okhttp三层网络封装

联网请求数据一般都会使用okhttp,比retrofit相对简单。关于底层和原理就不再分析了，这里分享一下简单的封装，可以直接拿到项目中使用。

1.提取 MyNetClient，封装网络对象初始化。

package com.freevoip.airtime.net;

import android.os.Handler;
import android.os.Looper;
import android.widget.Toast;

import com.freevoip.airtime.MyApp;

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

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.MediaType;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class NetClient {
    public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
    private static NetClient netClient;
    private Handler handler;

    private NetClient() {
        client = getClient();
        //使用传入一个 Looper的构造 把主线程的looper传进来 确保handler处理消息是在主线程中处理
        handler = new Handler(Looper.getMainLooper());
    }

    public static NetClient getInstance() {
        if (netClient == null) {
            netClient = new NetClient();
        }
        return netClient;
    }


    private final OkHttpClient client;

    private OkHttpClient getClient() {
        OkHttpClient client = new OkHttpClient.Builder()
                .readTimeout(5000, TimeUnit.MILLISECONDS)
                .connectTimeout(5000, TimeUnit.MILLISECONDS)
                .build();
        return client;
    }

    public void doGet(String url, Map params, final MyCallBack callback) {

        ArrayList tmpArray = new ArrayList();
        for (Map.Entry entry : params.entrySet()) {
            tmpArray.add(entry.getKey());
        }
        for (int i = 0; i < tmpArray.size(); i++) {
            String key = tmpArray.get(i).toString();
            if (i == 0) {
                url += "?" + key + "=" + params.get(key);
            } else {
                url += "&" + key + "=" + params.get(key);
            }
        }

        Request request = new Request.Builder().url(url).build();
        Call call = client.newCall(request);
        call.enqueue(new Callback() {
                @Override
            public void onFailure(Call call, IOException e) {
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            //在主线程中执行回调方法
                            Toast.makeText(MyApp.getInstance(), "网络连接异常", Toast.LENGTH_SHORT).show();
                            callback.onFailure(-1);
                        }
                    });

            }

            @Override
            public void onResponse(Call call, final Response response) throws IOException {
                if (response.code() == 200) {
                    final String json = response.body().string();
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            callback.onResponse(json);
                        }
                    });
                }else {
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            Toast.makeText(MyApp.getInstance(), "网络连接异常", Toast.LENGTH_SHORT).show();
                            callback.onFailure(response.code());
                        }
                    });
                }
            }
        });
    }

    public void doPost(String url, Map params, final MyCallBack callback) {
//        http://blog.csdn.net/lmj623565791/article/details/47911083
        FormBody.Builder bodyBuilder = new FormBody.Builder();
        ArrayList tmpArray = new ArrayList();
        for (Map.Entry entry : params.entrySet()) {
            tmpArray.add(entry.getKey());
        }
        for (int i = 0; i < tmpArray.size(); i++) {
            String key = tmpArray.get(i).toString();
            bodyBuilder.add(key, params.get(key).toString());
        }
        FormBody body = bodyBuilder.build();
        Request request = new Request.Builder().url(url).post(body).build();
        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        //在主线程中执行回调方法
                        Toast.makeText(MyApp.getInstance(), "网络连接异常", Toast.LENGTH_SHORT).show();
                        callback.onFailure(-1);
                    }
                });
            }

            @Override
            public void onResponse(Call call, final Response response) throws IOException {
                if (response.code() == 200) {
                    final String json = response.body().string();
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            callback.onResponse(json);
                        }
                    });
                }else {
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            Toast.makeText(MyApp.getInstance(), "网络连接异常", Toast.LENGTH_SHORT).show();
                            callback.onFailure(response.code());
                        }
                    });
                }
            }
        });
    }

}

当然也可以把request提取出来。

2.提取 MyApi，封装 API 请求参数。界面上可以不再关心网络参数

public class ApiUrls {
    public static  final String HOST="http://www.baidu.com.cn";
    public static  final String SENDCODE=HOST+"...接口内容";
 }

3.提取 MyCallBack 接口，解耦网络回调。API 可以不再关心底层的网络类。

public interface MyCallBack {
    void onFailure(int code);
    void onResponse(String json);
}

封装了成功失败的方法。
从此，界面、API、Client 三层独立，互不影响。

在使用的时候只需要

//创建一个集合 传入接口所需参数
  Map params = new LinkedHashMap();
  params.put("tel", use);
  params.put("passwd", pad);
   //发起网络请求 传入请求url,接口参数，在回调中的成功失败方法处理逻辑
  NetClient.getInstance().doPost(ApiUrls.LOGIN, params, new MyCallBack() {
  @Override
      public void onFailure(int code) {}
  @Override
    public void onResponse(String json) {
  //这里这样写因为我的bean类继承了一个basebean 返回的所有json中都有成功失败的状态，根据basebean中的成功失败状态 设置数据传输，如果解析自己的数据可以忽略下面2行。
           SKUserInfo userInfo = gson.fromJson(json, SKUserInfo.class);
         if (userInfo.getSuccess()) {
    }
    });

这样简单的okhttp 三层网络封装就完成了，可以直接拿到项目中使用了。