RecycleView下拉刷新和上拉加载实现

效果图：

20191009134017.gif

上拉加载用BaseRecyclerViewAdapterHelper，下拉刷新用SmartRefreshLayout

1、导入包
BaseRecyclerViewAdapterHelper 导入
https://www.jianshu.com/p/dee739e19628

SmartRefreshLayout 导入

 implementation 'com.scwang.smartrefresh:SmartRefreshLayout:1.1.0'

下拉刷新：

 refreshLayout.setOnRefreshListener(new OnRefreshListener() {
            @Override
            public void onRefresh(@NonNull RefreshLayout refreshLayout) {
                articleList.clear();
                page_size=0;
                getArticleData(page_size);
                refreshLayout.finishRefresh(1500);
            }
        });

上拉加载：

    articleAdapter.setOnLoadMoreListener(new BaseQuickAdapter.RequestLoadMoreListener() {
            @Override
            public void onLoadMoreRequested() {
                ++page_size;
                getArticleData(page_size);
            }
        }, newBowenRecycleList);

全部代码

2、定义列表
2.1、xml布局
列表布局（fragment_newbowen.xml）

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorGray"
    android:orientation="vertical">

    <com.scwang.smartrefresh.layout.SmartRefreshLayout
        android:id="@+id/refreshLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/newBowen_recycle_list"
            android:layout_width="match_parent"
            android:overScrollMode="never"
            android:layout_marginBottom="60dp"
            android:layout_height="match_parent" />
    </com.scwang.smartrefresh.layout.SmartRefreshLayout>
</LinearLayout>

item布局(item_newbowen)

<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/card"
    android:layout_width="match_parent"
    android:layout_height="130dp"
    android:layout_marginLeft="10dp"
    android:layout_marginTop="8dp"
    android:layout_marginRight="10dp"
    android:layout_marginBottom="2dp"
    android:orientation="vertical"
    app:cardCornerRadius="8dp">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginLeft="15dp"
        android:layout_marginRight="15dp"
        android:orientation="vertical">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <ImageView
                android:id="@+id/newBowen_img_head"
                android:layout_width="25dp"
                android:layout_height="25dp"
                android:layout_centerVertical="true"
                android:src="@drawable/index_head" />

            <TextView
                android:id="@+id/newBowen_txt_number"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="100dp" />

            <TextView
                android:id="@+id/newBowen_txt_author"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_margin="8dp"
                android:layout_toRightOf="@+id/newBowen_img_head"
                android:text="鸿洋" />

            <TextView
                android:id="@+id/newBowen_txt_label"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_toRightOf="@id/newBowen_txt_author"
                android:background="@drawable/radio_theme"
                android:textColor="@color/theme"
                android:visibility="invisible" />

            <TextView
                android:id="@+id/newBowen_txt_time"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true"
                android:text="一天前" />
        </RelativeLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1">

            <TextView
                android:id="@+id/newBowen_txt_detail"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_margin="8dp"
                android:ellipsize="end"
                android:lines="3"
                android:text="鸿洋"
                android:textColor="@color/colorBlack" />
        </LinearLayout>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="20dp"
            android:layout_marginBottom="3dp">

            <TextView
                android:id="@+id/newBowen_txt_superChapterName"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:text="公众号" />

            <View
                android:layout_width="1dp"
                android:layout_height="10dp"
                android:layout_centerVertical="true"
                android:layout_margin="5dp"
                android:layout_toRightOf="@+id/newBowen_txt_superChapterName"
                android:background="@color/colorBlack" />

            <TextView
                android:id="@+id/newBowen_txt_chapterName"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_marginLeft="10dp"
                android:layout_toRightOf="@+id/newBowen_txt_superChapterName"
                android:text="公众号" />

            <ImageView
                android:visibility="visible"
                android:id="@+id/newBowen_img_more"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentEnd="true"
                android:layout_alignParentRight="true"
                android:src="@drawable/all_more" />
        </RelativeLayout>
    </LinearLayout>
</androidx.cardview.widget.CardView>

