MVP okhttp+springview+RecyclerView 上拉下拉功能+多条目加载

于 2017-11-10 20:39:04 发布
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CC 4.0 BY-SA版权
分类专栏： Android MVP
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
本文链接：https://blog.youkuaiyun.com/qq_40143811/article/details/78503046
本文介绍了一个使用OkHttp进行网络请求并结合RecyclerView展示数据的安卓应用案例。文章详细描述了如何配置依赖、实现数据加载及适配不同类型的列表项。

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这个工程所需要的依赖
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:26.0.0-alpha1'
    testCompile 'junit:junit:4.12'
    compile 'com.squareup.okhttp3:okhttp:3.9.0'
    compile 'com.github.liuguangqiang.SuperRecyclerView:super-recyclerview:0.1.2'
    compile 'com.jakewharton:butterknife:8.8.1'
    compile 'com.jakewharton:butterknife-compiler:8.8.1'
    compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
    compile 'com.liaoinstan.springview:library:1.2.6'
    compile files('libs/gson-2.3.1.jar')
}


----------------------------------清单目录--------------------------------

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="app.com.okhttp">

    <uses-permission android:name="android.permission.INTERNET" />
    <application

        android:name=".MyApp"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>



---------------------------------------布局页面----------------------------------------------

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="app.com.okhttp.MainActivity">

    <com.liaoinstan.springview.widget.SpringView
        android:id="@+id/springview"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <com.liuguangqiang.recyclerview.widget.SuperRecyclerView
            android:id="@+id/recyclerview"
            android:layout_width="match_parent"
            android:layout_height="match_parent"></com.liuguangqiang.recyclerview.widget.SuperRecyclerView>
    </com.liaoinstan.springview.widget.SpringView>

</RelativeLayout>


item1.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:orientation="vertical">

    <TextView
        android:id="@+id/list_item1_textview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="1111111" />

    <ImageView
        android:id="@+id/list_item1_imageview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@mipmap/ic_launcher" />
</LinearLayout>



item2.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:orientation="vertical">

    <TextView
        android:id="@+id/list_item2_textview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="2222222222" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <ImageView
            android:id="@+id/list_item2_imageview1"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:src="@mipmap/ic_launcher" />

        <ImageView
            android:id="@+id/list_item2_imageview2"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:src="@mipmap/ic_launcher" />
    </LinearLayout>
</LinearLayout>


item3.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:orientation="vertical">

    <TextView
        android:id="@+id/list_item3_textview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="2222222222" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <ImageView
            android:id="@+id/list_item3_imageview1"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:src="@mipmap/ic_launcher" />

        <ImageView
            android:id="@+id/list_item3_imageview2"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:src="@mipmap/ic_launcher" />

        <ImageView
            android:id="@+id/list_item3_imageview3"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:src="@mipmap/ic_launcher" />
    </LinearLayout>
</LinearLayout>



--------------------------------------主页面-------------------------------------

module包 MultilActivityModule.java

package app.com.okhttp.module;


import app.com.okhttp.MultiBean;
import app.com.okhttp.okhttp.AbstractUiCallBack;
import app.com.okhttp.okhttp.OkhttpUtils;

/**
 * Created by muhanxi on 17/11/10.
 */

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<MultiBean>() {
            @Override
            public void success(MultiBean bean) {

                callBack.success(bean);
            }

            @Override
            public void failure(Exception e) {

                callBack.failure(e);
            }
        });


    }


    public interface ModuleCallBack {
        public void success(MultiBean bean);

        public void failure(Exception bean);

    }


}



okhttp包         AbstractUiCallBack.java

package app.com.okhttp.okhttp;

import android.os.Handler;
import android.os.Looper;

import com.google.gson.Gson;
import com.google.gson.JsonSyntaxException;

import java.io.IOException;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;

/**
 * Created by muhanxi on 17/11/10.
 * <p>
 * * Okhttp 单例 范型的封装
 */

public abstract class AbstractUiCallBack<T> implements Callback {

    /**
     * 成功回调
     *
     * @param t
     */
    public abstract void success(T t);

