recyclearview 网络数据

最新推荐文章于 2020-12-28 16:49:58 发布

Hypoc7isyLK

最新推荐文章于 2020-12-28 16:49:58 发布

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文章标签：网络获取数据 recyclearview

本文链接：https://blog.youkuaiyun.com/Hypoc7isyLK/article/details/84224774

版权

本博客详细介绍了使用Android平台和OkHttp库开发新闻应用的过程，包括数据获取、解析、展示及UI设计。通过调用API获取新闻数据，使用Gson进行JSON解析，并利用RecyclerView实现列表展示。同时，还实现了图片加载、适配器自定义及删除功能。

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Mainactivity

package likuo.bwie.com.zhoukao3;

import android.content.Context;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.DividerItemDecoration;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.OrientationHelper;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.Toast;

import com.google.gson.Gson;

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

import likuo.bwie.com.zhoukao3.adapter.MyAdapter;
import likuo.bwie.com.zhoukao3.bean.Person;
import likuo.bwie.com.zhoukao3.network.NetWork;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class MainActivity extends AppCompatActivity implements NetWork.Shuju {
    private RecyclerView recyclerview;
    MyAdapter mAdapter;
    NetWork mNetWork;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mNetWork = new NetWork();
        initView();
        mAdapter = new MyAdapter(this);
        mNetWork.setShuju(this);
        mNetWork.nerWork();

        recyclerview.setAdapter(mAdapter);

    }
    

    private void initView() {

        recyclerview = findViewById(R.id.recyclerview);
        recyclerview.setLayoutManager(new LinearLayoutManager(this,OrientationHelper.VERTICAL,false));
        DividerItemDecoration decoration = new DividerItemDecoration(this,1);
        decoration.setDrawable(ContextCompat.getDrawable(this,R.drawable.shape));
        recyclerview.addItemDecoration(decoration);
    }

    @Override
    public void successs(final List<Person.DataBean> data) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                mAdapter.setdata(data);
            }
        });
    }

    @Override
    public void error() {

    }
}

NetWork

package likuo.bwie.com.zhoukao3.network;

import android.widget.Toast;

import com.google.gson.Gson;

import java.io.IOException;
import java.util.List;
import java.util.concurrent.TimeUnit;

import likuo.bwie.com.zhoukao3.MainActivity;
import likuo.bwie.com.zhoukao3.bean.Person;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

/**
 * date:2018/11/17
 * author:李阔(淡意衬优柔)
 * function:
 */
public class NetWork {

    String path = "http://www.xieast.com/api/news/news.php";

    public void nerWork(){
        OkHttpClient okHttpClient = new OkHttpClient.Builder()
                .connectTimeout(5, TimeUnit.SECONDS)
                .writeTimeout(5, TimeUnit.SECONDS)
                .readTimeout(5, TimeUnit.SECONDS)
                .build();
        Request request = new Request.Builder()
                .url(path)
                .build();
        Call call = okHttpClient.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                String result = response.body().string();
                Person person = new Gson().fromJson(result, Person.class);
                List<Person.DataBean> data = person.getData();
                mShuju.successs(data);
            }
        });

    }
    public interface Shuju{
        void successs(List<Person.DataBean> data);
        void error();
    }

    private Shuju mShuju;

    public void setShuju(Shuju shuju) {
        mShuju = shuju;
    }
}

adapter

package likuo.bwie.com.zhoukao3.adapter;

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

import com.bumptech.glide.Glide;

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

import likuo.bwie.com.zhoukao3.R;
import likuo.bwie.com.zhoukao3.bean.Person;

/**
 * date:2018/11/17
 * author:李阔(淡意衬优柔)
 * function:
 */
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {

    Context context;
    List<Person.DataBean> list;

    public MyAdapter(Context context) {
        this.context = context;
        list = new ArrayList<>();
    }

    public void setdata(List<Person.DataBean> list) {
        this.list.clear();
        this.list.addAll(list);
        notifyDataSetChanged();
    }

    public class ViewHolder extends RecyclerView.ViewHolder{
        Button delete;
        TextView textview1;
        TextView textview2;
        ImageView imageview;

        public ViewHolder(@NonNull View itemView) {
            super(itemView);
            textview1 = itemView.findViewById(R.id.textview1);
            textview2 = itemView.findViewById(R.id.textview2);
            imageview = itemView.findViewById(R.id.image);
            delete = itemView.findViewById(R.id.delete);
        }
    }


    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view = View.inflate(context, R.layout.item,null);

        ViewHolder viewHolder = new ViewHolder(view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder viewHolder, final int i) {
        viewHolder.textview1.setText(list.get(i).getAuthor_name());
        viewHolder.textview2.setText(list.get(i).getTitle());
        Glide.with(context).load(list.get(i).getThumbnail_pic_s()).into(viewHolder.imageview);

        viewHolder.delete.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                list.remove(i);
                notifyDataSetChanged();
            }
        });
    }


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



}

布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="vertical">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="60dp">

        <ImageView
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:layout_alignParentStart="true"
            android:layout_centerVertical="true"
            android:layout_marginStart="11dp"
            android:src="@mipmap/fanhui"
            />

        <TextView
            android:id="@+id/text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:text="今日头条"
            android:textSize="40sp" />

        <ImageView
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:layout_below="@+id/text"
            android:layout_alignParentEnd="true"
            android:layout_marginTop="-47dp"
            android:layout_marginEnd="0dp"
            android:src="@mipmap/weixuan" />


    </RelativeLayout>

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


</LinearLayout>

item

<?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="horizontal">

    <ImageView
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:id="@+id/image"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:orientation="vertical"
        >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/textview1"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/textview2"
            />
        <Button
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="删除"
            android:id="@+id/delete"
            android:onClick="remove"/>

    </LinearLayout>


</LinearLayout>