RecyclerView的用法

1.添加依赖库

compile 'com.android.support:recyclerview-v7:25.3.1'

2. 代码实现

布局文件：

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

创建Adapter：

public class ActivityAdapter extends RecyclerView.Adapter<ActivityAdapter.ViewHolder> {    private List<ActivityBean> mData;    private OnItemClickListener mOnItemClickListener;    public ActivityAdapter(List<ActivityBean> mData) {        this.mData = mData;    }    @Override    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = LayoutInflater.from(parent.getContext())                .inflate(R.layout.layout_activity_item, parent, false);        return new ViewHolder(view);    }    @Override    public void onBindViewHolder(final ViewHolder holder, int position) {        holder.tvTitle.setText(mData.get(position).getTitle());        holder.itemView.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                if(mOnItemClickListener != null) {                    mOnItemClickListener.onItemClick(v, holder.getLayoutPosition());                }            }        });    }    @Override    public int getItemCount() {        return mData == null ? 0 : mData.size();    }    static final class ViewHolder extends RecyclerView.ViewHolder {        @BindView(R.id.tv_title)        TextView tvTitle;        public ViewHolder(View itemView) {            super(itemView);            ButterKnife.bind(this, itemView);        }    }    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {        mOnItemClickListener = onItemClickListener;    }    public interface OnItemClickListener {        void onItemClick(View v, int position);    }}

在Activity中初始化RecyclerView：

    private void initRecyclerView() {        //添加数据        addData();        mAdapter = new ActivityAdapter(mData);        //设值layout manager        LinearLayoutManager layoutManager = new LinearLayoutManager(this);        layoutManager.setOrientation(LinearLayoutManager.VERTICAL);        mRecyclerView.setLayoutManager(layoutManager);        //设置item的宽和高为常量，避免了RecyclerView重新计算item的宽高        mRecyclerView.setHasFixedSize(true);        //设置分割线        DividerItemDecoration dividerItemDecoration =                new DividerItemDecoration(this, DividerItemDecoration.VERTICAL);        dividerItemDecoration.setDrawable(ContextCompat.getDrawable(this, R.drawable.recycler_view_divider));        mRecyclerView.addItemDecoration(dividerItemDecoration);        mRecyclerView.setAdapter(mAdapter);        //设置点击事件        mAdapter.setOnItemClickListener(new ActivityAdapter.OnItemClickListener() {            @Override            public void onItemClick(View v, int position) {                startActivity(mData.get(position).getaClass());            }        });    }

3. 设置item的点击效果(api 21以上才有效)

第一种:

android:background="?android:attr/selectableItemBackground"

第二种:

//item的设置android:background="@drawable/activity_recycler_view_item_bg"//res/drawable/activity_recycler_view_item_bg.xml<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android">    <item android:drawable="@color/recycler_view_item_bg_pressed_color" android:state_pressed="true" />    <item android:drawable="@color/recycler_view_item_bg_normal_color" /></selector>//res/drawable-v21/activity_recycler_view_item_bg.xml<?xml version="1.0" encoding="utf-8"?><ripple xmlns:android="http://schemas.android.com/apk/res/android"    android:color="@color/recycler_view_item_bg_pressed_color">    <item android:drawable="@color/recycler_view_item_bg_normal_color" /></ripple>

demo源代码的github地址