Question

Possible Duplicate:
Android – check for presence of another app

How to check if an application is installed on the smartphone?
For my application, I need to know if Facebook and Twitter are installed on the smartphone.To see if I can use them.

Answer 1

Use this

PackageManager pm = getPackageManager();
boolean s = false;
try{ 
     pm.getPackageInfo("app package",0); 
     s = true; 
} catch (Exception e ) { s= false; }

you can find app package on google play site (in page url)