自定义RecyclerView上拉加载更多和刷新

1:自定义recyclerViewpublic class XListView extends SwipeRefreshLayout implements IXListViewListener, IXListViewListener.OnItemClick {    private RecyclerView recyclerView;    private IXListViewListener ixListViewListener;//刷新及加载更多回掉    private XListViewAdapter adapter;    private boolean isLoadMore = true;//是否还能加载更多    private static final String TAG = "XListView";    private OnItemClick onItemClick;    public XListView(Context context) {        super(context);        this.init(context);    }    public XListView(Context context, @Nullable AttributeSet attrs) {        super(context, attrs);        this.init(context);    }    private void init(Context context) {        this.recyclerView = new RecyclerView(context);        final LinearLayoutManagerItem layoutManager = new LinearLayoutManagerItem(context);        this.recyclerView.setLayoutManager(layoutManager);        this.setColorSchemeColors(Color.RED, Color.GREEN, Color.YELLOW);        this.recyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() {            private int lastVisibleItem;            @Override            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {                super.onScrollStateChanged(recyclerView, newState);                if (newState != RecyclerView.SCROLL_STATE_IDLE || layoutManager == null || !isLoadMore || isRefreshing())                    return;                int state = adapter.getStatus();                int visibleItemCount = layoutManager.getChildCount();//显示数量                int totalItemCount = adapter.getXlistViewItemCount() + 1;//总数                if (visibleItemCount > 0 && visibleItemCount <= totalItemCount && lastVisibleItem >= totalItemCount - 1 && XListViewAdapter.CLICK_MORE == state) {                    onLoadMore();//加载更多                }            }            @Override            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {                super.onScrolled(recyclerView, dx, dy);                lastVisibleItem = -1;                if (layoutManager == null && !isLoadMore) {                    return;                }                if (dy > 20) {                    lastVisibleItem = layoutManager.findLastVisibleItemPosition();                }            }        });        this.addView(this.recyclerView);    }    public void setLoadMore(boolean loadMore) {        this.isLoadMore = loadMore;    }    /**     * 加载更多完毕     */    public final void stopLoadMore(boolean isData) {        if (this.adapter == null)            return;        if (isData)            this.adapter.changeMoreStatus(XListViewAdapter.CLICK_MORE);        else            this.adapter.changeMoreStatus(XListViewAdapter.NO_DATA);        this.setLoadMore(isData);    }    public final void setXListViewAdapter(XListView.XListViewAdapter adapter) {        this.recyclerView.setAdapter(adapter);        this.adapter = adapter;        if (this.adapter != null)            this.adapter.setIxListViewListener(this);    }    @Override    public final void onRefresh() {        if (ixListViewListener != null && !isLoadData())            this.ixListViewListener.onRefresh();        else            this.setRefreshing(false);    }    @Override    public final void onLoadMore() {        if (this.ixListViewListener != null && !isRefreshing()) {            this.ixListViewListener.onLoadMore();            if (this.adapter != null)                this.adapter.changeMoreStatus(XListViewAdapter.LOADING_MORE);        }    }    @Override    public final void onItemClick(RecyclerView parent, View view, int position, long id) {        if (this.onItemClick != null)            this.onItemClick.onItemClick(parent, view, position, id);    }    public final void setOnItemClick(OnItemClick onItemClick) {        this.onItemClick = onItemClick;    }    public final void setOnRefreshListener(IXListViewListener ixListViewListener) {        this.ixListViewListener = ixListViewListener;        super.setOnRefreshListener(this);        if (this.adapter != null)            this.adapter.setIxListViewListener(this);    }    private boolean isLoadData() {        return XListViewAdapter.LOADING_MORE == this.adapter.getStatus();    }    public class LinearLayoutManagerItem extends LinearLayoutManager {        public LinearLayoutManagerItem(Context context) {            super(context);        }        @Override        public RecyclerView.LayoutParams generateDefaultLayoutParams() {            return new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);        }    }    /**     * 适配器，需要继承     *     * @param <VH>     */    public static abstract class XListViewAdapter<VH extends RecyclerView.ViewHolder> extends RecyclerView.Adapter implements OnClickListener {        private static final int TYPE_FOOTER = 10000;  //顶部FootView        public static final int LOADING_MORE = 1;//正在加载中        public static final int CLICK_MORE = 3;//点击加载更多数据        public static final int NO_DATA = 2;//没有更多数据        private int status = CLICK_MORE;//上拉加载更多状态-默认为0        private XListView xListView;        public Context getContext() {            return xListView.getContext();        }        @Override        public final int getItemViewType(int position) {            int itemCount = getXlistViewItemCount();            if (position == itemCount && xListView.isLoadMore) {                return TYPE_FOOTER;            } else {                return getXlistItemViewType(position);            }        }        @Override        public final int getItemCount() {            int count = getXlistViewItemCount();            if (count <= 0)                return count;            else                return count + (xListView.isLoadMore ? 