Retrofit简单了解

package com.example.lianxi;/** * Created by HP on 2017/11/4. */public class Contanst {    public static final String BASE_URL= "http://v.juhe.cn/";}

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package com.example.lianxi;import retrofit2.Call;import retrofit2.http.GET;/** * Created by HP on 2017/11/4. */public interface Utils {    @GET("toutiao/index?type=top&key=6535f9a621cb3661b96f538ea740c9b6")    Call<Bean> getLat();    @GET("toutiao/index?type=top&key=6535f9a621cb3661b96f538ea740c9b6")    Call<Bean> getLatss();}

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package com.example.lianxi;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.widget.ListView;import java.util.ArrayList;import java.util.List;import retrofit2.Call;import retrofit2.Callback;import retrofit2.Response;import retrofit2.Retrofit;import retrofit2.converter.gson.GsonConverterFactory;public class MainActivity extends AppCompatActivity {    private ListView mylist;    private Adapter ad;    private List<Bean> list = new ArrayList<>();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        Retrofit retrofit=new Retrofit.Builder()                .baseUrl(Contanst.BASE_URL)                .addConverterFactory(GsonConverterFactory.create())   //实现Gson解析                .build();        Utils utils=retrofit.create(Utils.class);        utils.getLatss().enqueue(new Callback<Bean>() {            @Override            public void onResponse(Call<Bean> call, Response<Bean> response) {                Bean bean=response.body();                list.add(bean);                ad=new Adapter(MainActivity.this,list);                mylist.setAdapter(ad);            }            @Override            public void onFailure(Call<Bean> call, Throwable t) {            }        });    }    private void initView() {        mylist = (ListView) findViewById(R.id.mylist);    }}

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package com.example.lianxi;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;import com.bumptech.glide.Glide;import java.util.ArrayList;import java.util.List;/** * Created by HP on 2017/11/4. */public class Adapter extends BaseAdapter {    Context context;    List<Bean> list = new ArrayList<>();    public Adapter(Context context, List<Bean> list) {        this.context = context;        this.list = list;    }    @Override    public int getCount() {        return list.size();    }    @Override    public Object getItem(int position) {        return null;    }    @Override    public long getItemId(int position) {        return 0;    }    @Override    public View getView(int i, View view, ViewGroup viewGroup) {        Viewholder holder = null;        if(view == null){            holder = new Viewholder();            view = View.inflate(context,R.layout.item,null);            holder.img = view.findViewById(R.id.myimg);            holder.tv = view.findViewById(R.id.mytv);            view.setTag(holder);        }else{            holder = (Viewholder) view.getTag();        }        Glide.with(context).load(list.get(i).getResult().getData().get(i).getThumbnail_pic_s()).into(holder.img);        holder.tv.setText(list.get(i).getResult().getData().get(i).getTitle());        return view;    }    class Viewholder{        ImageView img;        TextView tv;    }}

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<?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:layout_width="match_parent"    android:layout_height="match_parent" tools:context="com.example.lianxi.MainActivity">    <ListView        android:id="@+id/mylist"        android:layout_width="match_parent"        android:layout_height="match_parent"></ListView></RelativeLayout>

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<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:orientation="vertical">    <LinearLayout        android:orientation="horizontal"        android:layout_width="wrap_content"        android:layout_height="wrap_content">        <ImageView            android:id="@+id/myimg"            android:background="@mipmap/ic_launcher"            android:layout_width="wrap_content"            android:layout_height="wrap_content" />        <TextView            android:id="@+id/mytv"            android:text="5555"            android:textSize="20sp"            android:layout_width="wrap_content"            android:layout_height="match_parent" />    </LinearLayout></LinearLayout>=====================
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.lianxi">    <uses-permission android:name="android.permission.INTERNET"></uses-permission>    <application        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:roundIcon="@mipmap/ic_launcher_round"        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>
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dependencies {    compile fileTree(dir: 'libs', include: ['*.jar'])    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.+'    compile 'com.android.support.constraint:constraint-layout:1.0.2'    testCompile 'junit:junit:4.12'    compile 'com.github.bumptech.glide:glide:3.7.0'    compile 'com.squareup.retrofit2:converter-gson:2.0.0-beta4'}