use filter for listView

See more:

Java

Mobile

Android

JSON

my app work online my List View wuth simpleadapter fill with hashMap i want add edit text in top of list and when user put word list fitre im used below code but it not working whwn put word in edit text list dont show any thing
please help me please

    @Override
    protected void onPostExecute(Void result) {
        super.onPostExecute(result);

        SimpleAdapter adapter = new SimpleAdapter(
                MainActivity.this, contactList,
                R.layout.list_item, new String[] { TAG_TITLE ,TAG_DATE,TAG_TEASER }, new int[] { R.id.title,R.id.date  ,R.id.teaser
                         });

        setListAdapter(adapter);
    
      EditText mEditText= (EditText) findViewById(R.id.editText);
                  
                   getListView().setTextFilterEnabled(true);
                   adapter.notifyDataSetChanged();
                    String s=mEditText.getText().toString();
                    mEditText.addTextChangedListener(new TextWatcher() {

                        @Override
                        public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
                            // When user changed the Text
                       MainActivity.this. adapter.getFilter().filter(cs);
                        }
                        @Override
                        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
                                int arg3) {

                        }
                        @Override
                        public void afterTextChanged(Editable arg0) {

                        }
                    });
}
}