okhttp使用

 OkHttpClient client = new OkHttpClient();    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) {            Toast.makeText(getApplicationContext(), "请检查网络", Toast.LENGTH_SHORT).show();        }        @Override        public void onResponse(Call call, Response response) throws IOException {            String result = response.body().string();            Log.e("leasemachdeta", "url= " + url);            leaseMachDetailBean = parseJson(result);            mHandler.sendEmptyMessage(0);        }    });}