public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate( savedInstanceState );
        setContentView( R.layout.activity_main );


        List<String> list = new ArrayList<>();

        list.add( "1-Colombo" );
        list.add( "2-MALIGAWATTA" );
        list.add( "3-KELANITHISSA" );
        list.add( "4-4-KANUWA" );
        list.add( "5-THORANA-HANDIYA" );
        list.add( "6-KELANIYA-UNI" );
        list.add( "7-KIRIBATHGODA" );
        list.add( "8-MAHARA-HANDIYA" );
        list.add( "9-KADAWATHA" );
        list.add( "10-GONAHENA-HANDIYA" );

        AutoCompleteTextView searchAutoComplete = (AutoCompleteTextView) findViewById( R.id.start );
        ArrayAdapter<String> newsAdapter = new ArrayAdapter<String>( this, android.R.layout.simple_dropdown_item_1line, list );
        searchAutoComplete.setAdapter( newsAdapter );
        searchAutoComplete.setThreshold( 1 );

        searchAutoComplete.setOnItemClickListener( new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

                Toast.makeText( MainActivity.this, "Hi" + position, Toast.LENGTH_SHORT ).show();
            }
        } );
    }
}