Override public boolean onCreateOptionsMenu(Menu menu) {     // Inflate the options menu from XML     MenuInflater inflater = getMenuInflater();     inflater.inflate(R.menu.options_menu, menu);      SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);     SearchView searchView = (SearchView) menu.findItem(R.id.menu_search).getActionView();     // Tells your app's SearchView to use this activity's searchable configuration     searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));     searchView.setIconifiedByDefault(false); // Do not iconify the widget; expand it by default      return true; } 

A few key docs are:

Adding Custom Suggestions: http://developer.android.com/guide/topics/search/adding-custom-suggestions.html

Creating a Content Provider: http://developer.android.com/guide/topics/providers/content-provider-creating.html

Using a Search Widget: http://developer.android.com/guide/topics/search/search-dialog.html#UsingSearchWidget

Answer 2

AutoCompleteTextView with google search Api

your xml

  <AutoCompleteTextView     android:id="@+id/main_omnibox_input"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:layout_gravity="center"     android:background="@null"      android:hint="Search"       android:focusable="true"     android:focusableInTouchMode="true"                                       android:selectAllOnFocus="true"     android:singleLine="true"      android:textSize="@dimen/_14sdp" /> 

your java code

  this.inputBox = (AutoCompleteTextView) findViewById(R.id.main_omnibox_input);   inputBox.setAdapter(new SearchAutocompleteAdapter(SearchActivity.this, new SearchAutocompleteAdapter.OnSearchCommitListener() {         @Override         public void onSearchCommit(String text) {             inputBox.setText(text);             inputBox.setSelection(text.length());         }     }));       this.inputBox.setOnItemClickListener(new OnItemClickListener() {         public void onItemClick(AdapterView<?> adapterView, View view, int i, long j) {             String charSequence = ((TextView) view.findViewById(android.R.id.text1)).getText().toString();             inputBox.setText(Html.fromHtml(BrowserUnit.urlWrapper(charSequence)), BufferType.SPANNABLE);             inputBox.setSelection(charSequence.length());            // your code            // updateAlbum(charSequence);            // hideSoftInput(SearchActivity.this.inputBox);         }     }); 

SearchAutocompleteAdapter

public class SearchAutocompleteAdapter extends BaseAdapter implements Filterable {  interface OnSearchCommitListener {     void onSearchCommit(String text); }  private final Context mContext; private final OnSearchCommitListener commitListener; private List<String> completions = new ArrayList<>(); static final String searchCompleteUrl = "https://www.google.com/complete/search?client=firefox&q=%s";  SearchAutocompleteAdapter(Context context, OnSearchCommitListener commitListener) {     mContext = context;     this.commitListener = commitListener; }  @Override public int getCount() {     return completions.size(); }  @Override public Object getItem(int position) {     return completions.get(position); }  @Override public long getItemId(int position) {     return position; }  @SuppressLint("ClickableViewAccessibility") @Override @SuppressWarnings("ConstantConditions") public View getView(final int position, View convertView, ViewGroup parent) {     if (convertView == null) {         LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);         convertView = inflater.inflate(android.R.layout.simple_dropdown_item_1line, parent, false);     }     TextView textview = convertView.findViewById(android.R.id.text1);     textview.setText(completions.get(position));     Drawable d = ContextCompat.getDrawable(mContext, R.drawable.icon_goarrowsmall);     final int size = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 32, mContext.getResources().getDisplayMetrics());     d.setBounds(0, 0, size, size);     textview.setCompoundDrawables(null, null, d, null);      textview.setOnTouchListener(new View.OnTouchListener() {         @Override         public boolean onTouch(View view, MotionEvent event) {             if (event.getAction() != MotionEvent.ACTION_DOWN) {                 return false;             }             TextView t = (TextView) view;             if (event.getX() > t.getWidth() - t.getCompoundPaddingRight()) {                 commitListener.onSearchCommit(getItem(position).toString());                 return true;             }             return false;         }     });     parent.setOnTouchListener(new View.OnTouchListener() {         @Override         public boolean onTouch(View view, MotionEvent event) {             if (event.getX() > view.getWidth() - size * 2) {                 return true;             }             return false;         }     });     return convertView; }  @Override public Filter getFilter() {     return new Filter() {         @Override         protected FilterResults performFiltering(CharSequence constraint) {             // Invoked on a worker thread             FilterResults filterResults = new FilterResults();             if (constraint != null) {                 List<String> results = getCompletions(constraint.toString());                 filterResults.values = results;                 filterResults.count = results.size();             }             return filterResults;         }          @Override         @SuppressWarnings("unchecked")         protected void publishResults(CharSequence constraint, FilterResults results) {             if (results != null && results.count > 0) {                 completions = (List<String>) results.values;                 notifyDataSetChanged();             } else {                 notifyDataSetInvalidated();             }         }     }; }  private List<String> getCompletions(String text) {     int total = 0;     byte[] data = new byte[16384];     try {         URL url = new URL(URLUtil.composeSearchUrl(text, searchCompleteUrl, "%s"));         HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();         try {             InputStream in = new BufferedInputStream(urlConnection.getInputStream());             while (total <= data.length) {                 int count = in.read(data, total, data.length - total);                 if (count == -1) {                     break;                 }                 total += count;             }             if (total == data.length) {                 // overflow                 return new ArrayList<>();             }         } finally {             urlConnection.disconnect();         }     } catch (IOException e) {         return new ArrayList<>();     }      JSONArray jsonArray;     try {         jsonArray = new JSONArray(new String(data, StandardCharsets.UTF_8));     } catch (JSONException e) {         return new ArrayList<>();     }     jsonArray = jsonArray.optJSONArray(1);     if (jsonArray == null) {         return new ArrayList<>();     }     final int MAX_RESULTS = 10;     List<String> result = new ArrayList<>(Math.min(jsonArray.length(), MAX_RESULTS));     for (int i = 0; i < jsonArray.length() && result.size() < MAX_RESULTS; i++) {         String s = jsonArray.optString(i);         if (s != null && !s.isEmpty()) {             result.add(s);         }     }     return result; } 

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