Is it possible to to start Gallery in such a way so both pictures and videos are shown?
Thanks
UPDATE 2021
FINALLY a solution working for Android 9.
This piece of code only open image apps, and you can select both images and videos. I tried a bunch of different combinations and this exact code will make it work.
libraryIntent.setType("video/*, image/*");
String[] mimetypes = {"image/*", "video/*"};
libraryIntent.putExtra(Intent.EXTRA_MIME_TYPES, mimetypes);