    /**
     * 失败回调
     *
     * @param e
     */
    public abstract void failure(Exception e);


    private Handler handler = null;
    private Class clazz;

    public AbstractUiCallBack() {
        handler = new Handler(Looper.getMainLooper());


        //  得到的是一个 AbstractUiCallBack<T> 的Type
        Type type = getClass().getGenericSuperclass();

        // 得到的是T的实际Type
        Type[] arr = ((ParameterizedType) type).getActualTypeArguments();

        clazz = (Class) arr[0];


    }


    @Override
    public void onFailure(Call call, IOException e) {

        failure(e);

    }

    @Override
    public void onResponse(Call call, Response response) throws IOException {


        try {
            String result = response.body().string();
            System.out.println("result = " + result);
            Gson gson = new Gson();

            final T t = (T) gson.fromJson(result, clazz);

            handler.post(new Runnable() {
                @Override
                public void run() {
                    success(t);
                }
            });
        } catch (IOException e) {
            e.printStackTrace();
            failure(e);
        } catch (JsonSyntaxException e) {
            e.printStackTrace();
            failure(e);
        }


    }
}



okhttp包            OkhttpUtils.java

package app.com.okhttp.okhttp;

import java.io.File;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import app.com.okhttp.LoggingInterceptor;
import okhttp3.FormBody;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;

/**
 * Created by muhanxi on 17/11/10.
 *
 *
 * Okhttp 单例 范型的封装
 */

public class OkhttpUtils {






    private static OkhttpUtils okhttpUtils = null ;

    private OkhttpUtils(){

    }

    public static OkhttpUtils getInstance(){

        if(okhttpUtils == null){
            okhttpUtils = new OkhttpUtils();
            client = new OkHttpClient.Builder()
                    .readTimeout(20, TimeUnit.SECONDS)
                    .writeTimeout(20,TimeUnit.SECONDS)
                    .connectTimeout(20,TimeUnit.SECONDS)
                    .addInterceptor(new LoggingInterceptor())
                    .build();
        }
        return okhttpUtils ;

    }


    private static OkHttpClient client ;


    public void asy(Map<String,String> params,String url,AbstractUiCallBack callBack){
        Request request = null ;

        if(params != null){
            FormBody.Builder builder = new FormBody.Builder() ;
            for(Map.Entry<String,String> entry : params.entrySet()){
                builder.add(entry.getKey(),entry.getValue());
            }
            FormBody body =  builder.build();
            request = new Request.Builder()
                    .url(url)
                    .post(body)
                    .build();
        } else {
            request = new Request.Builder()
                    .url(url)
                    .build();
        }



        client.newCall(request).enqueue(callBack);

    }

    private static final MediaType MEDIA_TYPE_PNG = MediaType.parse("image/png");


    public static void postFile(Map<String,String> map, String url, File file,AbstractUiCallBack callBack){

        String [] array =  file.getAbsolutePath().split("\\/");

        MultipartBody.Builder builder = new MultipartBody.Builder();
        builder.setType(MultipartBody.FORM);

        for(Map.Entry<String,String> entry : map.entrySet()){
            builder.addFormDataPart(entry.getKey(),entry.getValue());
        }
        builder.addFormDataPart("imageFileName",array[array.length-1]);


        if(file.exists() && file.length() > 0){
            builder.addFormDataPart("image",array[array.length-1], RequestBody.create(MEDIA_TYPE_PNG,file));
        }
        MultipartBody body =  builder.build() ;

        Request request = new Request.Builder()
                .url(url)
                .post(body)
                .build();
        client.newCall(request).enqueue(callBack);


    }


}


presenter包 MultilActivityPresenter.java

package app.com.okhttp.presenter;

import app.com.okhttp.MainActivity;
import app.com.okhttp.MultiBean;
import app.com.okhttp.MultiIView;
import app.com.okhttp.module.MultilActivityModule;

/**
 * Created by muhanxi on 17/11/10.
 */

public class MultilActivityPresenter {


    private MultiIView view;
    private MultilActivityModule multilActivityModule;

    public MultilActivityPresenter(MainActivity 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(MultiBean bean) {
                view.success(bean);
            }

