How to get a list of installed android applications and pick one to run

Question

I asked a similar question to this earlier this week but I\'m still not understanding how to get a list of all installed applications and then pick one to run.

I\'v

Answer 1

private static boolean isThisASystemPackage(Context context, PackageInfo  packageInfo ) {
        try {
            PackageInfo sys = context.getPackageManager().getPackageInfo("android", PackageManager.GET_SIGNATURES);
            return (packageInfo != null && packageInfo.signatures != null &&
                    sys.signatures[0].equals(packageInfo.signatures[0]));
        } catch (NameNotFoundException e) {
            return false;
        }
    }