Drop down does not appear in AutoCompleteTextView

Question

I'm working on a project in which I have to access data from SQLite3 database and show suggestions to user while typing. I have tried this with AutoCompleteTextView, but it's not working. I'm working on this code:

ArrayList<String> sugestion = new ArrayList<String>();


public ViewGroup onCreateView (LayoutInflater inflater , ViewGroup container , Bundle savedInstanceState )
{
myAutoComplete = (AutoCompleteTextView) group.findViewById(R.id.searchit);

searchDB = new searchAdapter(getActivity());

searchDB.getWritableDatabase();

myAutoComplete.addTextChangedListener(new TextWatcher(){
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            suggestion = searchDB.getSuggestion(s.toString());

            Collections.sort(suggestion);

            String[] item = new String[suggestion.size()];

            item = suggestion.toArray(item);

            for(String word : item)
                System.out.println(word);

        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {                

        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });

searchAdapter = new ArrayAdapter<String>(getActivity() , android.R.layout.simple_dropdown_item_1line, item);

        myAutoComplete.setAdapter(searchAdapter);

...
}

I have checked both the ArrayList(from database) and String[] array by printing it, they are having strings arranged.

My xml layout:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id = "@+id/group"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  >


<AutoCompleteTextView
        android:id="@+id/searchit"
         android:layout_marginTop="15dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="Choose The Country" >

        <requestFocus />
    </AutoCompleteTextView>

.....
</RelativeLayout>

Dropdown for string suggestion does not appear while typing. I have also tried with my own layout using textview instead of android.R.layout.simple_dropdown_item_1line. What am I missing here?. Any help will be appreciated

Answer 1

Try this...

You have set the adapter only in onCreate(). But you have populated value for your item array only inside onTextChanged in TextWatcher. so, try to set the adapter afetr populating your item array.

            myAutoComplete.addTextChangedListener(new TextWatcher(){
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            suggestion = searchDB.getSuggestion(s.toString());

            Collections.sort(suggestion);

            String[] item = new String[suggestion.size()];

            item = suggestion.toArray(item);

            for(String word : item)
                System.out.println(word);

        searchAdapter = new ArrayAdapter<String>(getActivity() , android.R.layout.simple_list_item_1, item);

        myAutoComplete.setAdapter(searchAdapter);
        myAutoComplete.setThreshold(1);

        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {                

        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });

Answer 2

try this

myAutoComplete.showDropDown()