kotlin 抽象类，匿名内部类

Question

private var adapter: CommonAdapter<Map<String, Any>>? = null
 adapter = object : CommonAdapter<Map<String, Any>>(this, R.layout.lv_bklist, maps) {
            override fun convert(holder: ViewHolder, map: Map<String, Any>, position: Int) {
            }
        }
rv_data.adapter=adapter;
(adapter as CommonAdapter<Map<String, Any>>).notifyDataSetChanged()

有用kotlin的吗~

最后的as特别不舒服，

有什么简写的方式吗