构建新闻应用-优快云博客

本文链接：https://blog.youkuaiyun.com/cxx13700/article/details/83720044

//版本号改成统一的

configurations.all {
    resolutionStrategy.eachDependency { DependencyResolveDetails details ->
        def requested = details.requested
        if (requested.group == 'com.android.support') {
            if (!requested.name.startsWith("multidex")) {
                details.useVersion '26.1.0'
            }
        }
    }
}

//主页面布局

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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.bwei.www.moniweek110302.MainActivity">


    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycleview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
    </android.support.v7.widget.RecyclerView>

</android.support.constraint.ConstraintLayout>

//瀑布流布局

<?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">

    <com.facebook.drawee.view.SimpleDraweeView
        android:layout_gravity="center"
        android:id="@+id/img1"
        android:layout_width="70dp"
        android:layout_height="70dp" />

    <TextView
        android:id="@+id/txt1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

//HttpUtils

package com.bwei.www.moniweek110302.HttpUtils;

import java.util.concurrent.TimeUnit;

import okhttp3.OkHttpClient;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

/**
 * Created by asus on 2018/11/3.
 */

public class RetrofitManager {
    private static final String BASE_URL = "http://www.zhaoapi.cn/";
    private Retrofit mRetrofit;

    private static final class SINGLE_INSTANCE {
        private static final RetrofitManager _Instance = new RetrofitManager();

    }

    public static RetrofitManager getInatance() {
        return SINGLE_INSTANCE._Instance;
    }

    private RetrofitManager() {
        mRetrofit = new Retrofit.Builder()
                .baseUrl(BASE_URL)
                .addConverterFactory(GsonConverterFactory.create())
                .client(buildOKHttpClient())
                .build();
    }

    private OkHttpClient buildOKHttpClient() {
        return new OkHttpClient.Builder()
                .readTimeout(5000, TimeUnit.MILLISECONDS)
                .writeTimeout(5000, TimeUnit.MILLISECONDS)
                .build();
    }

    public Retrofit getmRetrofit() {
        return mRetrofit;
    }

    public <T> T creat(Class<T> clazz) {
        return mRetrofit.create(clazz);
    }

}

//截取字符串

package com.bwei.www.moniweek110302.HttpUtils;

/**
 * Created by asus on 2018/11/4.
 */

public class ImgProcess {
    public static String getImg(String img){
        String[] a = img.split("\\|");
        return a[0];
    }
}

//网址替换

package com.bwei.www.moniweek110302.HttpUtils;

/**
 * Created by asus on 2018/11/3.
 */

public class StringUtils {
    public static String https2Http(String url){
        return url.replace("https","http");
    }
}

//下面是框架Api

package com.bwei.www.moniweek110302;

import com.bwei.www.moniweek110302.bean.NewsBean;

import retrofit2.Call;
import retrofit2.http.GET;

/**
 * Created by asus on 2018/11/3.
 */

public interface NewsApi {



    @GET("home/getHome")
    Call<NewsBean> showBean();
}

//Inter层的ICallBack

package com.bwei.www.moniweek110302;

import com.bwei.www.moniweek110302.bean.NewsBean;

/**
 * Created by asus on 2018/11/3.
 */

public interface ICallBack {
    void onSuccess(NewsBean newsBean);
    void onFiled(Exception e);
}

//model层

package com.bwei.www.moniweek110302.model;


import com.bwei.www.moniweek110302.HttpUtils.RetrofitManager;
import com.bwei.www.moniweek110302.NewsApi;
import com.bwei.www.moniweek110302.bean.NewsBean;

import retrofit2.Call;

/**
 * Created by asus on 2018/11/3.
 */

public class NewsModel {

    public Call<NewsBean> getData() {

        NewsApi newsApi = RetrofitManager.getInatance().creat(NewsApi.class);
        return newsApi.showBean();
    }
}

//view层

package com.bwei.www.moniweek110302.view;

/**
 * Created by asus on 2018/11/3.
 */

public interface Iview {
    void success(Object obj);
    void faild(Exception e);
}

//presenter层

package com.bwei.www.moniweek110302.personter;

import com.bwei.www.moniweek110302.bean.NewsBean;
import com.bwei.www.moniweek110302.model.NewsModel;
import com.bwei.www.moniweek110302.view.Iview;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

/**
 * Created by asus on 2018/11/3.
 */

public class NewsPersonter {
    private Iview iview;

    public void attach(Iview iview) {
        this.iview = iview;
    }

    public void dettach() {
        this.iview = null;
    }

    public void getData() {

        NewsModel newsModel = new NewsModel();

        Call<NewsBean> call = newsModel.getData();

        call.enqueue(new Callback<NewsBean>() {
            @Override
            public void onResponse(Call<NewsBean> call, Response<NewsBean> response) {
                if (response.isSuccessful()) {
                    if (response.body() != null & "0".equals(response.body().getCode())) {
                        NewsBean newsBean = response.body();
                        if (iview != null) {

