使用XRecyclerview刷新&加载更多

浅浅的花香味﹌ 2022-06-05 00:11 200阅读 0赞

##  ##

## XRecyclerView一个实现了下拉刷新，滚动到底部加载更多以及添加header功能的的RecyclerView。使用方式和RecyclerView完全一致，不需要额外的layout，不需要写特殊的adater。 加载效果内置了AVLoadingIndicatorView上的所有效果，可以根据需要指定。 ##

## 效果图 : ##

![20171112205557854][]

##  1.依赖: ##

//    android-async-http
        compile 'com.loopj.android:android-async-http:1.4.9'
    
        //fresco
        compile 'com.facebook.fresco:fresco:0.14.1'
    //    logger日志的使用
        compile 'com.orhanobut:logger:2.1.1'
    /*xRecyclerview*/
        compile 'com.jcodecraeer:xrecyclerview:1.3.2'
        //    retrofit2
        compile 'com.squareup.retrofit2:retrofit:2.0.1'
        compile 'com.squareup.retrofit2:converter-gson:2.0.1'
        compile 'com.squareup.retrofit2:adapter-rxjava:2.0.1'
        compile 'io.reactivex:rxandroid:1.1.0'
        compile 'com.squareup.okhttp3:logging-interceptor:3.4.1'

## 2.权限: ##

<uses-permission android:name="android.permission.INTERNET"/>
        <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
        <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

## 3.项目结构及布局文件: ##

![20171112205325692][]

## 布局文件: ##

activity\_main.xml

item.xml

## 4.Iview接口: ##

public interface Iview {
        //得到请求的数据
        void getJsonData(List<SuperBean> list);
    }

## 5.utils包: ##

###### API类: ######

public class API {
    
        public static final String API_URL="http://mnews.gw.com.cn/";
    }

###### ApiService接口: ######

public interface ApiService {
        //http://mnews.gw.com.cn/wap/data/news/xbsjxw/page_1.json
    
    
        @GET("wap/data/news/txs/page_{page}.json")
         Observable<List<SuperBean>> postPage(@Path("page") String page);
    
    
    }

###### DividerItemDecoration分割线类: ######

import android.content.Context;
    import android.content.res.TypedArray;
    import android.graphics.Canvas;
    import android.graphics.Rect;
    import android.graphics.drawable.Drawable;
    import android.support.v7.widget.LinearLayoutManager;
    import android.support.v7.widget.RecyclerView;
    import android.view.View;
    
    
    public class DividerItemDecoration extends RecyclerView.ItemDecoration{
        private static final int[] ATTRS = new int[]{
                android.R.attr.listDivider
        };
    
        public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL;
    
        public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL;
    
        private Drawable mDivider;
    
        private int mOrientation;
    
        public DividerItemDecoration(Context context, int orientation) {
            final TypedArray a = context.obtainStyledAttributes(ATTRS);
            mDivider = a.getDrawable(0);
            a.recycle();
            setOrientation(orientation);
        }
    
        public void setOrientation(int orientation) {
            if(orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST){
                throw new IllegalArgumentException("invalid orientation");
            }
            mOrientation=orientation;
        }
    
        /*划线*/
        @Override
        public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
    //        Log.v("main", "onDraw()..");
            if (mOrientation == VERTICAL_LIST) {
                drawVertical(c, parent);
            } else {
                drawHorizontal(c, parent);
            }
        }
    
        private void drawVertical(Canvas c, RecyclerView parent) {
            final int left = parent.getPaddingLeft();
            final int right = parent.getWidth() - parent.getPaddingRight();
    
            final int childCount = parent.getChildCount();
            for (int i = 0; i < childCount; i++) {
                final View child = parent.getChildAt(i);
                RecyclerView v = new RecyclerView(parent.getContext());
                final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                        .getLayoutParams();
                final int top = child.getBottom() + params.bottomMargin;
                final int bottom = top + mDivider.getIntrinsicHeight();
                mDivider.setBounds(left, top, right, bottom);
                mDivider.draw(c);
            }
        }
        private void drawHorizontal(Canvas c, RecyclerView parent) {
            final int top = parent.getPaddingTop();
            final int bottom = parent.getHeight() - parent.getPaddingBottom();
    
