OKHttp学习步骤

1、得到okHttpClict对象。OkHttpClient okHttpClient = new OkHttpClient();2、构造requestRequest request = new Request.Builder()        .get()        .url(mBaseUrl + "login?username=shuaige&password=521")        .build();3、将request封装成CallCall call = okHttpClient.newCall(request);4、执行Callcall.enqueue(new Callback() {    @Override    public void onFailure(Call call, IOException e) {        L.e("onFailure" + e.getMessage());        e.printStackTrace();    }    @Override    public void onResponse(Call call, Response response) throws IOException {        L.e("onResponse:");        final String res = response.body().string();        L.e(res);        runOnUiThread(new Runnable() {            @Override            public void run() {                tv.setText(res);            }        });    }});