Android应用中怎么对RecyclerView Adapter进行封装

 BaseRecyclerViewAdapter adapter = new BaseRecyclerViewAdapter() {  private static final int TYPE_FIR = 1;  private static final int TYPE_SEC = 2;  private static final int TYPE_THR = 3;  @Override  public int getLayoutId(int viewType) {   if (viewType == TYPE_FIR) {    return R.layout.test_activity_recyclerview_item;   } else if (viewType == TYPE_SEC){    return R.layout.test_activity_recyclerview_item_two;   } else {    return R.layout.test_activity_recyclerview_item_three;   }  }  @Override  public int getItemViewType(int position) {   if (position % 3 == 1) {    return TYPE_FIR;   } else if (position % 3 == 2) {    return TYPE_SEC;   } else {    return TYPE_THR;   }  }  @Override  public void onBindRecyclerViewHolder(BaseViewHolder holder, int position) {   if (getItemVIewType(position) == TYPE_FIR) {    // TODO 数据处理及绑定   } else if (getItemVIewType(position) == TYPE_SEC) {    // TODO 数据处理及绑定   } else {    // TODO 数据处理及绑定   }  } };