            final int childCount = parent.getChildCount();
            for (int i = 0; i < childCount; i++) {
                final View child = parent.getChildAt(i);
                final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                        .getLayoutParams();
                final int left = child.getRight() + params.rightMargin;
                final int right = left + mDivider.getIntrinsicHeight();
                mDivider.setBounds(left, top, right, bottom);
                mDivider.draw(c);
            }
        }
    
        @Override
        public void getItemOffsets(Rect outRect, int itemPosition, RecyclerView parent) {
            if (mOrientation == VERTICAL_LIST) {
                outRect.set(0, 0, 0, mDivider.getIntrinsicHeight());
            } else {
                outRect.set(0, 0, mDivider.getIntrinsicWidth(), 0);
            }
        }
    }

###### MyApp类： ######

public class MyApp extends Application{
    
        @Override
        public void onCreate() {
            super.onCreate();
            //初始化fresco
            Fresco.initialize(this);
        }
    }

## 6.Model包: ##

###### Imodel接口: ######

public interface Imodel {
    //请求数据
        void getHttpData(String url,String page,int type);
    
    }

###### HttpModel实现类: ######

import com.orhanobut.logger.Logger;
    import java.util.List;
    import retrofit2.Retrofit;
    import retrofit2.adapter.rxjava.RxJavaCallAdapterFactory;
    import retrofit2.converter.gson.GsonConverterFactory;
    import rx.Observable;
    import rx.Observer;
    import rx.android.schedulers.AndroidSchedulers;
    import rx.schedulers.Schedulers;
    import utils.ApiService;
    
    
    public class HttpModel implements Imodel{
    
        public static final String TAG="HttpModel";
        private OnFinish onFinish;
        //接口
        public interface OnFinish{
            void OnFinishListener(List<SuperBean> list);
        }
    
        public void setOnFinish(OnFinish finish){
            this.onFinish=finish;
        }
    
        @Override
        public void getHttpData(String url,String page,int type) {
            postGetData(url,page,type);
        }
        //网络请求
        private void postGetData(String url, String page, final int type) {
            Retrofit retrofit = new Retrofit.Builder()
                    .baseUrl(url)
                    .addConverterFactory(GsonConverterFactory.create())
                    .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
                    .build();
            //动态代理得到网络接口
            ApiService apiService = retrofit.create(ApiService.class);
    
            Observable<List<SuperBean>> listObservable = apiService.postPage(page);
                listObservable.subscribeOn(Schedulers.io())
                    .observeOn(AndroidSchedulers.mainThread())
                    .subscribe(new Observer<List<SuperBean>>() {
                        @Override
                        public void onCompleted() {
                            Logger.d("onCompleted==========");
                        }
    
                        @Override
                        public void onError(Throwable e) {
                            Logger.d("onError============");
                        }
    
                        @Override
                        public void onNext(List<SuperBean> superBeen) {
                             onFinish.OnFinishListener(superBeen);
                        }
                    });
        }
    }

###### ItemClickLitener 点击接口: ######

public interface ItemClickLitener {
    
        void onItemClick(View view, int position);
    
        void onItemLongClick(View view, int position);
    
        //    Item 内部View点击
        public void onItemSubViewClick(View view, int postion);
    
    }

MyRecyclerAdapter适配器:

public class MyRecyclerAdapter extends XRecyclerView.Adapter<MyRecyclerAdapter.ViewHolder>{
    
        private Context context;
        private List<SuperBean.DataBean> list;
    
        private ItemClickLitener mItemClickListener;
        public void setItemClickListener(ItemClickLitener mItemClickListener) {
            this.mItemClickListener = mItemClickListener;
    
