OkHttp请求_springview_recyclerview上拉刷新下拉加载

最新推荐文章于 2022-04-11 10:14:12 发布

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本文介绍了如何利用OkHttp库，在一个使用SpringView的RecyclerView应用中实现上拉刷新和下拉加载功能，详细阐述了相关步骤和技术要点。

主Activity

public class MainActivity extends Activity implements MultiIView {
    private MultilActivityPresenter presenter;
    private MultilActivityAdapter adapter;
    private RecyclerView recyclerview;
    private SpringView springview;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);
        recyclerview = findViewById(R.id.recyclerview);
        springview = findViewById(R.id.springview);

        presenter = new MultilActivityPresenter(this);


        adapter = new MultilActivityAdapter(this);

        LinearLayoutManager manager = new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false);

        recyclerview.setLayoutManager(manager);
        recyclerview.setAdapter(adapter);


        springview.setHeader(new DefaultHeader(this));
        springview.setFooter(new DefaultFooter(this));




        springview.setListener(new SpringView.OnFreshListener() {
            @Override
            public void onRefresh() {

                presenter.onRefresh(true);
            }

            @Override
            public void onLoadmore() {
                presenter.onRefresh(false);
            }
        });

        presenter.onRefresh(true);
    }

    @Override
    public void success(MultilBean bean) {
        if(springview != null){
            springview.onFinishFreshAndLoad();
        }
        adapter.addData(bean.getResult().getData());

    }

    @Override
    public void failure(Exception e) {
        Toast.makeText(this, " error ", Toast.LENGTH_SHORT).show();

    }
}

主布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.zhangyongbo.zkmnborther.MainActivity">
    <com.liaoinstan.springview.widget.SpringView
android:id="@+id/springview"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
    android:id="@+id/recyclerview"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

</android.support.v7.widget.RecyclerView>
</com.liaoinstan.springview.widget.SpringView>
</RelativeLayout>

View层

public interface MultiIView {

    public void success(MultilBean bean);
    public void failure(Exception e);

}

Presenter层
public class MultilActivityPresenter {

    private MultiIView view;
    private MultilActivityModule multilActivityModule ;

    public MultilActivityPresenter(MultiIView view){
        this.view = view;
        this.multilActivityModule = new MultilActivityModule();
    }
    /**
     * 下啦刷新
     */
    public void onRefresh(boolean up) {

        multilActivityModule.onRefresh(up, new MultilActivityModule.ModuleCallBack() {
            @Override
            public void success(MultilBean bean) {
                view.success(bean);
            }

            @Override
            public void failure(Exception e) {

                view.failure(e);
            }
        });


    }
}

Moudlec层
public class MultilActivityModule {

    /**
     *
     * up true 上啦 false 下啦
     */
    public void onRefresh(boolean up, final ModuleCallBack callBack) {


        OkhttpUtils.getInstance().asy(null, "http://v.juhe.cn/toutiao/index?type=top&key=597b4f9dcb50e051fd725a9ec54d6653", new AbstractUiCallBack<MultilBean>() {
            @Override
            public void success(MultilBean bean) {

                callBack.success(bean);
            }

            @Override
            public void failure(Exception e) {

                callBack.failure(e);
            }
        });


    }


    public  interface ModuleCallBack {
        public void success(MultilBean bean);
        public void failure(Exception bean);

    }

}
适配器

public class MultilActivityAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    private Context context;

    private List<MultilBean.ResultBean.DataBean> list ;

    public MultilActivityAdapter(Context context) {
        this.context = context;
    }
    public void addData(List<MultilBean.ResultBean.DataBean> list){

        if(this.list == null){
            this.list = new ArrayList<>();
        }
        this.list.addAll(list);
        notifyDataSetChanged();
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        if (viewType == 0) {
            View view1 = LayoutInflater.from(context).inflate(R.layout.item1, parent, false);
            return new ViewHolder1(view1);
        } else if (viewType == 1) {
            View view2 = LayoutInflater.from(context).inflate(R.layout.item2, parent, false);
            return new ViewHolder2(view2);

        } else {
            View view3 = LayoutInflater.from(context).inflate(R.layout.item3, parent, false);
            return new ViewHolder3(view3);

        }
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        if(holder instanceof ViewHolder1){
            ViewHolder1 holder1 =  (ViewHolder1)holder ;


            holder1.listItem1Textview.setText(list.get(position).getTitle());

            ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s(),holder1.listItem1Imageview);
        } else if(holder instanceof ViewHolder2){
            ViewHolder2 holder2 =  (ViewHolder2)holder ;
            holder2.listItem2Textview.setText(list.get(position).getTitle());

            ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s(),holder2.listItem2Imageview1);
            ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s02(),holder2.listItem2Imageview2);

        } else {
            ViewHolder3 holder3 =  (ViewHolder3)holder ;
            holder3.listItem3Textview.setText(list.get(position).getTitle());
            ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s(),holder3.listItem3Imageview1);
            ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s02(),holder3.listItem3Imageview2);
            ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s03(),holder3.listItem3Imageview3);

        }
    }
    @Override
    public int getItemViewType(int position) {

        if(!TextUtils.isEmpty(list.get(position).getThumbnail_pic_s03())){
            return 2;
        }else  if(!TextUtils.isEmpty(list.get(position).getThumbnail_pic_s02())){
            return 1;
        }else {
            return 0;

        }


    }
    @Override
    public int getItemCount() {
        return list == null ? 0 : list.size();
    }


    static class ViewHolder1 extends RecyclerView.ViewHolder {

        ImageView listItem1Imageview;

        TextView listItem1Textview;

        ViewHolder1(View view) {
            super(view);
            listItem1Imageview  =  view .findViewById(R.id.itme_view1);
            listItem1Textview = view .findViewById(R.id.itme_text1);
        }
    }

    static class ViewHolder2 extends RecyclerView.ViewHolder {
        TextView listItem2Textview;
        ImageView listItem2Imageview1;
        ImageView listItem2Imageview2;

        ViewHolder2(View view) {
            super(view);
            listItem2Textview  =  view .findViewById(R.id.itme_text2);
            listItem2Imageview1 = view .findViewById(R.id.itme_view2);
            listItem2Imageview2 = view .findViewById(R.id.itme_view_2);

        }
    }

    static class ViewHolder3  extends RecyclerView.ViewHolder{
        TextView listItem3Textview;
        ImageView listItem3Imageview1;
        ImageView listItem3Imageview2;
        ImageView listItem3Imageview3;
        ViewHolder3(View view) {
            super(view);
            listItem3Textview  =  view .findViewById(R.id.itme_text3);
            listItem3Imageview1 = view .findViewById(R.id.itme_view3);
            listItem3Imageview2 = view .findViewById(R.id.itme_view_3);
            listItem3Imageview3 = view .findViewById(R.id.itme_views3);
        }
    }
}

拦截器
public class LoggingInterceptor implements Interceptor {
  @Override public Response intercept(Chain chain) throws IOException {
    Request request = chain.request();

    long t1 = System.nanoTime();

    Response response = chain.proceed(request);

    long t2 = System.nanoTime();

    System.out.println("t2 = " + (t2-t1));
    return response;
  }
}
这是多条目用到的布局文件
第一个
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
     <ImageView
         android:id="@+id/itme_view1"
         android:layout_width="120dp"
         android:layout_height="120dp" />
    <TextView
        android:id="@+id/itme_text1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

第二个
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
     <ImageView
         android:id="@+id/itme_view_2"
         android:layout_width="120dp"
         android:layout_height="120dp" />
    <ImageView
        android:id="@+id/itme_view2"
        android:layout_width="120dp"
        android:layout_height="120dp" />
    <TextView
        android:id="@+id/itme_text2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>
第三个
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
     <ImageView
         android:id="@+id/itme_view_3"
         android:layout_width="120dp"
         android:layout_height="120dp" />
    <ImageView
        android:id="@+id/itme_view3"
        android:layout_width="120dp"
        android:layout_height="120dp" />
    <ImageView
        android:id="@+id/itme_views3"
        android:layout_width="120dp"
        android:layout_height="120dp" />
    <TextView
        android:id="@+id/itme_text3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>


温馨提示:记得导依赖,下面是依赖
compile 'com.android.support:appcompat-v7:26.0.0-alpha1'
compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'
compile 'com.liaoinstan.springview:library:1.2.6'
compile files('libs/gson-2.2.4.jar')
compile 'com.jakewharton:butterknife:8.1.0'
compile 'com.squareup.okhttp3:okhttp:3.2.0'
compile 'com.squareup.okio:okio:1.7.0'
compile 'com.squareup.okhttp3:logging-interceptor:3.2.0'
用ImageLoade记得导架包和配置文件和去清单文件配置,如果用butterknife报空指针那就自己去findViewById