Converting an ArrayAdapter to CursorAdapter for use in a SearchView

That's strange SearchView.setSuggestionsAdapter accepts CursorAdapter only.

You could create MatrixCursor and fill it with data from String array. I hope you have small data collection.

Then pass the cursor to CursorAdapter.

String[] columnNames = {"_id","text"}MatrixCursor cursor = new MatrixCursor(columnNames);String[] array = getResources().getStringArray(R.array.allStrings); //if strings are in resourcesString[] temp = new String[2];int id = 0;for(String item : array){    temp[0] = Integer.toString(id++);        temp[1] = item;    cursor.addRow(temp);}               String[] from = {"text"}; int[] to = {R.id.name_entry};busStopCursorAdapter = new SimpleCursorAdapter(context, R.layout.listentry, cursor, from, to);

I was facing similar problem. You can use SearchView.setSuggestionsAdapter() which only accepts CursorAdapter. On the other hand... what's the point? If you use the standard <android.support.v7.widget.SearchView /> then it contains SearchAutoComplete which extends AppCompatAutoCompleteTextView inside. The following code worked for me:

List<String> items = Lists.newArrayList(new String[] {"aaaaa", "bbbbb", "ccccc", "ddddd"});SearchView searchView = (SearchView) findViewById(R.id.autocomplete_searchview);SearchView.SearchAutoComplete searchSrcTextView = (SearchView.SearchAutoComplete) findViewById(android.support.v7.appcompat.R.id.search_src_text);searchSrcTextView.setThreshold(1);searchSrcTextView.setAdapter(new SuggestionAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, items));searchSrcTextView.setOnItemClickListener(new AdapterView.OnItemClickListener() {    @Override    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {        return;    }});

and the following Adapter code:

public class SuggestionAdapter<T> extends ArrayAdapter<T> {    private List<T> items;    private List<T> filteredItems;    private ArrayFilter mFilter;    public SuggestionAdapter(Context context, @LayoutRes int resource, @NonNull List<T> objects) {        super(context, resource, Lists.<T>newArrayList());        this.items = objects;    }    @Override    public long getItemId(int position) {        return position;    }    @Override    public T getItem(int position) {        return items.get(position);    }    @Override    public Filter getFilter() {        if (mFilter == null) {            mFilter = new ArrayFilter();        }        return mFilter;    }    public int getCount() {        //todo: change to pattern-size        return items.size();    }    private class ArrayFilter extends Filter {        @Override        protected FilterResults performFiltering(CharSequence prefix) {            FilterResults results = new FilterResults();            //custom-filtering of results            results.values = items;            results.count = items.size();            return results;        }        @Override        protected void publishResults(CharSequence constraint, FilterResults results) {            filteredItems = (List<T>) results.values;            if (results.count > 0) {                notifyDataSetChanged();            } else {                notifyDataSetInvalidated();            }        }    }}