        }
    
        public MyRecyclerAdapter(Context context, List<SuperBean.DataBean> list) {
            this.context = context;
            this.list = list;
        }
    
        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View view = LayoutInflater.from(context).inflate(R.layout.item, parent, false);
            ViewHolder viewholder = new ViewHolder(view);
            return viewholder;
        }
    
        @Override
        public void onBindViewHolder(ViewHolder holder, int position) {
            holder.time.setText(list.get(position).getOtime());
            holder.title.setText(list.get(position).getTitle());
    
            Uri uri = Uri.parse(list.get(position).getImg());
            holder.img.setImageURI(uri);
    
        }
    
        @Override
        public int getItemCount() {
            return list.size();
        }
    
        public class ViewHolder extends RecyclerView.ViewHolder {
    
    
            public SimpleDraweeView img;
            public TextView title;
            public TextView time;
    
            public ViewHolder(final View view) {
                super(view);
                img = (SimpleDraweeView) view.findViewById(R.id.img);
                title = (TextView) view.findViewById(R.id.title);
                time = (TextView) view.findViewById(R.id.time);
    
                //为item添加普通点击回调
                view.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        if (null != mItemClickListener) {
                            mItemClickListener.onItemClick(view, getPosition());
                        }
                    }
                });
    
                    /* 长按回调*/
                view.setOnLongClickListener(new View.OnLongClickListener() {
                    @Override
                    public boolean onLongClick(View v) {
                        if (null != mItemClickListener) {
                            mItemClickListener.onItemLongClick(view, getPosition());
                        }
                    return true;
                    }
                });
            }
        }
    
    }

实体类自己写哈

## 8.presenter包 ##

HttpPresenter类:

public class HttpPresenter implements HttpModel.OnFinish{
    
        public static final String TAG="HttpPresenter";
    
        private final Iview iview;
        private final HttpModel httpModel;
        private List<SuperBean> beanlist;
    
        public HttpPresenter(Iview iview) {
            this.iview = iview;
            this.httpModel = new HttpModel();
            httpModel.setOnFinish(this);
        }
    
        public void setDataJson(String url,String page,int type){
            Log.d(TAG, "setDataJson: 类型"+type+"=========="+page+"页");
            httpModel.getHttpData(url,page,type);
        }
    
    
    
        //完成网络请求
        @Override
        public void OnFinishListener(List<SuperBean> list) {
            iview.getJsonData(list);
        }
    }

## 9.最后是：MainActivity类： ##

import android.app.ProgressDialog;
    import android.content.DialogInterface;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.support.v7.widget.LinearLayoutManager;
    import android.util.Log;
    import android.view.View;
    import android.widget.Toast;
    
    import com.jcodecraeer.xrecyclerview.XRecyclerView;
    
    import java.util.ArrayList;
    import java.util.List;
    
    import model.ItemClickLitener;
    import model.MyRecyclerAdapter;
    import model.SuperBean;
    import presenter.HttpPresenter;
    import utils.API;
    import utils.DividerItemDecoration;
    import view.Iview;
    
    public class MainActivity extends AppCompatActivity implements Iview{
    
        public static final String TAG ="main";
        private XRecyclerView xRecyclerview;
        private MyRecyclerAdapter myRecyclerAdapter;
        int page=0;//page页
        private HttpPresenter httpPresenter;
    
        private List<SuperBean.DataBean> superList;
        private ProgressDialog progressDlg;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            initView();
        }
    
    
        private void initView() {
    
            xRecyclerview = (XRecyclerView) findViewById(R.id.xrecyclerview);
    
            //允许刷新，加载更多
            xRecyclerview.setPullRefreshEnabled(true);
            xRecyclerview.setLoadingMoreEnabled(true);
            //线性布局
            xRecyclerview.setLayoutManager(new LinearLayoutManager(this));
            //分割线
            xRecyclerview.addItemDecoration(new DividerItemDecoration(MainActivity.this,DividerItemDecoration.VERTICAL_LIST));
    
