retrieving apps from trash can

If you uninstalled the app then you can't retrieve it unless you download it again from the market. But all your saved data will be lost.
 
If by "trash can" you mean removed from the home screen then:
  1. find the app in your apps
  2. long press on the app
  3. select "Add to Home"
 

Trending Posts

Forum statistics

Threads
957,358
Messages
6,972,595
Members
3,163,777
Latest member
DonUAE