初步学习OkHttp

来源：互联网发布：mysql下create index 编辑：程序博客网时间：2024/06/08 03:59

写在最前面：用于个人学习，资料来源于《第一行代码》（郭霖著）和 OkHttp教程

1. 首先添加OkHttp库的依赖

在app/build.gradle里的dependencies闭包里加入最新版本的okhttp依赖

dependencies {    ...(省略部分)    compile 'com.squareup.okhttp3:okhttp:3.7.0'    ...}

或者在File-Project Structure-app-denpendencies里从网上导入相应的依赖
这里写图片描述

2. 创建一个OkHttp实例

OkHttpClient client = new OkHttpClient();

3. 创建一个Request对象

Request request = new Request.Builder().url("网址")  //或者调用String变量.build();

4.调用同步/异步方法来发送请求并获取服务器返回数据

//同步方法:Response response  = client.newcall(request).execute();//异步方法:client.newCall(request).enqueue(callback); //callback即为返回数据载体//完整代码(同步)： private void sendRequestWithOkHttp(){        new Thread(new Runnable() {            @Override            public void run() {                try{                    OkHttpClient client = new OkHttpClient();                    Request request = new Request.Builder()                            .url("网址")                            .build();                    Response response = client.newCall(request).execute();                    String responseData = response.body().string();                }                catch (Exception e){                    e.printStackTrace();                }            }        }).start();    }//完整代码(异步)：private void sendRequestWithOkHttp(okhttp3.Callback callback){        new Thread(new Runnable() {            @Override            public void run() {                try{                    OkHttpClient client = new OkHttpClient();                    Request request = new Request.Builder()                            .url("网址")                            .build();                    client.newCall(request).enqueue(callback);                }                catch (Exception e){                    e.printStackTrace();                }            }        }).start();    }//在调用的时候要重写两个方法：sendRequestWithOkHttp( new Callback() {            @Override            public void onFailure(Call call, IOException e) {                runOnUiThread(new Runnable() {                    @Override                    public void run() {                       //do                });            }      @Override      public void onResponse(Call call, Response response)       throws IOException {             final String responseText =zresponse.body().string();                                      //返回的json数据            }        })

阅读全文

0 0