RecyclerView的簡單使用

1、在布局文件中聲明

<android.support.v7.widget.RecyclerView
    android:id="@+id/my_recycler_view"
    android:scrollbars="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

2、在Activity中使用

// 1,找到這個View
mRecyclerView = (RecyclerView)findViewById(R.id.my_recycler_view);
// 2,設置布局管理LayoutManager
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
// 3，（可選）如果可以確定每個item的高度是固定的，設置這個選項可以提高性能
mRecyclerView.setHasFixedSize(true);
// 4，設置Adapter
mRecyclerView.setAdapter(new MyAdapter());

目前SDK中提供了三種自帶的LayoutManager:

• LinearLayoutManager

  </li>

• GridLayoutManager

  </li>

• StaggeredGridLayoutManager

  </li> </ul>

  LinearLayoutManager

  mLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);

  GridLayoutManager

  mLayoutManager = new GridLayoutManager(context,columNum);
  mRecyclerView.setLayoutManager(mLayoutManager);

  注：在Grid布局中也可以設置列表的Orientation屬性，來實現橫向和縱向的Grid布局。

  StaggeredGridLayoutManager

  瀑布流就使用StaggeredGridLayoutManager吧，具體使用方法見http://blog.csdn.net/duanymin/article/details/44979355

   

  3、Adapter的創建

  public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
      public String[] datas = null;
      public MyAdapter(String[] datas) {
          this.datas = datas;
      }
      //創建新View，被LayoutManager所調用
      @Override
      public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
          View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item,viewGroup,false);
          ViewHolder vh = new ViewHolder(view);
          return vh;
      }
      //將數據與界面進行綁定的操作
      @Override
      public void onBindViewHolder(ViewHolder viewHolder, int position) {
          viewHolder.mTextView.setText(datas[position]);
      }
      //獲取數據的數量
      @Override
      public int getItemCount() {
          return datas.length;
      }
      //自定義的ViewHolder，持有每個Item的的所有界面元素
      public static class ViewHolder extends RecyclerView.ViewHolder {
          public TextView mTextView;
          public ViewHolder(View view){
          super(view);
              mTextView = (TextView) view.findViewById(R.id.text);
          }
      }
  }

  
  

  4、添加單擊事件

  // 1 定義接口
  public static interface OnRecyclerViewItemClickListener {
      void onItemClick(View view , DataModel data);
  }
  
  // 2 添加接口和設置接口的方法
  private OnRecyclerViewItemClickListener mOnItemClickListener = null;
  public void setOnItemClickListener(OnRecyclerViewItemClickListener listener) {
      this.mOnItemClickListener = listener;
  }
  // 3 在Adapter實現OnClickListener方法
  public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> implements View.OnClickListener{
      @Override
      public ViewHolder onCreateViewHolder(ViewGroup viewGroup, final int i) {
          View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item, viewGroup, false);
          ViewHolder vh = new ViewHolder(view);
          //將創建的View注冊點擊事件
          view.setOnClickListener(this);
          return vh;
      }
      @Override
      public void onBindViewHolder(ViewHolder viewHolder, final int i) {
          viewHolder.mTextView.setText(datas.get(i).title);
          //將數據保存在itemView的Tag中，以便點擊時進行獲取
          viewHolder.itemView.setTag(datas.get(i));
      }
      ...
      @Override
      public void onClick(View v) {
          if (mOnItemClickListener != null) {
              //注意這里使用getTag方法獲取數據
  
      }
  ...
  
  }</pre>
  
  在Activity中 
  
  mAdapter = new MyAdapter(getDummyDatas());
  mRecyclerView.setAdapter(mAdapter);
  mAdapter.setOnItemClickListener(new MyAdapter.OnRecyclerViewItemClickListener() {
      @Override
      public void onItemClick(View view, DataModel data) {
          //DO your fucking bussiness here!
      }
  });
  
  
  5、Item動畫 
  
  // 設置item動畫 mRecyclerView.setItemAnimator(new DefaultItemAnimator());
  
  如果要自定義動畫效果需要繼承ItemAnimator 
  
  GitHub上的動畫效果：RecyclerViewItemAnimators 
  
    
  
  6、更新數據 
  
  這里更新數據集不是用adapter.notifyDataSetChanged()而是 notifyItemInserted(position)與notifyItemRemoved(position) 否則沒有動畫效果。  
  
  為adapter中添加兩個方法： 
  
  public void addData(int position) {
      mDatas.add(position, "Insert One");
      notifyItemInserted(position);
  }
  
  public void removeData(int position) {
      mDatas.remove(position);
      notifyItemRemoved(position);
  }</pre>
  
  來自：http://www.cnblogs.com/huangzx/p/4594980.html