How to detect if Google Play is installed? (Not Market)

Question

Whether the app installed is called Google Play or Market, the package name is the same com.android.vending.

I need to be able to detect whether the app

Answer 1

In my App I check possibility to open play store before fire it like:

    public static boolean isResolveActivity(Intent intent) {
            return App.getInstance().getPackageManager().resolveActivity(intent, PackageManager.GET_RESOLVED_FILTER) != null;
        }

   public void isResolveActivity(String appPackage) {
    Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=" + appPackage));

      if(isResolveActivity(intent)){
      ...open intent
      }
  }