How can I display all images - those included with the app and on the sdcard?

I want the user to be able to select from ALL images - those included with my app aswell as any they may have on their sdcard. For example, I have a .jpg file called cat.jpg in the data/com.mypackage/files folder, but it will not s开发者_C百科how in the list of images. This is the code I used, but it only displays images on the sdcard:

  // Open up a gallery browser
  Intent intent = new Intent();
  intent.setType("image/*");
  intent.setAction(Intent.ACTION_GET_CONTENT);
  startActivityForResult(Intent.createChooser(intent, "Select Picture"),1);

I know that I could have two screens, one showing my images and another showing those from the sdcard, but I would rather have all of pictures in one gallery list.

Any ideas? Thank you.

update: Since no one has responsed, then maybe this type of task just can't be done. I cannot find any documentation one way or the other. If someone knows where the gallery view gets its data, please let me know (docs just says images - not the source of them). Or if it is not possible to combine all images from both the phone and the sdcard in one display, I would appreciate that response also.

Thanks again.