//一定要在PageLoadRecyclerVewAdapter<String> 的泛型參數(shù)里面指定數(shù)據(jù)源item格式
public class SimpleAdapter extends PageLoadRecyclerVewAdapter<String> {
 public SimpleAdapter(List<String> dataList) {
  super(dataList);
 }

 //這里進(jìn)行 數(shù)據(jù)綁定
 @Override
 protected void convert(BaseViewHolder holder, String item) {
  holder.setText(R.id.text, item);
 }

 //這里返回布局item id
 @Override
 protected int getItemLayoutId() {
  return R.layout.item_simple;
 }
}

public class SingleColumnActivity extends BaseActivity<String> implements IOnLoadMoreListener {


 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_single_column);
  RecyclerView rv = findViewById(R.id.rv);
  //實(shí)例化adapter
  mAdapter = new SimpleAdapter(null);
  //給adapter 設(shè)置loadmoreview
  mAdapter.setLoadMoreView(new CommonLoadMoreView());
  //設(shè)置滑動(dòng)到底部時(shí)進(jìn)行更多加載的回調(diào)
  mAdapter.setOnLoadMoreListener(this);
  rv.setAdapter(mAdapter);
  rv.setLayoutManager(new LinearLayoutManager(this));
  request();
 }



 @Override
 public void onLoadMoreRequested() {

  request();
 }

 //這個(gè)函數(shù)不用管
 @Override
 protected List<String> convertRequestData(List<String> originData) {
  return originData;
 }


}

protected void request() {
  NetWorkRequest.request(mAdapter.getDataSize() / PAGE_SIZE + 1, mFailCount, new NetWorkRequest.Callback() {
   @Override
   public void onSuccess(List<String> result) {
    List<T> finalResult = convertRequestData(result);
    if(result.size() >= PAGE_SIZE){// 接口返回了滿滿一頁(yè)的數(shù)據(jù)，這里數(shù)據(jù)加載成功
     if (mAdapter.getDataSize() == 0){
      //當(dāng)前列表里面沒(méi)有數(shù)據(jù)，代表是初次請(qǐng)求，所以這里使用setNewData（）

      mAdapter.setNewData(finalResult);
     }else {
      //列表里面已經(jīng)有數(shù)據(jù)了，這里使用addDataList（），將數(shù)據(jù)添加到列表后面
      mAdapter.addDataList(finalResult);
     }
     //這里調(diào)用adapter。loadMoreComplete（true） 函數(shù)通知列表刷新footview， 這里參數(shù)一定要傳true
     mAdapter.loadMoreComplete(true);
    }else {
     //如果接口返回的數(shù)據(jù)不足一頁(yè)，也就代表沒(méi)有足夠的數(shù)據(jù)了，那么也就沒(méi)有下一頁(yè)數(shù)據(jù)，所以這里
     //認(rèn)定分頁(yè)加載結(jié)束
     //這里的參數(shù)也一定要傳true
     mAdapter.loadMoreEnd(true);
    }
   }

   @Override
   public void onFail() {
    mFailCount++;
    //請(qǐng)求失敗 通知recyclerview 刷新footview 狀態(tài)
    mAdapter.loadMoreFail(true);
   }
  });
 }

 RecyclerView rv = findViewById(R.id.rv);
    mAdapter = new SimpleAdapter(null);
    mAdapter.setLoadMoreView(new CommonLoadMoreView());
    mAdapter.setOnLoadMoreListener(this);
   //這里我們將列表設(shè)置最多兩列
    GridLayoutManager layoutManager = new GridLayoutManager(this, 2);
    layoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
      @Override
      public int getSpanSize(int position) {
       //根據(jù)position 設(shè)置每個(gè)item應(yīng)該占幾列
       //如果當(dāng)前的position是3的整數(shù)倍 我們就讓他占滿2列，其他的只占1列
        return position % 3 == 0 ? 2 : 1 ;
      }
    });
    rv.setLayoutManager(layoutManager);
    rv.setAdapter(mAdapter);

public class MultiPageLoadAdapter extends PageLoadMultiRecyclerViewAdapter<MultiData, BaseViewHolder> {
  public MultiPageLoadAdapter(List<MultiData> dataList) {
    super(dataList);
    //構(gòu)造函數(shù)里面將 每種type 和 type 對(duì)應(yīng)的布局進(jìn)行綁定
    addItemLayout(MultiData.TYPE_TEXT, R.layout.item_simple);
    addItemLayout(MultiData.TYPE_IMAGE, R.layout.item_multi_image);
    addItemLayout(MultiData.TYPE_VIDEO, R.layout.item_multi_video);
  }

  @Override
  protected void convert(BaseViewHolder holder, MultiData item) {
    //在convert中針對(duì)不同的type 進(jìn)行不同的bind邏輯
    switch (holder.getItemViewType()){
      case MultiData.TYPE_VIDEO:
        holder.setText(R.id.text, item.content);
        break;

      case MultiData.TYPE_IMAGE:
        holder.setText(R.id.text, item.content);
        break;

      case MultiData.TYPE_TEXT:
        holder.setText(R.id.text, item.content);
      default:
        break;
    }
  }
}

 RecyclerView recyclerView = findViewById(R.id.rv);
    mAdapter = new MultiPageLoadAdapter(null);
    mAdapter.setLoadMoreView(new CommonLoadMoreView());
    mAdapter.setOnLoadMoreListener(this);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
    recyclerView.setAdapter(mAdapter);