2.2、创建bean (Article.class)

public class Article {
    private DataBean data;
    private int errorCode;
    private String errorMsg;

    public DataBean getData() {
        return data;
    }

    public void setData(DataBean data) {
        this.data = data;
    }

    public int getErrorCode() {
        return errorCode;
    }

    public void setErrorCode(int errorCode) {
        this.errorCode = errorCode;
    }

    public String getErrorMsg() {
        return errorMsg;
    }

    public void setErrorMsg(String errorMsg) {
        this.errorMsg = errorMsg;
    }

    public static class DataBean {
        private int curPage;
        private int offset;
        private boolean over;
        private int pageCount;
        private int size;
        private int total;
        private List<DatasBean> datas;

        public int getCurPage() {
            return curPage;
        }

        public void setCurPage(int curPage) {
            this.curPage = curPage;
        }

        public int getOffset() {
            return offset;
        }

        public void setOffset(int offset) {
            this.offset = offset;
        }

        public boolean isOver() {
            return over;
        }

        public void setOver(boolean over) {
            this.over = over;
        }

        public int getPageCount() {
            return pageCount;
        }

        public void setPageCount(int pageCount) {
            this.pageCount = pageCount;
        }

        public int getSize() {
            return size;
        }

        public void setSize(int size) {
            this.size = size;
        }

        public int getTotal() {
            return total;
        }

        public void setTotal(int total) {
            this.total = total;
        }

        public List<DatasBean> getDatas() {
            return datas;
        }

        public void setDatas(List<DatasBean> datas) {
            this.datas = datas;
        }

        public static class DatasBean {
    
            private String apkLink;
            private String author;
            private int chapterId;
            private String chapterName;
            private boolean collect;
            private int courseId;
            private String desc;
            private String envelopePic;
            private boolean fresh;
            private int id;
            private String link;
            private String niceDate;
            private String origin;
            private String prefix;
            private String projectLink;
            private long publishTime;
            private int superChapterId;
            private String superChapterName;
            private String title;
            private int type;
            private int userId;
            private int visible;
            private int zan;
            private List<?> tags;

            public String getApkLink() {
                return apkLink;
            }

            public void setApkLink(String apkLink) {
                this.apkLink = apkLink;
            }

            public String getAuthor() {
                return author;
            }

            public void setAuthor(String author) {
                this.author = author;
            }

            public int getChapterId() {
                return chapterId;
            }

            public void setChapterId(int chapterId) {
                this.chapterId = chapterId;
            }

            public String getChapterName() {
                return chapterName;
            }

            public void setChapterName(String chapterName) {
                this.chapterName = chapterName;
            }

            public boolean isCollect() {
                return collect;
            }

            public void setCollect(boolean collect) {
                this.collect = collect;
            }

            public int getCourseId() {
                return courseId;
            }

            public void setCourseId(int courseId) {
                this.courseId = courseId;
            }

            public String getDesc() {
                return desc;
            }

            public void setDesc(String desc) {
                this.desc = desc;
            }

            public String getEnvelopePic() {
                return envelopePic;
            }

            public void setEnvelopePic(String envelopePic) {
                this.envelopePic = envelopePic;
            }

            public boolean isFresh() {
                return fresh;
            }

            public void setFresh(boolean fresh) {
                this.fresh = fresh;
            }

            public int getId() {
                return id;
            }

            public void setId(int id) {
                this.id = id;
            }

            public String getLink() {
                return link;
            }

            public void setLink(String link) {
                this.link = link;
            }

            public String getNiceDate() {
                return niceDate;
            }

            public void setNiceDate(String niceDate) {
                this.niceDate = niceDate;
            }

            public String getOrigin() {
                return origin;
            }

            public void setOrigin(String origin) {
                this.origin = origin;
            }

            public String getPrefix() {
                return prefix;
            }

            public void setPrefix(String prefix) {
                this.prefix = prefix;
            }

            public String getProjectLink() {
                return projectLink;
            }

            public void setProjectLink(String projectLink) {
                this.projectLink = projectLink;
            }

            public long getPublishTime() {
                return publishTime;
            }

            public void setPublishTime(long publishTime) {
                this.publishTime = publishTime;
            }

            public int getSuperChapterId() {
                return superChapterId;
            }

            public void setSuperChapterId(int superChapterId) {
                this.superChapterId = superChapterId;
            }

            public String getSuperChapterName() {
                return superChapterName;
            }

            public void setSuperChapterName(String superChapterName) {
                this.superChapterName = superChapterName;
            }

            public String getTitle() {
                return title;
            }

            public void setTitle(String title) {
                this.title = title;
            }

            public int getType() {
                return type;
            }

            public void setType(int type) {
                this.type = type;
            }

            public int getUserId() {
                return userId;
            }

            public void setUserId(int userId) {
                this.userId = userId;
            }

            public int getVisible() {
                return visible;
            }

            public void setVisible(int visible) {
                this.visible = visible;
            }

            public int getZan() {
                return zan;
            }

            public void setZan(int zan) {
                this.zan = zan;
            }

            public List<?> getTags() {
                return tags;
            }

            public void setTags(List<?> tags) {
                this.tags = tags;
            }
        }
    }
}

2.3、adapter(ArticleAdapter.class)

public class ArticleAdapter extends BaseQuickAdapter<Article.DataBean.DatasBean, BaseViewHolder> {
    public ArticleAdapter(int layoutResId, @Nullable List<Article.DataBean.DatasBean> data) {
        super(layoutResId, data);
    }

    @Override
    protected void convert(@NonNull BaseViewHolder helper, Article.DataBean.DatasBean item) {
        if (item.getSuperChapterName().equals("公众号")) {
            helper.setText(R.id.newBowen_txt_label, item.getSuperChapterName()).setVisible(R.id.newBowen_txt_label, true);
        }
        if (TextUtils.isEmpty(item.getAuthor())){
            helper.setText(R.id.newBowen_txt_author, "佚名");
        }else {
            helper.setText(R.id.newBowen_txt_author, item.getAuthor());
        }

        helper.setText(R.id.newBowen_txt_detail, item.getTitle()).addOnClickListener(R.id.newBowen_img_more);
        helper.setText(R.id.newBowen_txt_superChapterName, item.getSuperChapterName());
        helper.setText(R.id.newBowen_txt_chapterName, item.getChapterName());
        helper.setText(R.id.newBowen_txt_time, item.getNiceDate());
    }

}

2.4、Fragment(BewBiwebFragment.java)

/**
 * 最新博文
 */
public class NewBowenFragment extends Fragment {
    @BindView(R.id.newBowen_recycle_list)
    RecyclerView newBowenRecycleList;
    @BindView(R.id.refreshLayout)
    SmartRefreshLayout refreshLayout;

    private View view;
    private ArrayList<String> imagePath;//轮播图图片集合
    private List<Carousel.DataBean> carouselList;
    private List<String> titles;
    private Banner banner;
    private List<Article.DataBean.DatasBean> articleList;
    private ArticleAdapter articleAdapter;
    private Loading loading = new Loading();
    private int page_size = 0;
    private Unbinder unbinder;
    private Boolean isOne = true;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        view = inflater.inflate(R.layout.fragment_newbowen, container, false);
        unbinder = ButterKnife.bind(this, view);
        articleList = new ArrayList<>();
        initView();
        return view;
    }



    /*
     *初始化页面
     */
    private void initView() {
        initItemView();
        getBannerData();
        getArticleData(page_size);
    }

