如何包含一个大型GridView并仍能滚动？(How to contain a large GridView and still able to scroll?)

 我使用Wireshark来查看浏览器实际发送的内容。 它接缝（在其他内容之外），在Content-Disposition（例如“Content-Type：application / pdf \ r \ n \ r \ n”之后）发送另一个Content-Type标头（在“MIME Multipart Media Encapsulation”部分中） \ n“。所以，在文件上传教程中，在以下行之后： 
 
dos.writeBytes("Content-Disposition: form-data;name=\"uploadedfile\";" + "filename=\"" + fileName + "\"" + lineEnd);
 
 我刚补充说： 
 
String mimeType = URLConnection.guessContentTypeFromName(file.getName());
dos.writeBytes("Content-Type: " + mimeType + lineEnd);
 
 现在它接缝上传过程工作正常。 
 
 当然，对于许多扩展，mimeType可能为null，因此应根据需要进行检查。 

I used Wireshark to view what was the browser actually sending. It seams that (among other stuff), another Content-Type header is sent (in the "MIME Multipart Media Encapsulation" section), after Content-Disposition (for ex. "Content-Type: application/pdf\r\n\r\n". So, in the file upload tutorial, after the following line: 
 
dos.writeBytes("Content-Disposition: form-data;name=\"uploadedfile\";" + "filename=\"" + fileName + "\"" + lineEnd);
 
I just added:
 
String mimeType = URLConnection.guessContentTypeFromName(file.getName());
dos.writeBytes("Content-Type: " + mimeType + lineEnd);
 
Now it seams the uploading process is working fine.
 
Of course, for many extensions, mimeType will probably be null, so it should be checked, according to needs.