okhttp 简单用法

1.gradle 依赖 github 中查找最新的

2.MyApplication oncreate 中：

 @Override
    public void onCreate () {
        super.onCreate();
        myApplication = this;
       mHttpClient = new OkHttpClient();
    }

2.封装执行方法

public Response excuteHttp(String url){
        try {
            Request build = new Request.Builder().url(url).build();
            Response execute = mHttpClient.newCall(build).execute();
            return execute;
        } catch (IOException e) {
            return null;
            // e.printStackTrace();

        }

    }

3.子线程中调用：

private void downloadFile () {
        final String url = "http://192.168.1.151:8080/pic/beautiful4.jpg";
        new Thread(new Runnable() {
            @Override
            public void run () {
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                MyApplication instance = MyApplication.getInstance();
                Response response = instance.excuteHttp(url);
                if(response==null){
                    Log.e(TAG,"OKHTTP RESPONSE 是null");
                }else{
                    ResponseBody body = response.body();
                    InputStream inputStream = body.byteStream();
                    final Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
                    Log.e(TAG,"OKHTTP RESPONSE 不为null");
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run () {
                            mImageView.setImageBitmap(bitmap);
                        }
                    });

                }
            }
        }).start();
    }