android加载网络图片之前获取图片信息

URL m_url = new URL(url);HttpURLConnection con = (HttpURLConnection) m_url.openConnection();InputStream in = con.getInputStream();BitmapFactory.Options options = new BitmapFactory.Options();options.inJustDecodeBounds = true;BitmapFactory.decodeStream(in, null, options);int height = options.outHeight;int width = options.outWidth;String s = "高度是" + height + "宽度是" + width;