解析图片

public static Bitmap getNetBitmap(String urlString) {

        try {
            //用URL封装链接地址;
            URL url = new URL(urlString);
            //用url打开链接
            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
            //联网的状态码
            int responseCode = urlConnection.getResponseCode();
            if(responseCode ==200){
                //链接上获取输入流
                InputStream inputStream = urlConnection.getInputStream();
                //把流直接转换成bitmap(系统提供的BitmapFactory)
                Bitmap bitmap = BitmapFactory.decodeStream(inputStream);//BitmapFactory是个工具类,系统提供的
                return bitmap;
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }