Retrofit的简单使用

访问的url为：http://fy.iciba.com/ajax.php?a=fy&f=auto&t=auto&w=hello

第一步：

在app下的build.gradle中添加

// Retrofit库
compile 'com.squareup.retrofit2:retrofit:2.0.2'
// Okhttp库
compile 'com.squareup.okhttp3:okhttp:3.1.2'
//Gson库
compile 'com.squareup.retrofit2:converter-gson:2.0.2'

第二步：

创建实体类：Translation

package com.retrofit.ych.retrofit.entity;
public class Translation {
    private int status;
    private content content;
    private static class content{
        private String ph_en;
        private String ph_am;
        private String ph_am_mp3;
        private String[] word_mean;

        public String getPh_en() {
            return ph_en;
        }

        public void setPh_en(String ph_en) {
            this.ph_en = ph_en;
        }

        public String getPh_am() {
            return ph_am;
        }

        public void setPh_am(String ph_am) {
            this.ph_am = ph_am;
        }

        public String getPh_am_mp3() {
            return ph_am_mp3;
        }

        public void setPh_am_mp3(String ph_am_mp3) {
            this.ph_am_mp3 = ph_am_mp3;
        }

        public String[] getWord_mean() {
            return word_mean;
        }

        public void setWord_mean(String[] word_mean) {
            this.word_mean = word_mean;
        }
    }

    public int getStatus() {
        return status;
    }

    public void setStatus(int status) {
        this.status = status;
    }

    public Translation.content getContent() {
        return content;
    }

    public void setContent(Translation.content content) {
        this.content = content;
    }

    //定义数据返回数据的方法
    public void show(){
        System.out.println("ph_en"+content.ph_en);
        System.out.println("ph_am"+content.ph_am);
        System.out.println("ph_am_mp3"+content.ph_am_mp3);
        System.out.println("word_mean"+content.word_mean.length);
        for (int i=0;i<content.word_mean.length;i++){
            System.out.println("word_mean"+content.word_mean[i]);
        }
    }
}

第三步：

封装网络请求接口：HttpRequest_Interface

package com.retrofit.ych.retrofit.http;
import com.retrofit.ych.retrofit.entity.Translation;
import retrofit2.Call;
import retrofit2.http.HTTP;
import retrofit2.http.Query;

//封装网络请求的接口
public interface HttpRequest_Interface {
    @HTTP(method = "POST",path = "ajax.php",hasBody = true)
    Call<Translation> getCall(@Query("a") String fy,@Query("f") String f,@Query("t") String t,@Query("w") String w);
}

第四步：

创建网络请求访问类：HttpRequest

package com.retrofit.ych.retrofit.http;
import android.util.Log;
import com.retrofit.ych.retrofit.entity.Translation;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;
public class HttpRequest {
    public static void request(){
        //创建Retrofit对象
        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl("http://fy.iciba.com/")
                .addConverterFactory(GsonConverterFactory.create())
                .build();

        //创建网络请求接口的实例
        final HttpRequest_Interface request = retrofit.create(HttpRequest_Interface.class);
        //对发送请求进行封装
        Call<Translation> call = request.getCall("fy","auto","auto","hello");
        //异步发送网络请求
        call.enqueue(new Callback<Translation>() {
            @Override
            public void onResponse(Call<Translation> call, Response<Translation> response) {
                //请求成功，进入
                //处理返回的数据
                Translation translation = response.body();
                translation.show();
            }
            @Override
            public void onFailure(Call<Translation> call, Throwable t) {
                //请求失败进入
                Log.e("tag","请求失败");
            }
        });
    }
}

第五步：

入口：MainActivity

package com.retrofit.ych.retrofit;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import static com.retrofit.ych.retrofit.http.HttpRequest.request;
public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        request();
    }
}

简单demo,请勿喷，谢谢！

下载：https://download.csdn.net/download/yangchanghong1995/10470447