RecyclerView的简单使用

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

// 1,找到这个View
mRecyclerView = (RecyclerView)findViewById(R.id.my_recycler_view);
// 2,设置布局管理LayoutManager
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
// 3，（可选）如果可以确定每个item的高度是固定的，设置这个选项可以提高性能
mRecyclerView.setHasFixedSize(true);
// 4，设置Adapter
mRecyclerView.setAdapter(new MyAdapter());

mLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);

 1 public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
 2     public String[] datas = null;
 3     public MyAdapter(String[] datas) {
 4         this.datas = datas;
 5     }
 6     //创建新View，被LayoutManager所调用
 7     @Override
 8     public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
 9         View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item,viewGroup,false);
10         ViewHolder vh = new ViewHolder(view);
11         return vh;
12     }
13     //将数据与界面进行绑定的操作
14     @Override
15     public void onBindViewHolder(ViewHolder viewHolder, int position) {
16         viewHolder.mTextView.setText(datas[position]);
17     }
18     //获取数据的数量
19     @Override
20     public int getItemCount() {
21         return datas.length;
22     }
23     //自定义的ViewHolder，持有每个Item的的所有界面元素
24     public static class ViewHolder extends RecyclerView.ViewHolder {
25         public TextView mTextView;
26         public ViewHolder(View view){
27         super(view);
28             mTextView = (TextView) view.findViewById(R.id.text);
29         }
30     }
31 }

// 1 定义接口
public static interface OnRecyclerViewItemClickListener {
    void onItemClick(View view , DataModel data);
}

// 2 添加接口和设置接口的方法
private OnRecyclerViewItemClickListener mOnItemClickListener = null;
public void setOnItemClickListener(OnRecyclerViewItemClickListener listener) {
    this.mOnItemClickListener = listener;
}

// 3 在Adapter实现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);
        //将创建的View注册点击事件
        view.setOnClickListener(this);
        return vh;
    }
    @Override
    public void onBindViewHolder(ViewHolder viewHolder, final int i) {
        viewHolder.mTextView.setText(datas.get(i).title);
        //将数据保存在itemView的Tag中，以便点击时进行获取
        viewHolder.itemView.setTag(datas.get(i));
    }
    ...
    @Override
    public void onClick(View v) {
        if (mOnItemClickListener != null) {
            //注意这里使用getTag方法获取数据

        }
    
    ...
}

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!
    }
});

// 设置item动画
mRecyclerView.setItemAnimator(new DefaultItemAnimator());

public void addData(int position) {
    mDatas.add(position, "Insert One");
    notifyItemInserted(position);
}

public void removeData(int position) {
    mDatas.remove(position);
    notifyItemRemoved(position);
}