            @Override
            public void failure(Exception e) {

                view.failure(e);
            }
        });


    }


}



LoggingInterceptor.java

package app.com.okhttp;

import java.io.IOException;

import okhttp3.Interceptor;
import okhttp3.Request;
import okhttp3.Response;

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

    long t1 = System.nanoTime();
//    logger.info(String.format("Sending request %s on %s%n%s",
//        request.url(), chain.connection(), request.headers()));

    Response response = chain.proceed(request);

    long t2 = System.nanoTime();
//    logger.info(String.format("Received response for %s in %.1fms%n%s",
//        response.request().url(), (t2 - t1) / 1e6d, response.headers()));

    System.out.println("t2 = " + (t2-t1));
    return response;
  }
}



MainActivity.java

package app.com.okhttp;

import android.app.Activity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.Toast;

import com.liaoinstan.springview.container.DefaultFooter;
import com.liaoinstan.springview.container.DefaultHeader;
import com.liaoinstan.springview.widget.SpringView;

import app.com.okhttp.presenter.MultilActivityPresenter;
import butterknife.BindView;
import butterknife.ButterKnife;

public class MainActivity extends Activity implements MultiIView {

    @BindView(R.id.recyclerview)
    RecyclerView recyclerview;
    @BindView(R.id.springview)
    SpringView springview;
    private MultilActivityPresenter presenter;
    private MultilActivityAdapter adapter;

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


        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(MultiBean bean) {

        if (springview != null) {
            springview.onFinishFreshAndLoad();
        }
        adapter.addData(bean.getResult().getData());


    }

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

    }
}


MultiBean.java

这里是一个封装类,根据接口内容,自己封装



MultiIView.java

package app.com.okhttp;

/**
 * Created by muhanxi on 17/11/10.
 */

public interface MultiIView {


    public void success(MultiBean bean);

    public void failure(Exception e);


}



MultilActivityAdapter.java

package app.com.okhttp;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;


import com.nostra13.universalimageloader.core.ImageLoader;

import java.util.ArrayList;
import java.util.List;

import butterknife.BindView;
import butterknife.ButterKnife;

/**
 * Created by muhanxi on 17/11/10.
 */

public class MultilActivityAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {


    private Context context;

    private List<MultiBean.ResultBean.DataBean> list ;

    public MultilActivityAdapter(Context context) {

        this.context = context;
    }


    public void addData(List<MultiBean.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 {
        @BindView(R.id.list_item1_imageview)
        ImageView listItem1Imageview;
        @BindView(R.id.list_item1_textview)
        TextView listItem1Textview;

        ViewHolder1(View view) {
            super(view);
            ButterKnife.bind(this, view);
        }
    }

    static class ViewHolder2 extends RecyclerView.ViewHolder {
        @BindView(R.id.list_item2_textview)
        TextView listItem2Textview;
        @BindView(R.id.list_item2_imageview1)
        ImageView listItem2Imageview1;
        @BindView(R.id.list_item2_imageview2)
        ImageView listItem2Imageview2;

        ViewHolder2(View view) {
            super(view);
            ButterKnife.bind(this, view);
        }
    }

    static class ViewHolder3  extends RecyclerView.ViewHolder{
        @BindView(R.id.list_item3_textview)
        TextView listItem3Textview;
        @BindView(R.id.list_item3_imageview1)
        ImageView listItem3Imageview1;
        @BindView(R.id.list_item3_imageview2)
        ImageView listItem3Imageview2;
        @BindView(R.id.list_item3_imageview3)
        ImageView listItem3Imageview3;

        ViewHolder3(View view) {
            super(view);
            ButterKnife.bind(this, view);
        }
    }
}




MyApp.java

package app.com.okhttp;

import android.app.Application;

import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;

/**
 * Created by lenovo on 2017/11/10.
 */

public class MyApp extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        ImageLoaderConfiguration aDefault = ImageLoaderConfiguration.createDefault(getApplicationContext());
        ImageLoader.getInstance().init(aDefault);
    }
}
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