            //头部刷新样式
    //        xRecyclerview.setRefreshProgressStyle(1);
            //加载更多样式
    //        xRecyclerview.setLoadingMoreProgressStyle(22);
            //实例化
            httpPresenter = new HttpPresenter(this);
            httpPresenter.setDataJson(API.API_URL,"1",0);
    
        }
    
        @Override
        public void getJsonData(final List<SuperBean> list) {
            superList = new ArrayList<>();
            superList.addAll(list.get(0).getData());
    
            myRecyclerAdapter = new MyRecyclerAdapter(MainActivity.this, superList);
            xRecyclerview.setAdapter(myRecyclerAdapter);
    
            //0代表刷新，1代表加载更多
            xRecyclerview.setLoadingListener(new XRecyclerView.LoadingListener() {
                @Override
                public void onRefresh() {
                    Toast.makeText(MainActivity.this,"刷新...."+page, Toast.LENGTH_SHORT).show();
                    page=1;
                    httpPresenter.setDataJson(API.API_URL,page+"",0);
                    xRecyclerview.refreshComplete();
                }
    
                @Override
                public void onLoadMore() {
                    Toast.makeText(MainActivity.this,"加载更多...."+page,Toast.LENGTH_SHORT).show();
                    page++;
                    Log.d(TAG, "onLoadMore: 加载更多页数"+page);
                    httpPresenter.setDataJson(API.API_URL,page+"",1);
    //
                    xRecyclerview.loadMoreComplete();
                }
    
            });
    
            Log.d(TAG, "Main 集合"+ superList.size()+"----------"+superList.get(0).getTitle());
    
           //条目点击事件
            myRecyclerAdapter.setItemClickListener(new ItemClickLitener() {
                @Override
                public void onItemClick(View view, int position) {
                    Toast.makeText(MainActivity.this,"点击了条目"+position,Toast.LENGTH_SHORT).show();
    
                    progressDlg = new ProgressDialog(
                            MainActivity.this);
                    progressDlg.setTitle("进度对话框测试");
                    progressDlg.setMessage("下载图片");
                    progressDlg.setIcon(R.mipmap.ic_launcher);
                    progressDlg.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);// 设置水平进度条
                    progressDlg.setCancelable(true);// 设置是否可以通过点击Back键取消
                    progressDlg.setButton(DialogInterface.BUTTON_POSITIVE, "确认", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            if(which == DialogInterface.BUTTON_POSITIVE){
                                System.out.println("Click negative");
                            }
                        }
                    });
                    progressDlg.show();
    
                    new Thread(new Runnable() {
    
                        @Override
                        public void run() {
                            // TODO Auto-generated method stub
                            int i = 0;
                            while (i < 100) {
                                try {
                                    Thread.sleep(200);
                                    // 更新进度条的进度,可以在子线程中更新进度条进度
                                    progressDlg.incrementProgressBy(1);
                                    // dialog.incrementSecondaryProgressBy(10)//二级进度条更新方式
                                    i+=3;
    
                                } catch (Exception e) {
                                    // TODO: handle exception
                                }
                            }
                            // 在进度条走完时删除Dialog
                            progressDlg.dismiss();
                        }
                    }).start();
    
                }
                //条目长按事件
                @Override
                public void onItemLongClick(View view, int position) {
                    Toast.makeText(MainActivity.this,"长按了条目"+position,Toast.LENGTH_SHORT).show();
                }
    
                @Override
                public void onItemSubViewClick(View view, int postion) {
    
                }
            });
    
    
        }
    
    }

以上就是全部的东西了

[20171112205557854]: /images/20220605/8c1adf319a7b4eb8b41996f69eb0c0b5.png
[20171112205325692]: /images/20220605/cb02f3ed662541e89b9f96df95d108a6.png