okhttp二次封装

package com.example.soulelegy.project_news_demo.Utils;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Handler;
import android.os.Looper;

import com.example.soulelegy.project_news_demo.Base.DataBase;
import com.google.gson.Gson;

import org.json.JSONObject;

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

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

/**
* Created by Soul elegy on 2017/9/6.
*/
//实现两个功能,一个是从服务端下载数据,一个是从客户端提交数据
//封装优秀的ikhttp:okhttpUtils,OKGO(更深入的封装,研究OKGO)
//节约内存,是所有网络请求都用一个okhttpclent和handler对象
//解决okhttp,网络请求成功,代码在子线程的问题上把请求成功后的逻辑代码放到主线程中执行
//简化代码
//封装用到的知识点:单例模式,handle.接口回调,okhttp
public class OkhttpManage {
/////////////////////////////////定义成员变量////////////////
private OkHttpClient okHttpClient;
private static Handler handler;
private List<DataBase.ResultBean.DataBean> datas;
private volatile static OkhttpManage manage;//volatile关键字的作用:防止多个线程同时访问

////////////////////////////////使用构造方法,完成初始化////////////////////
//在使用单例模式时,构造方法权限一般为私有,
private OkhttpManage() {
okHttpClient = new OkHttpClient();
handler = new Handler(Looper.getMainLooper());
}

////////////////////////////////使用单例模式,通过获取的方式拿到对象////////////////////
//单例模式分为懒汉式和饿汉式
public static OkhttpManage getInstance() {
OkhttpManage instance = null;
if (manage == null) {
synchronized (OkhttpManage.class) {
if (instance == null) {
instance = new OkhttpManage();
manage = instance;
}
}
}
return manage;
}

////////////////////////////////定义接口////////////////////
public interface YANc1 {
void onResponse(List<DataBase.ResultBean.DataBean> result);
}

interface YANc2 {
void onResponse(Bitmap bitmap);
}

interface YANc3 {
void onResponse(JSONObject object);
}

////////////////////////////////使用handler,接口,保证处理数据的逻辑在主线程////////////////////
//请求网络成功的方法,返回的结果是json字符串
private static void onSuccessJsonSringMethod(final List<DataBase.ResultBean.DataBean> jsonValue, final YANc1 callBack) {
//把数据放到主线程,以后可以用EventBus或RxJava的线程调度器去完成
handler.post(new Runnable() {
@Override
public void run() {
if (callBack != null) {
try {
callBack.onResponse(jsonValue);
} catch (Exception e) {
e.printStackTrace();
}
}
}
});
}

//请求网络成功的方法,返回的结果是bitmap图片
private static void onSuccessimageByteMethod(final byte[] json, final YANc2 callBack) {
//把数据放到主线程,以后可以用EventBus或RxJava的线程调度器去完成
handler.post(new Runnable() {
@Override
public void run() {
if (callBack != null) {
try {
Bitmap bitmap = BitmapFactory.decodeByteArray(json, 0, json.length);
callBack.onResponse(bitmap);
} catch (Exception e) {
e.printStackTrace();
}
}
}
});
}

////////////////////////////////暴露提供给外界调用的方法////////////////////
//请求指定的URL返回的结果是json字符串
public void asyncJsonStringByUrl(String url, final YANc1 callBack) {
Call call = okHttpClient.newCall(new Request.Builder().url(url).build());
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {

}

@Override
public void onResponse(Call call, Response response) throws IOException {
if (response != null && response.isSuccessful()) {
String json = response.body().string();
Gson gson = new Gson();
DataBase dataBase = gson.fromJson(json, DataBase.class);
datas = new ArrayList<DataBase.ResultBean.DataBean>();
datas.addAll(dataBase.getResult().getData());
onSuccessJsonSringMethod(datas, callBack);
}
}
});
}
/*
//提交表单
public void sendComplexForm(String url, Map<String, String> params, final YANc1 callBack) {
FormBody.Builder fb = new FormBody.Builder();
if (params != null && !params.isEmpty()) {
for (Map.Entry<String, String> entry : params.entrySet()) {
fb.add(entry.getKey(), entry.getValue());
}
}
FormBody reb = fb.build();
Request request = new Request.Builder()
.post(reb)
.url(url)
.build();
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}

@Override
public void onResponse(Call call, Response response) throws IOException {
if (response != null && response.isSuccessful()) {
onSuccessJsonSringMethod(response.body().string(), callBack);
}
}
});
}*/

//下载图片
public void asyncJsonByteByUrl(String url, final YANc2 callBack) {
Call call = okHttpClient.newCall(new Request.Builder().url(url).build());
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}

@Override
public void onResponse(Call call, Response response) throws IOException {
if (response != null && response.isSuccessful()) {
byte[] bytes = response.body().bytes();
onSuccessimageByteMethod(bytes, callBack);
}
}
});
}


}