mvp okhttp3,网络请求

最新推荐文章于 2019-01-01 20:47:47 发布

原创最新推荐文章于 2019-01-01 20:47:47 发布 · 296 阅读

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CC 4.0 BY-SA版权

本文介绍了一个基于MVP模式的应用案例，通过使用OkHttp进行网络请求，并结合Gson解析JSON数据，最终将数据展示在RecyclerView中。文章详细描述了从依赖添加到视图展示的整个流程。

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==============================添加依赖=================================

compile 'com.squareup.okhttp3:okhttp:3.9.0'

compile 'com.squareup.okhttp3:logging-interceptor:3.9.0'

compile 'com.squareup.okio:okio:1.5.0'
compile 'com.android.support:recyclerview-v7:24.2.1'
compile 'com.github.bumptech.glide:glide:4.0.0'
compile 'com.google.code.gson:gson:2.8.2'


======================contract=============================


package com.exbawei.liteli.mvpokhttp.contract;

import com.exbawei.liteli.mvpokhttp.bean.Bean;

import java.util.List;

/**
 * Created by li te li on 2017/10/25.
 */

public class Contract {
    public interface Imodel{
        //获取 集合的 传值
 List<Bean.DataBean> getData();
    }
    public interface Iview{
        //得到接口的数据
void  setData(List<Bean.DataBean> list);
    }
    public interface Ipresenter{
        //显示数据
  void showData();
    }
}


===================model===================

package com.exbawei.liteli.mvpokhttp.model;

import com.exbawei.liteli.mvpokhttp.bean.Bean;
import com.exbawei.liteli.mvpokhttp.contract.Contract;
import com.exbawei.liteli.mvpokhttp.utils.GsonObjectCallback;
import com.exbawei.liteli.mvpokhttp.utils.OkHttp3Utils;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import okhttp3.Call;

/**
 * Created by li te li on 2017/10/25.
 */

public class Model implements Contract.Imodel {
    String url = "http://www.yulin520.com/a2a/impressApi/news/mergeList?sign=C7548DE604BCB8A17592EFB9006F9265&pageSize=20&gender=2&ts=1871746850&page=1";
List<Bean.DataBean> list = new ArrayList<>();
    @Override
    public List<Bean.DataBean> getData() {
        OkHttp3Utils.doGet(url, new GsonObjectCallback<Bean>() {
            @Override
            public void onUi(Bean bean) {
                list.addAll(bean.getData());

            }

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

            }
        });
        return list;
    }
}



=======================presenter============================

package com.exbawei.liteli.mvpokhttp.presenter;

import com.exbawei.liteli.mvpokhttp.bean.Bean;
import com.exbawei.liteli.mvpokhttp.contract.Contract;
import com.exbawei.liteli.mvpokhttp.model.Model;

import java.util.List;

/**
 * Created by li te li on 2017/10/25.
 */

public class Presenter implements Contract.Ipresenter {
 Contract.Iview iview;
    Model model;

    public Presenter(Contract.Iview iview) {
        this.iview = iview;
        model=new Model();
    }

    @Override
    public void showData() {
        List<Bean.DataBean> data = model.getData();
        iview.setData(data);
    }
}

====================View============

package com.exbawei.liteli.mvpokhttp;

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

import com.exbawei.liteli.mvpokhttp.bean.Bean;
import com.exbawei.liteli.mvpokhttp.contract.Contract;
import com.exbawei.liteli.mvpokhttp.presenter.Presenter;

import java.util.List;

public class MainActivity extends AppCompatActivity implements Contract.Iview{
Presenter presenter = new Presenter(this);
    private RecyclerView rv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        rv = (RecyclerView) findViewById(R.id.rv);
        RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this);
        rv.setLayoutManager(layoutManager);
        presenter.showData();
    }

    @Override
    public void setData(List<Bean.DataBean> list) {
       Myadapter myadapter = new Myadapter(list,MainActivity.this);
        rv.setAdapter(myadapter);
    }
}
==========================adapter=================

package com.exbawei.liteli.mvpokhttp;

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

import com.bumptech.glide.Glide;
import com.exbawei.liteli.mvpokhttp.bean.Bean;

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

/**
 * Created by li te li on 2017/10/25.
 */

public class Myadapter extends RecyclerView.Adapter<Myadapter.ViewHolder> {
    List<Bean.DataBean>list = new ArrayList<>();
    Context context;

    public Myadapter(List<Bean.DataBean> list, Context context) {
        this.list = list;
        this.context = context;
    }


    @Override
    public Myadapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
          View view =View.inflate(context,R.layout.item,null);
        ViewHolder viewHolder=new ViewHolder(view);

        return viewHolder;
    }

    @Override
    public void onBindViewHolder(Myadapter.ViewHolder holder, int position) {
         holder.tv.setText(list.get(position).getIntroduction());
        Glide.with(context).load(list.get(position).getImg()).into(holder.iv);
    }

    @Override
    public int getItemCount() {
        return list.size();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
        ImageView iv;
        TextView tv;
        public ViewHolder(View itemView) {
            super(itemView);
             iv= (ImageView) itemView.findViewById(R.id.iv);
             tv= (TextView) itemView.findViewById(R.id.tv);
        }
    }
}