alertdialog selected item 질문 (소스 첨부)

Question

	public void varietySelect() {
		alert = new AlertDialog.Builder(getBaseContext());
		String varietyStr = variety.getText().toString().trim();
		int position = 0;
		for(String item : varietyList) {
			position++;
			if(varietyStr.equals(item)) {
				selected = position;
			}
		}
		
		ArrayAdapter<String> adapter = new ArrayAdapter(getBaseContext(), android.R.layout.simple_list_item_1, varietyList);
		alert.setAdapter(adapter,  new DialogInterface.OnClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int which) {
				variety.setText(varietyList.get(which).toString().trim());
			}
		});
		AlertDialog shareAlert = alert.create();
		shareAlert.show();
	}

 

 

 

 

 

	public void varietySelect() {
		String varietyStr = variety.getText().toString().trim();
		int position = 0;
		for(String item : varietyList) {
			position++;
			if(varietyStr.equals(item)) {
				selected = position;
			}
		}
		
		Logger.debug(String.valueOf(selected));
		Logger.debug(varietyList.toString());
		ArrayAdapter<String> adapter = new ArrayAdapter(ShopCategoryLowDetail.this , android.R.layout.simple_list_item_1, varietyList);
		alert = new AlertDialog.Builder(ShopCategoryLowDetail.this)
		.setSingleChoiceItems(adapter, selected,
				new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int i) {
						variety.setText(varietyList.get(i).toString().trim());
						dialog.dismiss();
					}
			}).show();

selected 를 어디서 정해야할지 모르겟습니다.