Android :: Application With Debug Or Release Mode

I'm trying to figure out a way to programmatically determine if my build was built in debug mode vs. release mode. I'd like to hide some items in my settings screen if it's release. When I build my app in Eclipse I'm building by default in Debug mode. However, when I build the app using the command line, I build it in release mode and sign the app using the jarsigner tool.

I've tried using:
PackageInfo appInfo = manager.getPackageInfo("com.adobe.psmobile", PackageManager.GET_SIGNATURES);
to test if
appInfo.signatures[0].toCharsString()
matches my debug signature and that didn't seem to work.

I'm now trying to see if I can introspect the app's KeyStore, to match the default debug alias described here:
http://developer.android.com/guide/publishing/app-signing.html of "androiddebugkey"
but I haven't figured out how to retrieve the app's KeyStore yet.