Android 5.0 v7扩展包之RecyclerView的使用以及通用适配器的封装实现

添加Gradle依赖

compile ‘com.android.support:appcompat-v7:23.2.1‘compile ‘com.android.support:recyclerview-v7:23.2.1‘

备注：recyclerview的版本号要与appcompat的一致，此处为： v7:23.2.1

以泛型方式定义通用RecyclerViewHold对象，内部以SparseArray存储View对象，提高xml的解析速度。

/** * Created by Administrator on 2016/6/14. * 通用Recycler.ViewHolder */public class UnityRecyclerAdapterViewHolder extends RecyclerView.ViewHolder {    private static final UtilsLog lg = UtilsLog.getLogger(UnityRecyclerAdapterViewHolder.class);    private SparseArray<View> mViews;    private View mConvertView;

    public UnityRecyclerAdapterViewHolder(View itemView, ViewGroup parent) {        super(itemView);        this.mConvertView = itemView;        this.mViews = new SparseArray<>();}

    public View getConvertItemView() {        return mConvertView;}

    /**     * 通过viewId获取控件     *     * @param viewId* @return*/public <T extends View> T generateView(int viewId) {        View view = mViews.get(viewId);        if (view == null) {            view = mConvertView.findViewById(viewId);mViews.put(viewId, view);}        return (T) view;}

    public <T extends View> T generateView(int viewId, Class<T> clz) {        return (T) generateView(viewId);}}

重写onCreateViewHolder与onBindViewHolder，其中onCreateViewHolder为每个Item生成View对象，并封装至ViewHolder中返回；onBindViewHolder负责渲染数据至View

/** * Created by Administrator on 2016/6/15. * Recycler.Adapter基类 * 1.getItemLayoutId与getItemLayoutView二者选择其一进行复写：此处为支持布局以及代码方式 * 2.该类还可以继续扩展，对仅有单个布局的情况，可以通过构造方法直接注入itemLayoutId */public abstract class AbsUnityBaseRecyclerAdapter<T> extends RecyclerView.Adapter<UnityRecyclerAdapterViewHolder> implements INotifyAdapterDataSetChange {

    private static final UtilsLog lg = UtilsLog.getLogger(AbsUnityBaseRecyclerAdapter.class);    private IAdapterDataModifyHelper<T> IAdapterataModifyHelper;//操作数据的Helper类private LayoutInflater layoutInflater;

    public AbsUnityBaseRecyclerAdapter() {        this.IAdapterataModifyHelper = new DataModifyHelper<>();}

    public IAdapterDataModifyHelper<T> getDataModifyHelper() {        this.IAdapterataModifyHelper.setNotifyAdapterDataSetChange(this);        return IAdapterataModifyHelper;}

    /*系统重写函数*/@Overridepublic UnityRecyclerAdapterViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        lg.e("onCreateViewHolder");        if (this.layoutInflater == null) {            this.layoutInflater = LayoutInflater.from(parent.getContext());}        return new UnityRecyclerAdapterViewHolder(getItemLayoutView(viewType), parent);}

    @Overridepublic void onBindViewHolder(UnityRecyclerAdapterViewHolder holder, int position) {        lg.e("onBindViewHolder with postion[" + position + "]:" + holder.toString());convert(IAdapterataModifyHelper.getDataResources().get(position), holder, position);}

    @Overridepublic int getItemCount() {        return IAdapterataModifyHelper.getDataResources().size();}

    /**     * 填充数据     *     * @param viewHolder* @param position*/public abstract void convert(T itemEntity, UnityRecyclerAdapterViewHolder viewHolder, int position);

/**     * 通过ItemViewType返回布局id     *     * @param viewType* @return*/public int getItemLayoutId(int viewType) {        return 0;}

    /**     * 通过viewType返回指定Item布局     *     * @param viewType* @return*/public View getItemLayoutView(int viewType) {        return layoutInflater.inflate(getItemLayoutId(viewType), null);}

    @Overridepublic void notifyAdapter() {        notifyDataSetChanged();}}

具体使用方式如下，

adapter = new SingleItemRecyclerAdapter<CorePageEntity>(R.layout.simple_item_horizontal) {    @Overridepublic void convert(CorePageEntity itemEntity, UnityRecyclerAdapterViewHolder viewHolder, int position) {        if (position != 0) {            lg.e("convert with position " + position + ":" + viewHolder.toString());}        viewHolder.generateView(R.id.imgItemCommon, ImageView.class).setVisibility(View.GONE);viewHolder.generateView(R.id.tvItemCommon, TextView.class).setText(itemEntity.getCorePageTitle());}};

gridActMain.setAdapter(adapter);gridActMain.setLayoutManager(new GridLayoutManager(getCurActivity(), 1));

adapter.getDataModifyHelper().setDataResource(//添加数据集);

源码链接：https://github.com/xiaoxuan948/AndroidUnityLab/tree/master/unity_base_dev_helper/src/main/java/com/coca/unity_base_dev_helper/adapter/recycler_view

扩展功能包括刷新、添加头尾布局，请查看http://m.blog.csdn.net/article/details?plg_nld=1&id=51153978&plg_auth=1&plg_uin=1&plg_usr=1&plg_vkey=1&plg_nld=1&plg_dev=1

# 后续添加onItemClicklistener事件

来自为知笔记(Wiz)