下拉刷新和上拉刷新都用SwipeRefreshLayout 自带的进度条
布局
item布局
Adapter
package com.liu.swiperefreshlayoutrecyclerviewdemo.adapter;import android.content.Context;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.TextView;import android.widget.Toast;import com.liu.swiperefreshlayoutrecyclerviewdemo.R;import java.util.List;import butterknife.BindView;import butterknife.ButterKnife;/** * Created by 刘楠 on 2016/9/10 0010.18:06 */public class RefreshAdapter extends RecyclerView.Adapter{ Context mContext; LayoutInflater mInflater; List mDatas; public RefreshAdapter(Context context, List datas) { mContext = context; mInflater = LayoutInflater.from(context); mDatas = datas; } @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View itemView = mInflater.inflate(R.layout.item_refresh_recylerview, parent, false); return new ItemViewHolder(itemView); } @Override public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { if(holder instanceof ItemViewHolder){ ItemViewHolder itemViewHolder = (ItemViewHolder) holder; String str = mDatas.get(position); itemViewHolder.mTvContent.setText(str); } } @Override public int getItemCount() { return mDatas.size(); } @Override public int getItemViewType(int position) { return super.getItemViewType(position); } public class ItemViewHolder extends RecyclerView.ViewHolder { @BindView(R.id.tvContent) TextView mTvContent; public ItemViewHolder(View itemView) { super(itemView); ButterKnife.bind(this,itemView); initListener(itemView); } private void initListener(View itemView) { itemView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(mContext, "poistion "+ getAdapterPosition(), Toast.LENGTH_SHORT).show(); } }); } } public void AddHeaderItem(List items){ mDatas.addAll(0,items); notifyDataSetChanged(); } public void AddFooterItem(List items){ mDatas.addAll(items); notifyDataSetChanged(); }}
Activity
package com.liu.swiperefreshlayoutrecyclerviewdemo;import android.graphics.Color;import android.os.Bundle;import android.os.Handler;import android.support.v4.widget.SwipeRefreshLayout;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.view.Window;import android.widget.Toast;import com.liu.swiperefreshlayoutrecyclerviewdemo.adapter.RefreshAdapter;import java.util.ArrayList;import java.util.List;import butterknife.BindView;import butterknife.ButterKnife;public class MainActivity extends AppCompatActivity { @BindView(R.id.recyclerView) RecyclerView mRecyclerView; @BindView(R.id.swipeRefreshLayout) SwipeRefreshLayout mSwipeRefreshLayout; List mDatas = new ArrayList<>(); private RefreshAdapter mRefreshAdapter; private LinearLayoutManager mLinearLayoutManager; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_main); ButterKnife.bind(this); initView(); initData(); initListener(); } private void initView() { mSwipeRefreshLayout.setColorSchemeColors(Color.RED,Color.BLUE,Color.GREEN); } private void initData() { for (int i = 0; i < 10; i++) { mDatas.add(" Item "+i); } initRecylerView(); } private void initRecylerView() { mRefreshAdapter = new RefreshAdapter(this,mDatas); mLinearLayoutManager = new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false); mRecyclerView.setLayoutManager(mLinearLayoutManager); mRecyclerView.setAdapter(mRefreshAdapter); } private void initListener() { initPullRefresh(); initLoadMoreListener(); } private void initPullRefresh() { mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { @Override public void onRefresh() { new Handler().postDelayed(new Runnable() { @Override public void run() { List headDatas = new ArrayList (); for (int i = 20; i <30 ; i++) { headDatas.add("Heard Item "+i); } mRefreshAdapter.AddHeaderItem(headDatas); //刷新完成 mSwipeRefreshLayout.setRefreshing(false); Toast.makeText(MainActivity.this, "更新了 "+headDatas.size()+" 条目数据", Toast.LENGTH_SHORT).show(); } }, 3000); } }); } private void initLoadMoreListener() { mRecyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() { int lastVisibleItem ; @Override public void onScrollStateChanged(RecyclerView recyclerView, int newState) { super.onScrollStateChanged(recyclerView, newState); //判断RecyclerView的状态 是空闲时，同时，是最后一个可见的ITEM时才加载 if(newState==RecyclerView.SCROLL_STATE_IDLE&&lastVisibleItem+1==mRefreshAdapter.getItemCount()){ new Handler().postDelayed(new Runnable() { @Override public void run() { List footerDatas = new ArrayList (); for (int i = 0; i< 10; i++) { footerDatas.add("footer item" + i); } mRefreshAdapter.AddFooterItem(footerDatas); Toast.makeText(MainActivity.this, "更新了 "+footerDatas.size()+" 条目数据", Toast.LENGTH_SHORT).show(); } }, 3000); } } @Override public void onScrolled(RecyclerView recyclerView, int dx, int dy) { super.onScrolled(recyclerView, dx, dy); LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager(); //最后一个可见的ITEM lastVisibleItem=layoutManager.findLastVisibleItemPosition(); } }); }} 实现下拉刷新用SwipeRefreshLayout 自带的进度条， 上拉刷新用类似ListView的刷新 提示“加载中”等信息。