1 : 0);        }        @Override        public final RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {            if (viewType == TYPE_FOOTER) {//显示底部布局                View layout = LayoutInflater.from(getContext()).inflate(R.layout.footer_layout, null);                FootViewHolder footViewHolder = new FootViewHolder(layout);                footViewHolder.textView = (TextView) layout.findViewById(R.id.footer);                layout.setOnClickListener(this);                footViewHolder.progressBar = (ProgressBar) layout.findViewById(R.id.progressBar);                return footViewHolder;            }            RecyclerView.ViewHolder holder = onXlistViewCreateViewHolder(parent, viewType);            holder.itemView.setOnClickListener(this);            return holder;        }        @Override        public final void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {            String tag = holder.getClass().getName();            if (holder instanceof FootViewHolder) {                FootViewHolder footViewHolder = (FootViewHolder) holder;                String text = "上拉加载更多...";                int visibility = View.GONE;                switch (status) {                    case LOADING_MORE:                        text = "正在加载更多数据...";                        visibility = View.VISIBLE;                        break;                    case NO_DATA:                        text = "没有更多数据";                        break;                    case CLICK_MORE:                        text = "点击加载更多";                        break;                }                footViewHolder.progressBar.setVisibility(visibility);                footViewHolder.textView.setText(text);            } else {                tag = TAG;                onXlistViewBindViewHolder(holder, position);            }            holder.itemView.setTag(position + tag);        }        public abstract RecyclerView.ViewHolder onXlistViewCreateViewHolder(ViewGroup parent, int viewType);        public abstract void onXlistViewBindViewHolder(RecyclerView.ViewHolder holder, int position);        public abstract int getXlistViewItemCount();        public int getXlistItemViewType(int position) {            return super.getItemViewType(position);        }        public final void changeMoreStatus(int status) {            this.status = status;            this.notifyDataSetChanged();        }        public final int getStatus() {            return status;        }        @Override        public final void onClick(View v) {            if (v == null)                return;            String tag = v.getTag().toString();            if (TextUtils.isEmpty(tag))                return;            if (CLICK_MORE == status && xListView != null && tag.contains(FootViewHolder.class.getName())) {                this.xListView.onLoadMore();//加载更多                return;            } else if (tag.contains(TAG)) {                int position = -1;                try {                    position = Integer.parseInt(tag.replaceAll(TAG, "").trim());                } catch (Exception e) {                    e.printStackTrace();                }                if (position < 0)                    return;                this.xListView.onItemClick(xListView.recyclerView, v, position, v.getId());            }        }        public final void setIxListViewListener(XListView ixListViewListener) {            this.xListView = ixListViewListener;        }    }    /**     * 底部加载显示view     */    static class FootViewHolder extends RecyclerView.ViewHolder {        TextView textView;        ProgressBar progressBar;        public FootViewHolder(View itemView) {            super(itemView);        }    }}

2：刷新和家长更多，条目接口

public interface IXListViewListener extends SwipeRefreshLayout.OnRefreshListener {    void onLoadMore();    interface OnItemClick {        void onItemClick(RecyclerView parent, View view, int position, long id);    }}

3：footer  item  (footer_layout.xml)

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:gravity="center"    android:orientation="horizontal"    android:padding="10dp">    <ProgressBar        android:id="@+id/progressBar"        android:layout_width="18dp"        android:layout_height="16dp" />    <TextView        android:id="@+id/footer"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="10dp"        android:text="测试"        android:textSize="14sp" /></LinearLayout>

4：下载地址  http://download.csdn.net/detail/xingwei08246/9777153