How to upload only images in GWT fileUpload

问题

I need to upload one image file into my application. I am using GWT FileUpload compontent to upload the File. But when I use FileUpload, the FileUploadDialog displayed All files.. I need to set it only for image files . How can I set filter for that?

Thanks,

Ajinkya.

回答1:

HTML <input> has accept Attribute http://www.w3schools.com/tags/att_input_accept.asp

do like this on GWT

FileUpload upload=new FileUpload();
upload.getElement().setAttribute("accept", "image/*");

来源：https://stackoverflow.com/questions/21771909/how-to-upload-only-images-in-gwt-fileupload