OKHttp 的基本封装

//封装的工具类

package com.example.okhttp_fenzhuang.util;

import android.os.Handler;

import java.io.IOException;

import java.util.Map;

import java.util.Set;

import java.util.concurrent.TimeUnit;

import okhttp3.Call;

import okhttp3.Callback;

import okhttp3.FormBody;

import okhttp3.OkHttpClient;

import okhttp3.Request;

import okhttp3.RequestBody;

import okhttp3.Response;

public class RequestDataUtil {

private static OkHttpClient client ;

private static Handler handler ;

//构造方法

private RequestDataUtil() {

client = new OkHttpClient.Builder()

.connectTimeout( 10 , TimeUnit. SECONDS )

.writeTimeout( 10 , TimeUnit. SECONDS )

.readTimeout( 10 , TimeUnit. SECONDS )

.build();

handler = new Handler();

}

private static final RequestDataUtil dataUtil = new RequestDataUtil();

public static RequestDataUtil getInstance(){

return dataUtil ;

}

//定义接口

public interface IcallBack{

void onResponse(String jsonData); //请求数据是Json数据时使用

}

public interface IcallBack2{

void onResponse( byte [] bytes); //请求数据是时使用

}

public interface IcallBack3{

void onResponse(String jsonData); //请求数据是Json数据时使用

}

//将编程的代码运行到主线程中

//处理请求网络成功的方法,返回的结果是Json字符串

public static void requestJsonDataOk( final String jsonData, final IcallBack icallBack){

handler .post( new Runnable() {

@Override

public void run() {

if ( icallBack != null ){

icallBack .onResponse( jsonData );

}

}

});

}

public static void requestJsonDataOk3( final String jsonData, final IcallBack3 icallBack){

handler .post( new Runnable() {

@Override

public void run() {

if ( icallBack != null ){

icallBack .onResponse( jsonData );

}

}

});

}

//处理请求网络成功的方法,返回的结果是byte数组

public static void requestByteOk( final byte [] bytes, final IcallBack2 icallBack){

handler .post( new Runnable() {

@Override

public void run() {

if ( icallBack != null ){

icallBack .onResponse( bytes );

}

}

});

}

//-------------------------------------------------------------------------------------------------------

//提供外部调用的方法

/**

* 请求指定的URL返回的结果是Json字符串

*/

public static void setRequestJsonData(String myUrl, final IcallBack icallBack){

Request request = new Request.Builder().url(myUrl).build();

Call call = client .newCall(request);

call.enqueue( new Callback() {

@Override

public void onFailure(Call call, IOException e) {

//请求失败

}

@Override

public void onResponse(Call call, Response response) throws IOException {

//请求成功

String jsonData = response.body().string();

requestJsonDataOk (jsonData, icallBack ); //调用请求成功时执行的方法

}

});

}

/**

* 请求指定的URL返回的结果是byte数组

*/

public static void setRrequestByte(String myUrl, final IcallBack2 icallBack){

Request request = new Request.Builder().url(myUrl).build();

Call call = client .newCall(request);

call.enqueue( new Callback() {

@Override

public void onFailure(Call call, IOException e) {}

@Override

public void onResponse(Call call, Response response) throws IOException {

byte [] bytes = response.body().bytes();

requestByteOk (bytes, icallBack ); //调用请求成功时执行的方法

}

});

}

/**

* 请求指定的URL返回的结果是Json字符串 这个是提交表单

*/

public static void setRequestJsonData3(String myUrl, Map map, final IcallBack3 icallBack3){

//创建表单

FormBody.Builder builder = new FormBody.Builder();

//得到map集合当中的数据

for (Map.Entry entry : map.entrySet() ) {

builder.add(entry.getKey(),entry.getValue());

}

RequestBody requestBody = builder.build();

Request request = new Request.Builder().post(requestBody).url(myUrl).build();

Call call = client .newCall(request);

call.enqueue( new Callback() {

@Override

public void onFailure(Call call, IOException e) {}

@Override

public void onResponse(Call call, Response response) throws IOException {

//请求成功

String jsonData = response.body().string();

requestJsonDataOk3 (jsonData, icallBack3 ); //调用请求成功时执行的方法

}

});

}

}

//网络请求的工具类

------------------------------------------------------------------

package com.example.okhttp_fenzhuang;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.ImageView;

import android.widget.TextView;

import com.example.okhttp_fenzhuang.util.RequestDataUtil;

import com.google.gson.Gson;

import java.util.HashMap;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private Button btn_img ;

private Button btn_log ;

private Button btn_request ;

private ImageView imageView ;

private TextView txt_content ;

private String myUrlJson = "http://api.tianapi.com/world/?key=55acaf346503d8d5f98af8dec90ceb01&num=10" ;

private String muUrlImg = "http://s13.sinaimg.cn/mw690/003WdrRCty6DP7FOPi48c&690" ;

private String muUrlPost = "https://www.zhaoapi.cn/user/getUserInfo" ;

@Override

protected void onCreate(Bundle savedInstanceState) {

super .onCreate(savedInstanceState);

setContentView(R.layout. activity_main );

initView(); //初始化

}

private void initView() {

//获取资源id

btn_img = findViewById(R.id. btn_img );

。。。。。。。。。自己写

}

@Override

public void onClick(View view) {

//得到网络请求的工具类

RequestDataUtil dataUtil = RequestDataUtil. getInstance ();

switch (view.getId()){

case R.id. btn_img : //下载图片

dataUtil. setRrequestByte ( muUrlImg , new RequestDataUtil.IcallBack2() {

@Override

public void onResponse( byte [] bytes) {

Bitmap bitmap = BitmapFactory. decodeByteArray (bytes, 0 , bytes. length );

imageView .setImageBitmap(bitmap);

}

});

break ;

case R.id. btn_log : //模拟登陆Post请求

HashMap map = new HashMap<>();

map.put( "uid" , "123" );

map.put( "id" , "7" );

dataUtil. setRequestJsonData3 ( muUrlPost , map, new RequestDataUtil.IcallBack3() {

@Override

public void onResponse(String jsonData) {

Gson gson = new Gson();

MyGson myGson = gson.fromJson(jsonData, MyGson. class );

String msg = myGson.getMsg();

txt_content .setText(msg);

}

});

break ;

case R.id. btn_request : //请求的是json数据

dataUtil. setRequestJsonData ( myUrlJson , new RequestDataUtil.IcallBack() {

@Override

public void onResponse(String jsonData) {

Log. d ( "zzzz" , "onResponse: " +jsonData);

}

});

break ;

}

}

}