Option to upload a file- as it is possible to upload a photo

When I call the function getPhotoLibrary:

getPhotoLibrary: function (e) {
                navigator.camera.getPicture(
                 uploadPhoto,
                 function (message) {
                     alert("Failed to get a picture. Please select one.");
                 }, {
                     quality: 20,
                     destinationType: navigator.camera.DestinationType.FILE_URI,
                     sourceType: navigator.camera.PictureSourceType.PHOTOLIBRARY
                 });
            },

The gallery of the photos in my phone is opened and I can choose a photo.

I want to be able to see also the files in my phone- and to be able to choose a file!

How can I do it?

Thanks a lot!

Shira