Android 列表对话框

final String[] items = {"添加", "更新", "删除"};
final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("请选择");
builder.setItems(items, new DialogInterface.OnClickListener() {
      @Override
      public void onClick(DialogInterface dialog, int which) {
             dialog.dismiss();
             Toast.makeText(getActivity(), items[which], Toast.LENGTH_SHORT).show();
      }
 });
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
              dialog.dismiss();
              Toast.makeText(getActivity(), "确定", Toast.LENGTH_SHORT).show();
        }
});
builder.create().show();