Question

Suppose I have a menu option called ‘Display’ and my application com.android.display is performing the task of displaying the picture.Now if the apk com.android.display is not installed on the device, the menu option ‘display’ comes but its of no use.So I want that only when this apk is installed on device then only ‘display’ menu option comes.
Is there any way to achieve this on Android OS?

Answer 1

This particular solution is on Android How To on Google Sites

If you ever need to know if a particular app is installed on the
user’s device, you can use the PackageManager. From a Context class
(e.g. an Activity or a Service) you can call getPackageManager().
This gives you a variety of methods, one of which is getPackageInfo().
Below is a method you might use. You might call it like this:

isAppInstalled("com.simexusa.campusmaps_full");

private boolean isAppInstalled(String uri) {
   PackageManager pm = getPackageManager();
   boolean installed = false;
   try {
      pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
      installed = true;
   } catch (PackageManager.NameNotFoundException e) {
      installed = false;
   }
   return installed;
}