Hello,
I am trying to use a SimpleAdapter to populate my
AutoCompleteTextView. I observe that the Filter runs after the third
keystroke as specified in my layout, and "suggestion_list" is being
populated with at least five elements. After the filter runs, the
completionHint drops down from the AutoCompleteTextView, but the there
are no rows underneath (which should contain suggestions).
The underlying datastore is an ArrayList of HashMaps. The HashMap key
to the value desired in the suggestion rows is "vernacular_name".
Since I have specified this in the super() SimpleAdapter constructor,
I assume that it should be calling setViewText with the correct
arguments behind the scenes.
Can anyone see what is wrong with this code, and why the Views
corresponding to suggestions are absent from the AutoCompleteTextView
dropdown?
Thanks,
Karl
public class VernacularAutoComplete extends Activity {
final static String TAG = "VernacularAutoComplete";
ArrayList<HashMap<String, String>> suggestion_list = new
ArrayList<HashMap<String, String>>();
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
this.setContentView(R.layout.autocomplete);
SuggestionListAdapter autocomplete_adapter = new
SuggestionListAdapter(
this);
AutoCompleteTextView textView = (AutoCompleteTextView)
findViewById
(R.id.userText);
textView.setAdapter(autocomplete_adapter);
}
// XXX compiler bug in javac 1.5.0_07-164, we need to implement
Filterable
// to make compilation work
public class SuggestionListAdapter extends SimpleAdapter implements
Filterable {
VernacularFilter vernacular_filter = new VernacularFilter();
public SuggestionListAdapter(Context context) {
super(context, suggestion_list,
android.R.layout.simple_list_item_1,
new String[] { "vernacular_name" },
new int[] { android.R.id.text1 });
}
class VernacularFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence
constraint) {
FilterResults f = new FilterResults();
if (constraint != null) {
// Log.d(TAG, "Running filter...");
ItisMirrorResponseParser imrp = new
ItisMirrorResponseParser(
(String) constraint);
ArrayList<HashMap<String, String>>
filter_result = imrp
.parse();
f.values = filter_result;
f.count = filter_result.size();
}
return f;
}
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
VernacularAutoComplete.this.suggestion_list =
(ArrayList<HashMap<String, String>>) results.values;
SuggestionListAdapter.this.notifyDataSetChanged();
}
}
@Override
public Filter getFilter() {
return vernacular_filter;
}
}
}
~~ autocomplete.xml ~~
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/
android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<AutoCompleteTextView android:id="@+id/userText"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:completionThreshold="3"
android:completionHint="Type a name..."
>
</AutoCompleteTextView>
</LinearLayout>
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