如何在SearchDialog中实现TextWatcher

我需要根据SearchDialog中的用户输入来更新ListView，这样的话就需要给SearchDialog设置一个TextWatcher。如何实现这个功能呢？

你可以照下面做：

yourEditText.addTextChangedListener(new TextWatcher() {
    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        // process new items for list view
   }
   @Override
    public void beforeTextChanged(CharSequence s, int start, int count,
            int after) {
        // TODO Auto-generated method stub
    }
   @Override
    public void afterTextChanged(Editable s) {
        // push new items into adapter and call notifyDataSetChanged() on it
   }
});