    /**
     * 列表视图
     */

    //列表初始化
    private void initItemView() {
        newBowenRecycleList.setLayoutManager(new LinearLayoutManager(getContext()));
        articleAdapter = new ArticleAdapter(R.layout.item_newbowen, articleList);
        newBowenRecycleList.setAdapter(articleAdapter);
        itemClick();     //点击事件
        itemPull_refresh();    //上拉加载
        itemDrop_down();
        itemHeadView();//头部布局

    }

    //列表点击事件
    private void itemClick() {
        //单击事件
        articleAdapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(BaseQuickAdapter adapter, View view, int position) {
                Intent clickIntent = new Intent(getContext(), PageDetailActivity.class);
                clickIntent.putExtra("Url", articleList.get(position).getLink());
                clickIntent.putExtra("Title", articleList.get(position).getTitle());
                clickIntent.putExtra("NiceDate", articleList.get(position).getNiceDate());
                clickIntent.putExtra("ChapterName", articleList.get(position).getChapterName());
                clickIntent.putExtra("superChapterName", articleList.get(position).getSuperChapterName());
                clickIntent.putExtra("Author", articleList.get(position).getAuthor());
                startActivity(clickIntent);
            }
        });
        //点击更多显示菜单
        articleAdapter.setOnItemChildClickListener(new BaseQuickAdapter.OnItemChildClickListener() {
            @Override
            public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {
                ShowPopupMenu.showPopupMenu(view, getContext(), new PopupMenu.OnMenuItemClickListener() {
                    @Override
                    public boolean onMenuItemClick(MenuItem menuItem) {
                        switch (menuItem.getItemId()) {
                            case R.id.all_removeItem:
                                articleList.remove(position);
                                articleAdapter.notifyDataSetChanged();
                                break;
                            case R.id.all_waitRead:
                                WaitRead waitRead = new WaitRead();
                                waitRead.setAuthor(articleList.get(position).getAuthor());
                                waitRead.setChapterName(articleList.get(position).getChapterName());
                                waitRead.setNiceDate(articleList.get(position).getNiceDate());
                                waitRead.setSuperChapterName(articleList.get(position).getSuperChapterName());
                                waitRead.setTitle(articleList.get(position).getTitle());
                                waitRead.setUrl(articleList.get(position).getLink());
                                waitRead.save();
                                Toast.makeText(getContext(), "已加入稍后阅读", Toast.LENGTH_SHORT).show();
                            default:
                                break;
                        }
                        return false;
                    }
                });

            }
        });
    }

    //列表上拉加载更多
    private void itemPull_refresh() {
        articleAdapter.setOnLoadMoreListener(new BaseQuickAdapter.RequestLoadMoreListener() {
            @Override
            public void onLoadMoreRequested() {
                ++page_size;
                getArticleData(page_size);
            }
        }, newBowenRecycleList);
    }

    //列表下拉刷新
    private void itemDrop_down() {
        refreshLayout.setOnRefreshListener(new OnRefreshListener() {
            @Override
            public void onRefresh(@NonNull RefreshLayout refreshLayout) {
                articleList.clear();
                page_size=0;
                getArticleData(page_size);
                refreshLayout.finishRefresh(1500);
            }
        });
    }

    //添加头部布局
    private void itemHeadView() {
        View view = LayoutInflater.from(getContext()).inflate(R.layout.layout_index_banner, null);
        banner = view.findViewById(R.id.banner);
        articleAdapter.addHeaderView(view);
    }



