Android 关于下接框(spinner)的应用

Android 关于下接框(spinner)的使用

ArrayList<SpinnerItem> aList = new ArrayList<SpinnerItem>();    aList.add(new SpinnerItem(String.valueOf(CategoryType.Cost.ordinal()),getString(R.string.COST)));    aList.add(new SpinnerItem(String.valueOf(CategoryType.income.ordinal()),getString(R.string.IMCOME)));    ArrayAdapter<SpinnerItem> aAdapter =    new ArrayAdapter<SpinnerItem>(this,android.R.layout.simple_spinner_item,aList);    spinnerCategoryType = (Spinner)findViewById(R.id.spCategoryType);                aAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);        //设置下拉菜单的风格        spinnerCategoryType.setAdapter(aAdapter);