                            iview.success(newsBean);
                        }

                    }
                }
            }

            @Override
            public void onFailure(Call<NewsBean> call, Throwable t) {

            }
        });
    }
}

//此处省略Bean层

//adapter

package com.bwei.www.moniweek110302.adapter;

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

import com.bwei.www.moniweek110302.HttpUtils.ImgProcess;
import com.bwei.www.moniweek110302.R;
import com.bwei.www.moniweek110302.bean.NewsBean;
import com.facebook.drawee.view.SimpleDraweeView;

import java.util.List;

import butterknife.BindView;
import butterknife.ButterKnife;

/**
 * Created by asus on 2018/11/3.
 */

public class NewsAdapter extends RecyclerView.Adapter<NewsAdapter.ViewHolder> {
    private Context context;
    private List<NewsBean.DataBean.MiaoshaBean.ListBean> list;

    public NewsAdapter(Context context,  List<NewsBean.DataBean.MiaoshaBean.ListBean> list) {
        this.context = context;
        this.list = list;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = View.inflate(context, R.layout.item_waterfall, null);
        ViewHolder holder = new ViewHolder(v);
        return holder;
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        holder.txt1.setText(list.get(position).getTitle());
        holder.img1.setImageURI(Uri.parse(ImgProcess.getImg(list.get(position).getImages())));


    }

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

    public class ViewHolder extends RecyclerView.ViewHolder {
          @BindView(R.id.img1)
          SimpleDraweeView img1;

        @BindView(R.id.txt1)
        TextView txt1;

        public ViewHolder(View itemView) {
            super(itemView);
            ButterKnife.bind(this, itemView);
        }
    }

}

//主页面

package com.bwei.www.moniweek110302;

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

import com.bwei.www.moniweek110302.adapter.NewsAdapter;
import com.bwei.www.moniweek110302.bean.NewsBean;
import com.bwei.www.moniweek110302.personter.NewsPersonter;
import com.bwei.www.moniweek110302.view.Iview;

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

import butterknife.BindView;

public class MainActivity extends AppCompatActivity implements Iview {

    private NewsPersonter newsPersonter;
    private NewsAdapter adapter;
    private  List<NewsBean.DataBean.MiaoshaBean.ListBean> list;
    @BindView(R.id.recycleview)
    RecyclerView recyclerView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        recyclerView = findViewById(R.id.recycleview);

        newsPersonter = new NewsPersonter();
        newsPersonter.attach(this);
        newsPersonter.getData();
        RecyclerView.LayoutManager layoutManager = new StaggeredGridLayoutManager(2, LinearLayoutManager.VERTICAL);

        recyclerView.setLayoutManager(layoutManager);

        // 添加默认条目分割线
        recyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));

        // 默认条目动画效果
        recyclerView.setItemAnimator(new DefaultItemAnimator());

        list = new ArrayList<>();
        adapter = new NewsAdapter(this, list);
        recyclerView.setAdapter(adapter);
    }

    @Override
    public void success(Object obj) {
       NewsBean bean= (NewsBean) obj;
        NewsBean.DataBean data = bean.getData();
        NewsBean.DataBean.MiaoshaBean miaosha = data.getMiaosha();
        List<NewsBean.DataBean.MiaoshaBean.ListBean> list1 = miaosha.getList();
        this.list.addAll(list1);
        adapter.notifyDataSetChanged();

    }

    @Override
    public void faild(Exception e) {

    }
}

//Fresco

package com.bwei.www.moniweek110302;

import android.app.Application;

import com.facebook.drawee.backends.pipeline.Fresco;

/**
 * Created by asus on 2018/11/4.
 */

public class App extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        Fresco.initialize(this);
    }
}

//加网络权限和name

   implementation 'com.facebook.fresco:fresco:1.9.0'
// 支持 GIF 动图，需要添加
    implementation 'com.facebook.fresco:animated-gif:1.9.0'
    //Recyclerview
    implementation'com.android.support:recyclerview-v7:26.1.0'
    //retrofit2
    compile 'com.squareup.retrofit2:retrofit:+'
    compile 'com.squareup.retrofit2:converter-gson:+'
    //图片缓存依赖
    implementation 'com.github.bumptech.glide:glide:4.8.0'
    annotationProcessor 'com.github.bumptech.glide:compiler:4.8.0'
    //Butterknife依赖
    implementation 'com.jakewharton:butterknife:9.0.0-rc1'
    annotationProcessor 'com.jakewharton:butterknife-compiler:9.0.0-rc1'
    //Fresco
    implementation 'com.facebook.fresco:fresco:1.9.0'

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