recyclerview网络获取图片展示瀑布流MVP

activity_main布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout 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"    android:orientation="vertical"    tools:context="com.example.myapplication.MainActivity">    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/btn"        /><android.support.v7.widget.RecyclerView    android:layout_width="match_parent"    android:layout_height="match_parent"    android:id="@+id/recyclerview"></android.support.v7.widget.RecyclerView></LinearLayout>

MainActivity主类

package com.example.myapplication;import android.content.Intent;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.StaggeredGridLayoutManager;import android.view.View;import android.widget.Button;import android.widget.LinearLayout;import com.example.myapplication.adapter.RecyclerviewAdapter;import com.example.myapplication.bean.NewBean;import com.example.myapplication.presenter.RecyclerviewPresenter;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity implements RecyclerviewPresenter.viewCallBack {    private RecyclerView recyclerView;        List<NewBean.DataBean.ListBean> list=new ArrayList<>();    List<String> imageList;    private RecyclerviewAdapter adapter;    private Button button;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        recyclerView = (RecyclerView) findViewById(R.id.recyclerview);        button = (Button) findViewById(R.id.btn);        RecyclerviewPresenter recyclerviewPresenter = new RecyclerviewPresenter(this);        recyclerviewPresenter.getinit(" http://120.27.23.105/product/getCarts?uid=100");        recyclerView.setLayoutManager(new StaggeredGridLayoutManager(2, LinearLayout.VERTICAL));button.setOnClickListener(new View.OnClickListener() {    @Override    public void onClick(View v) {        Intent intent = new Intent(MainActivity.this, SecondActivity.class);        startActivity(intent);        finish();    }});    }    @Override    public void success(final NewBean newBean) {        runOnUiThread(new Runnable() {            @Override            public void run() {                if(list==null){                    list=new ArrayList<NewBean.DataBean.ListBean>();                }                list.add(newBean.getData().get(0).getList().get(0));                String images = list.get(0).getImages();                String[] split = images.split("\\|");                if(imageList==null){                    imageList=new ArrayList<>();                }                for (int i=0;i<split.length;i++){                    imageList.add(split[i]);                }                adapter = new RecyclerviewAdapter(MainActivity.this,imageList);                recyclerView.setAdapter(adapter);            }        });    }    @Override    public void fail(Exception e) {    }}

适配器

package com.example.myapplication.adapter;import android.content.Context;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.view.WindowManager;import android.widget.ImageView;import com.example.myapplication.R;import com.nostra13.universalimageloader.core.ImageLoader;import java.util.List;import java.util.Random;/** * Created by Administrator on 2017/11/18. */public class RecyclerviewAdapter extends RecyclerView.Adapter<RecyclerviewAdapter.ImageViewHolder> {    Context context;    List<String> imageList;    private final int itemWidth;    public RecyclerviewAdapter(Context context, List<String> imageList) {        this.context = context;        this.imageList = imageList;        WindowManager wm = (WindowManager) context                .getSystemService(Context.WINDOW_SERVICE);        int width = wm.getDefaultDisplay().getWidth();        itemWidth = width / 3;    }    @Override    public ImageViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view= LayoutInflater.from(context).inflate(R.layout.recyclerview_item,null);        return new ImageViewHolder(view);    }    @Override    public void onBindViewHolder(ImageViewHolder holder, int position) {        ViewGroup.LayoutParams params = holder.iamge.getLayoutParams();        int itemHeight = 300 ;        itemHeight = new Random().nextInt(500);        if(itemHeight < 300){            itemHeight = 300 ;        }        params.width = itemWidth ;        params.height = itemHeight ;        holder.iamge.setLayoutParams(params);        ImageLoader.getInstance().displayImage(imageList.get(position),holder.iamge);        holder.iamge.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                if(listener==null){                    listener.onClick(v);                }            }        });        holder.iamge.setOnLongClickListener(new View.OnLongClickListener() {            @Override            public boolean onLongClick(View v) {                listener.longClick(v);                return false;            }        });    }    @Override    public int getItemCount() {        return imageList.size();    }    public class ImageViewHolder extends RecyclerView.ViewHolder {        private final ImageView iamge;        public ImageViewHolder(View view) {            super(view);            iamge = (ImageView) view.findViewById(R.id.image);        }    }    private Listener listener;    public void setListener(Listener listener){        this.listener=listener;    }    public interface Listener{        public void onClick(View view);        public void longClick(View view);    }}

适配器布局

<?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:layout_width="100dp"    android:layout_height="100dp"    android:id="@+id/image"    android:src="@mipmap/ic_launcher"    /></LinearLayout>

iamgeLoger配置

package com.example.myapplication;import android.app.Application;import com.nostra13.universalimageloader.core.ImageLoader;import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;/** * Created by Administrator on 2017/11/18. */public class MyApp extends Application{    @Override    public void onCreate() {        super.onCreate();        ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(this).build();        ImageLoader.getInstance().init(configuration);    }}

model层

package com.example.myapplication.model;import com.example.myapplication.bean.NewBean;import com.google.gson.Gson;import java.io.IOException;import okhttp3.Call;import okhttp3.Callback;import okhttp3.OkHttpClient;import okhttp3.Request;import okhttp3.Response;/** * Created by Administrator on 2017/11/18. */public class RecyclerviewModel {    public void getData(String url, final modelCallBack modelCallBack){        OkHttpClient client = new OkHttpClient();        Request request = new Request.Builder()                .url(url)                .build();        client.newCall(request).enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {            }            @Override            public void onResponse(Call call, Response response) throws IOException {                String string = response.body().string();                Gson gson = new Gson();                NewBean newBean = gson.fromJson(string, NewBean.class);                modelCallBack.success(newBean);                //Log.i("111111111111",string);            }        });    }    public interface modelCallBack{        public void success(NewBean newBean);        public void fail(Exception e);    }}

presenter层

package com.example.myapplication.presenter;import android.util.Log;import com.example.myapplication.bean.NewBean;import com.example.myapplication.model.RecyclerviewModel;/** * Created by Administrator on 2017/11/18. */public class RecyclerviewPresenter{    RecyclerviewModel recyclerviewModel=new RecyclerviewModel();    viewCallBack viewCallBack;    public RecyclerviewPresenter(viewCallBack viewCallBack){        this.viewCallBack=viewCallBack;    }    public interface viewCallBack{        public void success(NewBean newBean);        public void fail(Exception e);    }    public void getinit(String url){        recyclerviewModel.getData(url, new RecyclerviewModel.modelCallBack() {            @Override            public void success(NewBean newBean) {                viewCallBack.success(newBean);                Log.i("11111111111",newBean+"");                System.out.println(newBean);            }            @Override            public void fail(Exception e) {                viewCallBack.fail(e);            }            });        }    }