    /**
     * 获取网络数据
     */

    //获取最新博文列表数据
    private List<Article.DataBean.DatasBean> getArticleData(int pageSize) {
        if (isOne) {
            loading.showProgressDialog(getContext());
            isOne = false;
        }
        Retrofit retrofit = RetrofitUtil.sendRequest(Api.allUrl);
        Api_Interface api_interface = retrofit.create(Api_Interface.class);
        retrofit2.Call<Article> call = api_interface.getArticleList(pageSize);
        call.enqueue(new retrofit2.Callback<Article>() {
            @Override
            public void onResponse(retrofit2.Call<Article> call, retrofit2.Response<Article> response) {
                if (response.isSuccessful()) {
                    Article data = response.body();
                    for (Article.DataBean.DatasBean articleData : data.getData().getDatas()) {
                        Article.DataBean.DatasBean article = new Article.DataBean.DatasBean();
                        article.setAuthor(articleData.getAuthor());
                        article.setChapterName(articleData.getChapterName());
                        article.setSuperChapterName(articleData.getSuperChapterName());
                        String title = articleData.getTitle()
                                .replace("&amp;", "")
                                .replace("&ldquo;", "")
                                .replace("&rdquo;", "")
                                .replace("&middot;", "")
                                .replace("&mdash;", "");
                        article.setTitle(title);
                        article.setNiceDate(articleData.getNiceDate());
                        article.setLink(articleData.getLink());
                        articleList.add(article);
                    }
                }
                Objects.requireNonNull(getActivity()).runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        loading.closeProgressDialog();
                        articleAdapter.setNewData(articleList);
                    }
                });
            }

            @Override
            public void onFailure(retrofit2.Call<Article> call, Throwable t) {
                Log.i("状态", "失败");
            }
        });
        return articleList;
    }

    //获取轮播图数据
    private void getBannerData() {
        Retrofit retrofit = RetrofitUtil.sendRequest(Api.allUrl);
        Api_Interface api_interface = retrofit.create(Api_Interface.class);
        retrofit2.Call<Carousel> call = api_interface.getCarouselList();
        imagePath = new ArrayList<>();//图片集合
        titles = new ArrayList<>();//标题集合
        carouselList = new ArrayList<>();
        call.enqueue(new retrofit2.Callback<Carousel>() {
            @Override
            public void onResponse(retrofit2.Call<Carousel> call, retrofit2.Response<Carousel> response) {
                if (response.isSuccessful()) {
                    Carousel carousel = response.body();
                    assert carousel != null;
                    for (Carousel.DataBean carouselData : carousel.getData()) {
                        Carousel.DataBean carouseBean = new Carousel.DataBean();
                        carouseBean.setImagePath(carouselData.getImagePath());
                        carouseBean.setDesc(carouselData.getDesc());
                        carouseBean.setTitle(carouselData.getTitle());
                        carouseBean.setUrl(carouselData.getUrl());
                        carouselList.add(carouseBean);
                        imagePath.add(carouselData.getImagePath());
                        titles.add(carouselData.getTitle());
                    }
                }
                getActivity().runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        BannerImg();
                    }
                });
            }

            @Override
            public void onFailure(retrofit2.Call<Carousel> call, Throwable t) {
                Log.i("状态", "失败");
            }
        });
    }

    /**
     * 其他
     */

    //fragment销毁回调方法
    @Override
    public void onDestroyView() {
        super.onDestroyView();
        unbinder.unbind();
    }


    //轮播图设置
    private void BannerImg() {
        //设置圆形指示器和标题
        banner.setBannerStyle(BannerConfig.CIRCLE_INDICATOR_TITLE_INSIDE);
        //设置图片加载器
        banner.setImageLoader(new GlideImageLoader()); //必要
        //设置图片集合
        banner.setImages(imagePath);
        //设置滑动特效
        banner.setBannerAnimation(Transformer.CubeOut);
        //设置标题
        banner.setBannerTitles(titles);
        //轮播时间
        banner.setDelayTime(3000);
        //设置点击事件
        banner.setOnBannerListener(new OnBannerListener() {
            @Override
            public void OnBannerClick(int position) {
                Intent intent = new Intent(getContext(), PageDetailActivity.class);
                intent.putExtra("Url", carouselList.get(position).getUrl());
                intent.putExtra("Title", carouselList.get(position).getTitle());
                startActivity(intent);
            }
        });
        //取消指示器
        //    Carousel.setBannerStyle(BannerConfig.NOT_INDICATOR);
        //banner设置方法全部调用完毕时最后调用
        banner.start();

    }
}