a main activity with the new ClearableAutoCompleteTextView and a method to toggle between the visibility of the the search icon and the search box

MainActivity.java

@Override
public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	// ......
	// ......
	ActionBar actionBar = getSupportActionBar(); // you can use ABS or the non-bc ActionBar
	actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM | ActionBar.DISPLAY_USE_LOGO | ActionBar.DISPLAY_SHOW_HOME
	       | ActionBar.DISPLAY_HOME_AS_UP); // what's mainly important here is DISPLAY_SHOW_CUSTOM. the rest is optional

	LayoutInflater inflater = (LayoutInflater)this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	// inflate the view that we created before
	View v = inflater.inflate(R.layout.actionbar_search, null);
	// the view that contains the search "magnifier" icon
	final ImageView searchIcon = (ImageView) v.findViewById(R.id.search_icon);
	// the view that contains the new clearable autocomplete text view
	final ClearableAutoCompleteTextView searchBox =  (ClearableAutoCompleteTextView) v.findViewById(R.id.search_box);
	
	// start with the text view hidden in the action bar
	searchBox.setVisibility(View.INVISIBLE);
	searchIcon.setOnClickListener(new View.OnClickListener() {
		
		@Override
		public void onClick(View v) {
			toggleSearch(false);
		}
	});
	
	searchBox.setOnClearListener(new OnClearListener() {
		
		@Override
		public void onClear() {
			toggleSearch(true);
		}
	});
	
	searchBox.setOnItemClickListener(new AdapterView.OnItemClickListener() {

		@Override
		public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
			// handle clicks on search resaults here	
		}
		
	});
	
	actionBar.setCustomView(v);
}

// this toggles between the visibility of the search icon and the search box
// to show search icon - reset = true
// to show search box - reset = false
protected void toggleSearch(boolean reset) {
	ClearableAutoCompleteTextView searchBox = (ClearableAutoCompleteTextView) findViewById(R.id.search_box);
	ImageView searchIcon = (ImageView) findViewById(R.id.search_icon);
	if (reset) {
		// hide search box and show search icon
		searchBox.setText("");
		searchBox.setVisibility(View.GONE);
		searchIcon.setVisibility(View.VISIBLE);
		// hide the keyboard
		InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
		imm.hideSoftInputFromWindow(searchBox.getWindowToken(), 0);
	} else {
		// hide search icon and show search box
		searchIcon.setVisibility(View.GONE);
		searchBox.setVisibility(View.VISIBLE);
		searchBox.requestFocus();
		// show the keyboard
		InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
		imm.showSoftInput(searchBox, InputMethodManager.SHOW_IMPLICIT);
	}
	
}

final ClearableAutoCompleteTextView searchBox = (ClearableAutoCompleteTextView) v.findViewById(R.id.search_box);
Getting parse error.....cannot parse ...

what type of control is R.id.search_box? and in which layout file it is residing?