fix bugs in loading pictures. bug still have bugs(criticlly it's not a
bug. it's one function).
add image resource to view(gone)
refactor listeners and add onscrolllistener (doesn't work now)
scroll listener trigged, but not as expected.
change logger name
uops, this is a big change. turn back to use primary gridview to make
use of scroll listener. it will help to listen and recycle bitmap
resources.
add notification to tell users it's reloading photos
a big change: add my own adapter to fit camera or photos.
upgrade to turn into my own adapter to match camera and photo view.