load_more 布局
Adapter
package com.liu.swiperefreshlayoutrecyclerviewdemo.adapter;import android.content.Context;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.LinearLayout;import android.widget.ProgressBar;import android.widget.TextView;import android.widget.Toast;import com.liu.swiperefreshlayoutrecyclerviewdemo.R;import java.util.List;import butterknife.BindView;import butterknife.ButterKnife;/** * Created by 刘楠 on 2016/9/10 0010.18:06 */public class RefreshAdapter extends RecyclerView.Adapter{ Context mContext; LayoutInflater mInflater; List mDatas; private static final int TYPE_ITEM = 0; private static final int TYPE_FOOTER = 1; //上拉加载更多 public static final int PULLUP_LOAD_MORE = 0; //正在加载中 public static final int LOADING_MORE = 1; //没有加载更多 隐藏 public static final int NO_LOAD_MORE = 2; //上拉加载更多状态-默认为0 private int mLoadMoreStatus = 0; public RefreshAdapter(Context context, List datas) { mContext = context; mInflater = LayoutInflater.from(context); mDatas = datas; } @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { if (viewType == TYPE_ITEM) { View itemView = mInflater.inflate(R.layout.item_refresh_recylerview, parent, false); return new ItemViewHolder(itemView); } else if (viewType == TYPE_FOOTER) { View itemView = mInflater.inflate(R.layout.load_more_footview_layout, parent, false); return new FooterViewHolder(itemView); } return null; } @Override public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { if (holder instanceof ItemViewHolder) { ItemViewHolder itemViewHolder = (ItemViewHolder) holder; String str = mDatas.get(position); itemViewHolder.mTvContent.setText(str); } else if (holder instanceof FooterViewHolder) { FooterViewHolder footerViewHolder = (FooterViewHolder) holder; switch (mLoadMoreStatus) { case PULLUP_LOAD_MORE: footerViewHolder.mTvLoadText.setText("上拉加载更多..."); break; case LOADING_MORE: footerViewHolder.mTvLoadText.setText("正加载更多..."); break; case NO_LOAD_MORE: //隐藏加载更多 footerViewHolder.mLoadLayout.setVisibility(View.GONE); break; } } } @Override public int getItemCount() { //RecyclerView的count设置为数据总条数+ 1（footerView） return mDatas.size() + 1; } @Override public int getItemViewType(int position) { if (position + 1 == getItemCount()) { //最后一个item设置为footerView return TYPE_FOOTER; } else { return TYPE_ITEM; } } public class ItemViewHolder extends RecyclerView.ViewHolder { @BindView(R.id.tvContent) TextView mTvContent; public ItemViewHolder(View itemView) { super(itemView); ButterKnife.bind(this, itemView); initListener(itemView); } private void initListener(View itemView) { itemView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(mContext, "poistion " + getAdapterPosition(), Toast.LENGTH_SHORT).show(); } }); } } public class FooterViewHolder extends RecyclerView.ViewHolder { @BindView(R.id.pbLoad) ProgressBar mPbLoad; @BindView(R.id.tvLoadText) TextView mTvLoadText; @BindView(R.id.loadLayout) LinearLayout mLoadLayout; public FooterViewHolder(View itemView) { super(itemView); ButterKnife.bind(this,itemView); } } public void AddHeaderItem(List items) { mDatas.addAll(0, items); notifyDataSetChanged(); } public void AddFooterItem(List items) { mDatas.addAll(items); notifyDataSetChanged(); } /** * 更新加载更多状态 * @param status */ public void changeMoreStatus(int status){ mLoadMoreStatus=status; notifyDataSetChanged(); }}
Activity
变更加载更多方法
private void initLoadMoreListener() { mRecyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() { int lastVisibleItem ; @Override public void onScrollStateChanged(RecyclerView recyclerView, int newState) { super.onScrollStateChanged(recyclerView, newState); //判断RecyclerView的状态 是空闲时，同时，是最后一个可见的ITEM时才加载 if(newState==RecyclerView.SCROLL_STATE_IDLE&&lastVisibleItem+1==mRefreshAdapter.getItemCount()){ //设置正在加载更多 mRefreshAdapter.changeMoreStatus(mRefreshAdapter.LOADING_MORE); new Handler().postDelayed(new Runnable() { @Override public void run() { List footerDatas = new ArrayList (); for (int i = 0; i< 10; i++) { footerDatas.add("footer item" + i); } mRefreshAdapter.AddFooterItem(footerDatas); //设置回到上拉加载更多 mRefreshAdapter.changeMoreStatus(mRefreshAdapter.PULLUP_LOAD_MORE); Toast.makeText(MainActivity.this, "更新了 "+footerDatas.size()+" 条目数据", Toast.LENGTH_SHORT).show(); } }, 3000); } } @Override public void onScrolled(RecyclerView recyclerView, int dx, int dy) { super.onScrolled(recyclerView, dx, dy); LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager(); //最后一个可见的ITEM lastVisibleItem=layoutManager.findLastVisibleItemPosition(); } }); } 
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