or this one (API Level 9 upwards!):
long installed = context
.getPackageManager()
.getPackageInfo(context.getPackageName(), 0)
.firstInstallTime
;
or this one (API Level 9 upwards!):
long installed = context
.getPackageManager()
.getPackageInfo(context.getPackageName(), 0)
.firstInstallTime
;